Power Management

S8340

Seiko Instruments Inc

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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www.sii-ic.com STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER © SII Semiconductor Corporation, 1999-2010 Rev.4.0_01 The S-8340/8341 Series is a CMOS step-up sw itching regulator controller which main ly consists of a reference voltage source, oscillation circuit, error amplifier, phase compensati on circuit, PWM control circuit (S-8340 Series), and PWM/PFM switching control circuit (S-8341 Series). Since the oscillation frequency is a high 300 kHz or 600 kHz, with the addition of a sma ll external part, the S-8340/8341 Series functions as a highly efficient step-up switching regulator with a high output current. The speed of the output stage is enhanced so that the N-channel power MOS with a low on-resistance can be switched quickly. The S-8340 Series realizes low ripple, high efficiency, and excell ent transient characteristics thanks to a PMW control circuit capable of varying the duty ratio linearly from 0 to 82%, optimized error amplifier, and phase compensation circuit. The S-8341 Series contains a PWM/PFM switch ing control circuit so that it operates using PWM cont rol with a duty ratio of 27% or higher and using PFM control with a duty ratio of lower than 27% to ensure high efficiency in all load ranges. These S-8340/8341 Series serve as ideal main power supply uni ts for portable devices when coupled with the 8-Pin TSSOP package and high oscillation frequencies.  Features

Oscillation frequency : 600 kHz (A and B types), 300 kHz (C and D types).
Output voltage : Selectable in 0.1 V steps between 2.5 to 6.0 V (output voltage fixed output type)
Output voltage accuracy : ±2.0%
Output voltage external setting (FB) type available. FB terminal voltage (V FB) 1.0 V
External parts : Coil, diode, capacit ors (3), transistor, and resistor only
Duty ratio : 0 to 82% (typ.) PWM control (S-8340 Series) 27 to 82% (typ.) PWM/PFM switching control (S-8341 Series A and B types) 21 to 82% (typ.) PWM/PFM switching control (S-8341 Series C and D types)
Low-voltage operation: Osc illation guaranteed to start when V DD = 0.9 V
Built-in current limit circuit: Can be set with an external resistor (RSENSE)
Soft-start function set by an external capacitor (C SS)
Shutdown function
Lead-free, Sn 100%, halogen-free *1 *1. Refer to “ Product Name Structure” for details.  Applications
Power supplies for portable equipments such as PDAs, electronic notebooks, and cellular phones
Power supplies for audio equipments such as portable CD players, portable MD players, and headphone stereos
Main or local power supplies for notebook PCs and peripherals
Constant voltage power supplies for ca meras, VCRs, and communication devices  Package
8-Pin TSSOP

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series  Product Name Structure The control method, product type, and output voltage values for the S- 8340/8341 Series can be selected depending on usage. Refer to “ 1. Product Name ” for the definition of the product name, “ 2. Package ” regarding the package drawings and “3. Product Name List ” for the full product names. 1. Product Name S-834 x x xx A FT – T2 – x Environmental code U : Lead-free (Sn 100%), halogen-free G : Lead-free (for details, please contact our sales office) IC direction in tape specifications Package name (abbreviation) FT : 8-Pin TSSOP Output voltage 25 to 60 (E.g., when the output voltage is 2.5 V, it is expressed as 25.) Product type A : Output voltage fixed output type, f OSC = 600 kHz B : Output voltage external setting type, fOSC = 600 kHz C : Output voltage fixed output type, fOSC = 300 kHz D : Output voltage external setting type, fOSC = 300 kHz Control method 0 : PWM control 1 : PWM/PFM switching control *1. Refer to the tape drawing. 2. Package Package Name Drawing Code Package Tape Reel 8-Pin TSSOP Environmental code = G FT008-A-P- SD FT008-E-C-SD FT008-E-R-SD Environmental code = U FT008-A-P- SD FT008-E-C-SD FT008-E-R-S1

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 3. Product Name List (1) Output Voltage Fixed Output Type Table 1 Output Voltage (V) S-8340 Series A Type fOSC = 600 kHz PWM Control S-8341 Series A Type fOSC = 600 kHz PWM/PFM Switching Control S-8340 Series C Type fOSC = 300 kHz PWM Control S-8341 Series C Type fOSC = 300 kHz PWM/PFM Switching Control

2.5 V S-8340A25AFT-T2-x S-8341A25AFT-T2- x S-8340C25AFT-T2-x S-8341C25AFT-T2-x

3.0 V S-8340A30AFT-T2-x S-8341A30AFT-T2- x S-8340C30AFT-T2-x S-8341C30AFT-T2-x

3.3 V S-8340A33AFT-T2-x S-8341A33AFT-T2- x S-8340C33AFT-T2-x S-8341C33AFT-T2-x

3.4 V S-8340A34AFT-T2-x − − −

3.5 V S-8340A35AFT-T2-x − − −

5.0 V S-8340A50AFT-T2-x S-8341A50AFT-T2- x S-8340C50AFT-T2-x S-8341C50AFT-T2-x

5.1 V S-8340A51AFT-T2-x − − S-8341C51AFT-T2-x

5.6 V S-8340A56AFT-T2-x − − −

6.0 V S-8340A60AFT-T2-x − S-8340C60AFT-T2-x −

Remark 1. Contact the SII Semiconductor Corporation marketi ng department for products with an output voltage other than those specified above. 2. x: G or U 3. Please select products of environmental code = U for Sn 100%, halogen-free products. (2) Output Voltage External Setting Type Table 2 Output Voltage (V) S-8340 Series B Type fOSC = 600 kHz PWM Control S-8341 Series B Type fOSC = 600 kHz PWM/PFM Switching Control S-8340 Series D Type fOSC = 300 kHz PWM Control S-8341 Series D Type fOSC = 300 kHz PWM/PFM Switching Control External setting S-8340B00AFT-T2-x S-8341B00A FT-T2-x S-8340D00AFT-T2-x S-8341D00AFT-T2-x Remark 1. x: G or U 2. Please select products of environmental code = U for Sn 100%, halogen-free products.

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series  Pin Configurations Table 3 8-Pin TSSOP Top view Figure 3 Pin No. Symbol Pin Description

1 VSS GND pin

2 CVREF Reference voltage source pass capacitor connection

3 CSS Soft-start capacitor connection pin

4 ON/OFF

“H” : Normal operation (step-up operating) “L” : Entire circuit stopped (step-up stopped)

5 VDD IC power supply pin

6 VOUT

(FB) Output voltage fixed output type : Output voltage monitoring pin [Output voltage external setting type : Feedback pin]

7 EXT External transistor connection pin

8 SENSE Current limit detection pin

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01  Absolute Maximum Ratings Table 4 (Ta = 25°C unless otherwise specified) Parameter Symbol Absolu te Maximum Rating Unit VDD pin voltage V DD V SS − 0.3 to VSS + 12 V VOUT pin voltage V OUT V SS − 0.3 to VSS + 12 V FB pin voltage V FB V SS − 0.3 to VSS + 12 V CVREF pin voltage V CVREF V SS − 0.3 to VDD + 0.3 V CSS pin voltage V CSS V SS − 0.3 to VDD + 0.3 V ON/OFF pin voltage V ON/OFF V SS − 0.3 to VSS + 12 V SENSE pin voltage V SENSE V SS − 0.3 to VSS + 12 V EXT pin voltage V EXT V SS − 0.3 to VDD + 0.3 V EXT pin current I EXT ±100 mA Power dissipation P D 300 (When not mounted on board) mW 700*1 mW Operating ambient temperature T dpr −40 to +85 °C Storage temperature T stg −40 to +125 °C *1. When mounted on board [Mounted board] (1) Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Board name : JEDEC STANDARD51-7 Caution The absolute maximum ra tings are rated values exceeding whic h the product could suffer physical damage. These values must therefor e not be exceeded under any conditions. (1) When mounted on board (2) When not mounted on board 0 50 100 150 600 400 200 Power dissipation PD (mW) Ambient temperature Ta (°C) 500 300 100 700 800 0 50 100 150 300 200 100 Power dissipation PD (mW) Ambient temperature Ta (°C) 400 Figure 4 Power Dissipation of Packages

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series  Electrical Characteristics (1) 600 kHz, Output Voltage Fixed Type (A Type) Table 5 (Ta = 25°C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Measurement Circuit Output voltage*1 V OUT(E) VIN = VOUT(S) × 0.6, IOUT = VOUT(S)/50 Ω VOUT(S) × 0.98 VOUT(S) VOUT(S) × 1.02 V 1 Input voltage V IN − − − 6 V 1 Oscillation start voltage V ST No external parts. The voltage is applied to VOUT. − − 0.9 V 2 Current consumption 1 I SS1 V OUT = VOUT(S) × 0.95, EXT pin open S-834xA25 − 34 − 350 640 μA 2 S-834xA35 − 44 − 460 810 μA 2 S-834xA45 − 54 − 630 1060 μA 2 S-834xA55 − 60 − 810 1250 μA 2 Current consumption 2 I SS2 V OUT = VOUT(S) + 0.5 V, EXT pin open − 180 300 μA 2 Current consumption at shutdown ISSS VOUT = VOUT(S) × 0.95, VON/OFF = 0 V − − 3.0 μA 2 EXT pin output current I EXTH V EXT = VOUT(E) − 0.2 V S-834xA25 − 34 −13 −24 − mA − S-834xA35 − 44 −17 −30 − mA − S-834xA45 − 54 −21 −34 − mA − S-834xA55 − 60 −23 −37 − mA − IEXTL V EXT = 0.2 V S-834xA25 − 34 32 56 − mA − S-834xA35 − 44 42 69 − mA − S-834xA45 − 54 50 78 − mA − S-834xA55 − 60 56 85 − mA − Line regulation ΔVOUT1 VIN = VOUT(S) × 0.4 to VOUT(S) × 0.6 IOUT = VOUT(S)/50 Ω − VOUT(S) × 0.5% VOUT(S) × 1% V 1 Load regulation ΔVOUT2 V IN = VOUT(S) × 0.6, 10 μA ≤ IOUT ≤ VOUT(S)/40 Ω − VOUT(S) × 0.5% VOUT(S) × 1% V 1 Output voltage temperature coefficient*2 ΔVOUT ΔTa•VOUT VIN = VOUT(S) × 0.6, IOUT = VOUT(S)/50 Ω, Ta = −40 to +85°C − ±100 − ppm/°C1 Oscillation frequency f OSC VOUT = VOUT(S) × 0.95 Measure waveform at the EXT pin 510 600 690 kHz 2 Maximum duty ratio MaxDuty VIN = VOUT(S) × 0.95 Measure waveform at the EXT pin 73 82 89 % 2 PWM/PFM switching duty ratio (S-8341 Series A type) PFMDuty V IN = VOUT(E) − 0.1 V, under no load 19 27 35 % 1 Current limit detection voltage VSENSE VOUT = VOUT(S) × 0.95 Judge oscillation at the EXT pin or oscillation stop at “L” 90 120 150 mV 2 ON/OFF pin input voltage V SH V OUT = VOUT(S) × 0.95 Judge oscillation at the EXT pin. 0.8 − − V 2 VSL V OUT = VOUT(S) × 0.95 Judge oscillation stop at the EXT pin. − − 0.3 V 2 ON/OFF pin input leakage current ISH V OUT = 6 V, VON/OFF = 6 V −0.1 − 0.1 μA 2 ISL V OUT = 6 V, VON/OFF = 0 V −0.1 − 0.1 μA 2 Soft-start time t SS V IN = VOUT(S) × 0.6, CSS = 4700 pF, IOUT = VOUT(S)/50 Ω S-8340Axx 3.0 6.0 14.0 ms 1 Measure time until oscillation occurs at the EXT pin. S-8341Axx 3.0 8.0 14.0 ms 1 Efficiency EFFI V IN = VOUT(S) × 0.6, IOUT =VOUT(S)/50 Ω S-834xA25 − 34 − 83 − % 1 S-834xA35 − 44 − 85 − % 1 S-834xA45 − 54 − 87 − % 1 S-834xA55 − 60 − 87 − % 1

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 External parts Coil : Sumida Corporation CD54 (10 μH) Diode : Matsushita Electronic Industrial Co., Ltd. MA735 (Schottky type) Capacitor : Nichicon Co rporation F93 (16 V, 47 μF, tantalum type) Transistor : Sanyo Electric Co., Ltd. 2SD1628G Base resistor (R b) : 1.0 k Ω Base capacitor (C b) : 2200 pF (ceramic type) C VREF : 0.01 μF C SS : 4700 pF The VDD pin is connected to the VOUT pin. The ON/OFF pin is connected to the VOUT pin unless otherwise specified. Connect the SENSE pin to the VSS pin. *1. VOUT(S) : Set output voltage value V OUT(E) : Actual output voltage value : Output voltage value when IOUT = VOUT(S)/50 Ω and VIN = VOUT(S) × 0.6. *2. The change of output volt age with temperature [mV/°C] is calculated from the following formula. ΔVOUT ΔTa • VOUT [mV/°C] ΔVOUT ΔTa VOUT(S) [V] = × [ppm/°C] ÷ 1000 (Change of output voltage (Set output voltage (Output voltage temperature with temperature) value) coefficient) Caution The S-8340/8341 Series steps up from V DD = 0.9 V. However, 2.5 V or more for V DD is recommended to stabilize the output voltage and oscillation frequency. If V DD is taken from V IN or other power sources, instead of VOUT, VDD should be 2.5 V or more. However, if V DD is not taken from VOUT, note that the output voltage accuracy of ±2.0% is not guaranteed due to dependency of output voltage on V DD. In particular, accuracy of output voltage is degraded significantly when the V DD voltage is 6.0 V or more. Therefore, do not use this IC when the V DD voltage is 6.0 V or more. If V DD of 2.5 V or more is applied, increase power supply so that VDD becomes 2.5 V or more within the soft-start time (3.0 ms).

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (2) 600 kHz, Output Voltage External Setting Type (B Type) Table 6 (Ta = 25°C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Measurement Circuit Output voltage*1 V OUT(E) V IN = 2.4 V, IOUT = 80 mA 3.920 4.000 4.080 V 3 FB pin voltage V FB V IN = 2.4 V, IOUT = 80 mA 0.980 1.000 1.020 V 3 Input voltage V IN − − − 6 V 3 Oscillation start voltage V ST2 No external parts. The voltage is applied to VDD. − − 0.9 V 4 Current consumption 1 I SS1 V OUT = 3.8 V − 460 740 μA 4 Current consumption 2 I SS2 V OUT = 4.5 V − 180 300 μA 4 Current consumption at shutdown ISSS V OUT = 3.8 V, VON/OFF = 0 V − − 3.0 μA 4 EXT pin output current I EXTH V EXT = VOUT(E) − 0.2 V −19 −30 − mA − IEXTL V EXT = 0.2 V 46 69 − mA − Line regulation ΔVOUT1 1.6 V ≤ VIN ≤ 2.4 V, IOUT = 80 mA − 20 40 mV 3 Load regulation ΔVOUT2 V IN = 2.4 V, 10 μA ≤ IOUT ≤ 100 mA − 20 40 mV 3 Output voltage temperature coefficient*2 ΔVOUT ΔTa•VOUT VIN = 2.4 V, IOUT = 80 mA, Ta = −40 to +85°C − ±100 − ppm/°C 3 Oscillation frequency f OSC V OUT = 3.8 V, measure waveform at the EXT pin 510 600 690 kHz 4 Maximum duty ratio MaxDuty V IN = 3.8 V, measure waveform at the EXT pin 73 82 89 % 4 PWM/PFM switching duty ratio (S-8341 Series B type) PFMDuty V IN = VOUT(E) − 0.1 V, under no load 19 27 35 % 3 Current limit detection voltage VSENSE VOUT = 3.8 V Judge oscillation at the EXT pin or oscillation stop at “L” 90 120 150 mV 4 FB pin input current I FB V OUT = 6 V, VFB = 1.5 V −50 − 50 nA 4 ON/OFF pin input voltage V SH V OUT = 3.8 V Judge oscillation at the EXT pin. 0.8 − − V 4 VSL V OUT = 3.8 V Judge oscillation stop at the EXT pin. − − 0.3 V 4 ON/OFF pin input leakage current ISH V OUT = 6 V, VON/OFF = 6 V −0.1 − 0.1 μA 4 ISL V OUT = 6 V, VON/OFF = 0 V −0.1 − 0.1 μA 4 Soft-start time t SS VIN = 2.4 V, CSS = 4700 pF, IOUT = 80 mA, S-8340B00 3.0 6.0 14.0 ms 3 Measure time until oscillation occurs at the EXT pin. S-8341B00 3.0 8.0 14.0 ms 3 Efficiency EFFI V IN = 2.4 V, IOUT = 80 mA − 85 − % 3

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 External parts Coil : Sumida Corporation CD54 (10 μH) Diode : Matsushita Electronic Industrial Co., Ltd. MA735 (Schottky type) Capacitor : Nichicon Co rporation F93 (16 V, 47 μF, tantalum type) Transistor : Sanyo Electric Co., Ltd. 2SD1628G Base resistor (R b) : 1.0 k Ω Base capacitor (C b) : 2200 pF (ceramic type) C VREF : 0.01 μF C SS : 4700 pF R FB1 : 300 k Ω R FB2 : 100 k Ω C FB : 50 pF The ON/OFF pin is connected to the VOUT pin unless otherwise specified. Connect the SENSE pin to the VSS pin. *1. VOUT(E) : Actual output voltage value : Output voltage value when IOUT = 80 mA and VIN = 2.4 V is applied. The Typ. value (set output voltage value) is 1 + [V] *2. The change of output volt age with temperature [mV/°C] is calculated from the following formula. However, the temperature change rates for RFB1 and RFB2 are assumed to be the same. = (1 + ) ΔVOUT ΔTa • VOUT ΔVOUT ΔTa RFB1 RFB2 [mV/°C] × [ppm/°C] ÷ 1000 (Change of output voltage (Set output (Output voltage temperature with temperature) voltage value) coefficient) Caution The S-8340/8341 Series steps up from V DD = 0.9 V. However, 2.5 V or more for V DD is recommended to stabilize the output voltage and oscillation frequency. If V DD is taken from V IN or other power sources, instead of V OUT, VDD should be 2.5 V or more. However, if V DD is other than 4.0 V, note that the output voltage accuracy of ±2.0% is not guaranteed due to dependency of output voltage on V DD. In particular, accuracy of output voltage is degraded significantly when the V DD voltage is 6.0 V or more. Therefore, do not use this IC when the V DD voltage is 6.0 V or more. If V DD of 2.5 V or more is applied, increase power supply so that VDD becomes 2.5 V or more within the soft-start time (3.0 ms). 300 kΩ 100 kΩ

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (3) 300 kHz, Output Voltage Fixed Type (C Type) Table 7 (Ta = 25°C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Measurement Circuit Output voltage*1 V OUT(E) VIN = VOUT(S) × 0.6, IOUT = VOUT(S)/50 Ω VOUT(S) × 0.98 VOUT(S) VOUT(S) × 1.02 V 1 Input voltage V IN − − − 6 V 1 Oscillation start voltage V ST No external parts. The voltage is applied to VOUT. − − 0.9 V 2 Current consumption 1 I SS1 V OUT = VOUT(S) × 0.95, EXT pin open S-834xC25 − 34 − 210 430 μA 2 S-834xC35 − 44 − 270 520 μA 2 S-834xC45 − 54 − 350 650 μA 2 S-834xC55 − 60 − 440 740 μA 2 Current consumption 2 I SS2 V OUT = VOUT(S) + 0.5 V, EXT pin open − 110 185 μA 2 Current consumption at shutdown ISSS VOUT = VOUT(S) × 0.95, VON/OFF = 0 V − − 3.0 μA 2 EXT pin output current I EXTH V EXT = VOUT(E) − 0.2 V S-834xC25 − 34 −13 −24 − mA − S-834xC35 − 44 −17 −30 − mA − S-834xC45 − 54 −21 −34 − mA − S-834xC55 − 60 −23 −37 − mA − IEXTL V EXT = 0.2 V S-834xC25 − 34 32 56 − mA − S-834xC35 − 44 42 69 − mA − S-834xC45 − 54 50 78 − mA − S-834xC55 − 60 56 85 − mA − Line regulation ΔVOUT1 VIN = VOUT(S) × 0.4 to VOUT(S) × 0.6 IOUT = VOUT(S)/50 Ω − VOUT(S) × 0.5% VOUT(S) × 1% V 1 Load regulation ΔVOUT2 V IN = VOUT(S) × 0.6, 10 μA ≤ IOUT ≤ VOUT(S)/40 Ω − VOUT(S) × 0.5% VOUT(S) × 1% V 1 Output voltage temperature coefficient*2 ΔVOUT ΔTa•VOUT VIN = VOUT(S) × 0.6, IOUT = VOUT(S)/50 Ω Ta = −40 to +85°C − ±100 − ppm/°C1 Oscillation frequency f OSC VOUT = VOUT(S) × 0.95 Measure waveform at the EXT pin 255 300 345 kHz 2 Maximum duty ratio MaxDuty VIN = VOUT(S) × 0.95 Measure waveform at the EXT pin 73 82 89 % 2 PWM/PFM switching duty ratio (S-8341 Series C type) PFMDuty V IN = VOUT(E) − 0.1 V, under no load 15 21 31 % 1 Current limit detection voltage VSENSE VOUT = VOUT(S) × 0.95 Judge oscillation at the EXT pin or oscillation stop at “L” 90 120 150 mV 2 ON/OFF pin input voltage V SH V OUT = VOUT(S) × 0.95 Judge oscillation at the EXT pin. 0.8 − − V 2 VSL V OUT = VOUT(S) × 0.95 Judge oscillation stop at the EXT pin. − − 0.3 V 2 ON/OFF pin input leakage current ISH V OUT = 6 V, VON/OFF = 6 V −0.1 − 0.1 μA 2 ISL V OUT = 6 V, VON/OFF = 0 V −0.1 − 0.1 μA 2 Soft-start time t SS V IN = VOUT(S) × 0.6, CSS = 4700 pF, IOUT = VOUT(S)/50 Ω, S-8340Cxx 6.0 14.3 28.0 ms 1 Measure time until oscillation occurs at EXT pin. S-8341Cxx 6.0 17.2 28.0 ms 1 Efficiency EFFI V IN = VOUT(S) × 0.6, S-834xC25 − 34 − 83 − % 1 IOUT = VOUT(S)/50 Ω S-834xC35 − 44 − 85 − % 1 S-834xC45 − 54 − 87 − % 1 S-834xC55 − 60 − 87 − % 1

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (4) 300 kHz, Output Voltage External Setting Type (D Type) Table 8 (Ta = 25°C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Measurement Circuit Output voltage*1 V OUT(E) V IN = 2.4 V, IOUT = 80 mA 3.920 4.000 4.080 V 3 FB pin voltage V FB V IN = 2.4 V, IOUT = 80 mA 0.980 1.000 1.020 V 3 Input voltage V IN − − − 6 V 3 Oscillation start voltage V ST2 No external parts. The voltage is applied to VDD. − − 0.9 V 4 Current consumption 1 I SS1 V OUT = 3.8 V − 255 460 μA 4 Current consumption 2 I SS2 V OUT = 4.5 V − 110 185 μA 4 Current consumption at shutdown ISSS V OUT = 3.8 V, VON/OFF = 0 V − − 3.0 μA 4 EXT pin output current I EXTH V EXT = VOUT(E) − 0.2 V −19 −30 − mA − IEXTL V EXT = 0.2 V 46 69 − mA − Line regulation ΔVOUT1 1.6 V ≤ VIN ≤ 2.4 V, IOUT = 80 mA − 20 40 mV 3 Load regulation ΔVOUT2 V IN = 2.4 V, 10 μA ≤ IOUT ≤ 100 mA − 20 40 mV 3 Output voltage temperature coefficient*2 ΔVOUT ΔTa•VOUT VIN = 2.4 V, IOUT = 80 mA, Ta = −40 to +85°C − ±100 − ppm/°C 3 Oscillation frequency f OSC V OUT = 3.8 V, Measure waveform at the EXT pin 255 300 345 kHz 4 Maximum duty ratio MaxDuty V IN = 3.8 V, Measure waveform at the EXT pin 73 82 89 % 4 PWM/PFM switching duty ratio (S-8341 Series D type) PFMDuty V IN = VOUT(E) − 0.1 V, Under no load 15 21 31 % 3 Current limit detection voltage VSENSE VOUT = 3.8 V Judge oscillation at the EXT pin or oscillation stop at “L” 90 120 150 mV 4 FB pin input current I FB V OUT = 6 V, VFB = 1.5 V −50 − 50 nA 4 ON/OFF pin input voltage V SH V OUT = 3.8 V Judge oscillation at the EXT pin. 0.8 − − V 4 VSL V OUT = 3.8 V Judge oscillation stop at the EXT pin. − − 0.3 V 4 ON/OFF pin input leakage current ISH V OUT = 6 V, VON/OFF = 6 V −0.1 − 0.1 μA 4 ISL V OUT = 6 V, VON/OFF = 0 V −0.1 − 0.1 μA 4 Soft-start time t SS V IN = 2.4 V, CSS = 4700 pF, S-8340D00 6.0 14.3 28.0 ms 3 IOUT = 80 mA, Measure time until oscillation occurs at the EXT pin. S-8341D00 6.0 17.2 28.0 ms 3 Efficiency EFFI V IN = 2.4 V, I OUT = 80 mA − 85 − % 3

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 External parts Coil : Sumida Corporation CD54 (10 μH) Diode : Matsushita Electronic Industrial Co., Ltd. MA735 (Schottky type) Capacitor : Nichicon Co rporation F93 (16 V, 47 μF, tantalum type) Transistor : Sanyo Electric Co., Ltd. 2SD1628G Base resistor (R b) : 1.0 k Ω Base capacitor (C b) : 2200 pF (ceramic type) C VREF : 0.01 μF C SS : 4700 pF R FB1 : 300 k Ω R FB2 : 100 k Ω C FB : 50 pF The ON/OFF pin is connected to the VOUT pin unless otherwise specified. Connect the SENSE pin to the VSS pin. *1. VOUT(E) : Actual output voltage value : Output voltage value when IOUT = 80 mA and VIN = 2.4 V is applied. The Typ. value (set output voltage value) is 1 + [V] *2. The change of output volt age with temperature [mV/°C] is calculated from the following formula. However, the temperature change rates for RFB1 and RFB2 are assumed to be the same. = (1 + ) ΔVOUT ΔTa • VOUT ΔVOUT ΔTa RFB1 RFB2 [mV/°C] × [ppm/°C] ÷ 1000 (Change of output voltage (Set output (Output voltage temperature with temperature) voltage value) coefficient) Caution The S-8340/8341 Series steps up from V DD = 0.9 V. However, 2.5 V or more for V DD is recommended to stabilize the output voltage and oscillation frequency. If V DD is taken from V IN or other power sources, instead of V OUT, VDD should be 2.5 V or more. However, if V DD is other than 4.0 V, note that the output voltage accuracy of ±2.0% is not guaranteed due to dependency of output voltage on V DD. In particular, accuracy of output voltage is degraded significantly when the V DD voltage is 6.0 V or more. Therefore, do not use this IC when the V DD voltage is 6.0 V or more. If V DD of 2.5 V or more is applied, increase power supply so that VDD becomes 2.5 V or more within the soft-start time (6.0 ms). 300 kΩ 100 kΩ

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 VDD ON/OFF VOUT VSS RFB2 CFB RFB1 FBEXT CSS CVREF SENSE + A A A Oscilloscope Figure 8

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series  Operation 1. Switching Control Method 1. 1 PWM Control (S-8340 Series) The S-8340 Series is a DC-DC converter using a pulse width modulation method (PWM). In conventional PFM DC-DC converters, pulses are ski pped when the output load curr ent is low, causing a fluctuation in the ripple frequency of the output voltage, resulting in an increase in the ripple voltage. The switching frequency does not change, although the pulse width changes fr om 0 to 82% corresponding to each load current in the S-8340 Series. The ripple voltage generated from switching can thus be eliminated easily through a filter. When the pulse widt h is 0% (when no load is applied or t he input voltage is high), pulses are skipped and the current consumption is low. 1. 2 PWM/PFM Switching Control (S-8341 Series) The S-8341 Series is a DC-DC converte r that automatically sw itches between a pulse width modulation method (PWM) and a pulse frequency modulation method (PFM) depending on the load current. The S-8341 Series operates under PWM c ontrol with the pulse duty changing from 27 to 82% (A and B types) and from 21 to 82% (C and D types) in a high output load current area. The S-8341 Series operates under PFM control with the pulse duty fixed at 27% (A and B types) and at 21% (C and D types) in a low load current area, and pulses are skipped a ccording to the load current. The oscillation circuit thus oscillates intermittently so that the resultant lower self current c onsumption prevents a reduction in the efficiency at a low load current. The switching point from PWM control to PFM c ontrol depends on the external devices (coil, diode, etc.), and input and output voltage values. The S-8341 Series is an especially highly efficient DC-DC converter at an output load current around 1 mA. 2. Soft-Start Function The S-8340/8341 Series has a built-in soft-start circuit. This circuit enables the output voltage (V OUT) to rise gradually over the specified soft-start time (t SS) to suppress the overshooting of the output voltage and the rush current from the power supply when the power is switched on or the ON/OFF pin is changed to “H”. Generally, a rush current flows to an output capacit or through an inductor and a diode in the step-up circuit immediately after the power is turned on as shown in Figure 9 . Note that the soft-start function of this IC, however, does not limit this current. t (2 m s/d iv) Output voltage (1 V/div) Rush current (0.5 A/div) 3 V 0 V 1. 5 A 0 A S-8340A33AFT (V IN = 0 → 1. 9 V, R L = 300 k Ω ) Figure 9 Waveforms of Output Voltage and Rush Current at Soft-Start

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01  Series Products and External Parts Selection 1. Method for Selecting Series Products The S-8340/8341 Series is classified into eight types, according to the control systems (PWM and PWM/PFM switching), oscillation frequencies, and output voltage setting types. The following describes the features of respective types. Select the type according to the applications. 1. 1 Control Systems Two different control systems are available : PWM control system (S-8340 Series) and PWM/PFM switching control system (S-8341 Series). For applications for which the load cu rrent greatly differs between standby and operation, if the efficiency during standby is important, applying the PWM/ PFM switching system (S-8341 Series) realizes high efficiency during standby. For applications for which switching noise is critical , applying the PWM control system (S-8340 Series) whereby switching frequency does not change due to load current allows the ripple voltage to be easily eliminated by using a filter. 1. 2 Oscillation Frequencies Either oscillation frequencies, 600 kHz (A and B types) or 300 kHz (C and D types), can be selected. The A and B types whereby high operation frequency allows t he L value to be reduced, so a small inductor can be used. In addition, use of sm all output capacitors is effective for downsizing devices. The C and D types, whereby lower oscillation frequency rea lizes smaller self-consumption current, are highly efficient under light loads. In particular, the C type, when combined with a PWM/PFM switching control system, drastically improves the operation efficiency when the output load current is approximately 1 mA. 1. 3 Output Voltage Setting Either fixed output type (A and C types) or external setting type (B and D types) can be selected. The A and C types, whereby output voltage can be internally set between 2.5 and 6.0 V in the 0.1 V steps, realizes highly accurate output voltage of ±2.0% with internal highly resistant and highly accurate resistors. In the B and D types, the output voltage can be adjusted in the range 2.5 to 6.0 V by adding external resistors (R FB1 and RFB2) and a capacitor (CFB). A temperature gradient can be provided by installing a thermistor in series to RFB1 and RFB2. The resistance of RFB1 + RFB2 must not exceed 2 MΩ, and set the ratio of RFB1 to RFB2 so that the FB pin is at 1.0 V. Add CFB in parallel with RFB1 to prevent unstable operation due to output oscillation. Set CFB so that fOSC = 1/(2 × π × CFB × RFB1) is 0.1 to 20 kHz (normally, 10 kHz). Example : V OUT = 3.0 V, RFB1 = 200 kΩ, RFB2 = 100 kΩ, CFB = 100 pF The accuracy of the output voltage V OUT set with resistors R FB1 and R FB2 is affected by the absolute precision of external resistors R FB1 and R FB2, the FB pin input current (I FB) and IC power supply voltage (V DD) as well as the precision of the voltage at FB pin (1 V ±2.0%). When it is assumed that I FB is 0 nA, the maximum absolute value variations of external resistors RFB1 and RFB2 are RFB1max. and RFB2max., the minimum absolute value variations of external resistors RFB1 and RFB2 are RFB1min. and RFB2min., and the shift of the output vo ltage due to the dependence of voltage on V DD is ΔV, the minimum value (VOUT min.) and maximum value (VOUT max.) of variations of VOUT are expressed by the following formulas :

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series V OUT min. = (1+ ) × 0.98 − ΔV [V] V OUT max. = (1+ ) × 102 + ΔV [V] RFB1 and RFB2 must be adjusted in order to set the voltage accuracy of VOUT to the IC output voltage accuracy (VOUT ±2.0%) or lower. The smaller R FB1 and RFB2 are, the less V OUT is affected by the absolute value accuracy of R FB1 and RFB2. The smaller R FB1 and RFB2 are, the less VOUT is affected by IFB. To reduce the influence due to I FB that affects variations of V OUT, the RFB2 value must be set to a value sufficiently lower than the input impedance at the FB pin (1 V/50 nA = 20 MΩ (max.)). Reactive current flows through R FB1 and RFB2. Unless the reactive current value is limited as low as possible with respect to the actual load current, efficiency decreases. Therefore, R FB1 and RFB2 should be sufficiently large. Caution If the R FB1 and RFB2 values are too large (1 MΩ or more), VOUT is subject to be affected by external noise, therefore, thoroughly test the performance with the actual equipment. Since the accuracy of V OUT and reactive current must be traded off, they must be considered according to application requirements. Caution Connect the VDD pin to the VOUT pin for both the fixed output types and external setting types as shown in “  Standard Circuit”. In the cases when V DD requires to be applied from V IN or other power source instead of V OUT, raise VDD to 2.5 V or higher within the soft-start time (3.0 ms: A and B types, 6.0 ms: C and D types). When the VDD pin is connected to the VOUT pin, V IN can be increased slowly without any problems. The table below provides a rough guide for selecting a product type according to the application requirements of the application. Choose the product that gives you the largest number of circles (O). Table 9 S-8340 S-8341 A B C D A B C D The set output voltage is 6 V or less Set an output voltage freely The efficiency under light loads (approx. 1mA) is an important factor     To be operated with a medium load current (200 mA To be operated with a high load current (1 A class)         It is important to have a low-ripple voltage     Downsizing of external components is important     Remark The symbol " " denotes an indis pensable condition, while the symbol " " indicates that the corresponding series has superiority in that aspect. The symbol " " indicates particularly high superiority. RFB1 min. RFB2 max. RFB1 max. RFB2 min.

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 2. Inductor The inductance value (L value) greatly affects the maximum output current (IOUT) and the efficiency (η). As the L value is reduced gradually, the peak current (I PK) increases and I OUT increases. As the L value is made even smaller, IOUT decreases since the efficiency degrades and the current driveability is insufficient. As the L value is increased, the dissipat ion in the switching transistor due to I PK decreases, and the efficiency reaches the maximum at a certain L va lue. As the L value is made even la rger, the efficiency degrades since the dissipation due to the series resistance of the inductor increases. I OUT also decreases. In the S-8340/8341 Series, as the L value is incr eased, the output voltage ma y be unstable depending on the conditions of the input vo ltage, output voltage, and load current. Select the L value after performing a thorough valuation under actual use conditions. The gui delines for the L range are from 2.2 to 22 μH for the A and B types, and 4.7 to 47 μH for the C and D types. The recommended L value is 5 to 10 μH for the A and B types, and 10 to 22 μH for the C and D types. When choosing an inductor, attention to its allowable current should be paid since the current exceeding the allowable value will cause magnetic saturation in the inductor, leading to a marked decline in efficiency and a breakdown of the IC due to large current. An inductor should therefor e be selected so that I PK does not surpass its allowable current. I PK is represented by the following equations in non-continuous operation mode. IPK = 2I V V V fosc OUT OUT F IN() L ×× + − Where fOSC is the oscillation frequency, L is the inductance value of the inductor, and V F is the forward voltage of the diode. V F should be appropriately 0.4 V. For example, if a power supply with the input voltage (VIN) = 3 V, output voltage (VOUT) = 5 V, and load current (IOUT) = 30 mA is used, f OSC = 600 kHz when the S-8340A50AFT is used. When 10 μH is selected for the L value, I PK = 155 mA from the above formula. Therefore, in this ca se, an inductor with a permissible current of 155 mA or higher for the L value of 10 μH should be selected. 3. Diode Use an external diode that meets the following requirements :  Low forward voltage (Schottky barrier diode is recommended.)  High switching speed (50 ns max.)  The reverse-direction withstand voltage is VOUT + VF or higher.  The current rating is I PK or larger. 4. Capacitors (C IN, CL) A capacitor inserted on the input side (CIN) improves the efficiency by reducing the power impedance and stabilizing the input current. Select a C IN value according to the impedance of the power supply used. Approximately 47 to 100 μF is recommended for a capacitance depending on the im pedance of the power s ource and load current value. For the output side capacitor (C L), select a large capacitance with low ESR (Equivalent Series Resistance) for smoothing the ripple voltage. When the input voltage is extr emely high or the load current is extremely large, the output voltage may become unst able. In this case the unstable area will become narrow by selecting a large capacitance for an output capac itor. A tantalum electrolyte capacit or is recommended since the unstable area widens when a capacitor with a large ESR, such as an alumi num electrolyte capacitor, or a capacitor with a small ESR, such as a ceramic capacitor, is chosen. It is recommended that a capacitor of which the capacitance is 47 to 200 μF and ESR is 40 to 270 mΩ be selected. Fully evaluate input and output capacitors under actual operating conditions, then select them.

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series 5. External Transistors Enhancement (N-channel) MOS FET type or bipolar (NPN) type can be used for the external transistors. 5. 1 Enhancement (N-Channel) MOS FET Type The EXT pin can directly drive an N-channel MOS FET. When an N-channel MOS FET is used, efficiency will be 2 to 3% higher than that achieved by an NPN bipolar transistor since the MO S FET switching speed is faster and power dissipation due to the base current is avoided. A large current may flow at power on with some MOS FETs selected. Perform thorough evaluation using the actual devices to select. The reco mmended gate capacitance of the MOS FET to be used is 1200 pF or smaller. The important parameters in select ing a MOS FET are threshold volt age, breakdown voltage between drain and source, total gate capacitance, on-resistance, and the current rating. The EXT pin voltage swings between VDD and VSS. If V DD is low, a MOS FET of whic h the threshold voltage is low enough so that the MOS FET is comple tely turned on must be used. If V DD is high, the breakdown voltage between the gate and source must be higher by at least several volts. During the step-up operation, voltage VOUT + VF is applied between the drain and sour ce of the MOS FET. So the breakdown voltage between the drain and source should be higher than the V OUT + V F voltage by at least several volts. The total gate capacitance and the on-resistance affect the efficiency. The larger the total gate capacitanc e becomes and the higher the input vo ltage becomes, the more the power dissipation for charging and discharging the gate capacitance by switching operation increases, and affects the efficiency at low load current region. If the efficiency at low load is importan t, select MOS FETs with a small total gate capacitance. In the regions where the load current is high, the efficiency is affect ed by power dissipation caused by the resistance of the MOS FETs. If the efficiency under heavy l oad is particularly important in the application, choose MOS FETs which have an on-resistance as low as possible. As for the current rating, select a MOS FET whose maximum continuous drain current rating is higher than I PK. 5. 2 Bipolar (NPN) Type Figures 16 and 17 in “ Standard Circuits (2) Using Bipolar Transistors” show sample circuit diagrams using Sanyo Electric Co., Ltd. 2SD1628G fo r the bipolar transistor (NPN). T he driveability for in creasing the output current by means of a bipolar transistor depend on the hFE and Rb values of that bipolar transistor. The R b value is given by the following equation : Rb= − Find the necessary base current (I b) using the h FEvalue of the bipolar trans istor by the equation, I b = IPK/hFE, and select a smaller Rb value. A small Rb value can increase the output current, but the efficiency decreases. A current may flow as the pulses or voltage drops take place due to the wiring resistance or some other reason. Dete rmine an optimum value through experimentation. In addition, if a speed-up capacitor (C b) is inserted in parallel with the resistance (R b) as shown in Figures 16 and 17, the switching loss will be reduced, leading to a higher efficiency. Select a Cb value by using the following equation as a guide : Cb ≤ 2R f o s c 0 . 1bπ× × × However, the optimum C b value differs depending upon the characteristics of the bipolar transistor. Select a C b value after performing a thorough evaluation. VDD − 0.7 Ib 0.4 I EXTH

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01  Precautions  Mount the external capacitors, diode, coil, and other peripheral parts as close to the IC as possible, and make a one- point grounding.  Characteristic ripple voltage and spike noise occur in IC cont aining switching regulators. Moreover rush current flows at the time of a power supply inje ction. Because these largely depend on the coil, t he capacitor and impedance of power supply used, fully check them using an actually mounted model.  Make sure that dissipation of the sw itching transistor especially at high te mperature will not surpass the power dissipation of the package.  To stabilize operation, use a capacitor with a low ESR as a bypass capacitor between the VDD and VSS pins of the IC, and install and wire it with a short distance and a low impedance. Connect C VREF to the VSS pin.  The main circuit of the IC operates on the inte rnal power supply connected to the CVREF pin. C VREF is a bypass capacitor that stabilizes the internal power supply. Use a 0.01 to 1 μF ceramic capacitor as CVREF and install and wire it to assure a short distance and a low impedance.  Switching regulator performance vari es depending on the design of PC pattern s, peripheral circuits and parts. Thoroughly evaluate the actual device when setting. When using parts other than those wh ich are recommended, contact the SII Semiconductor Corporation marketing department.  Do not apply an electrostatic discharge to this IC that ex ceeds the performance ratings of the built-in electrostatic protection circuit.  SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party.

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series  Characteristics 1. Examples of Major Characteristics (Typical Data) (1) Current Consumption 1 (I SS1) vs. Supply Voltage (VDD) S-8340A33A (fOSC : 600 kHz) 200 400 600 800 1000 V DD (V) ISS1 (μA) 25°C 85°C Ta = −40°C S-8340C33A (fOSC : 300 kHz) 100 200 300 400 500 600 V DD (V) 25°C 85°C Ta = −40°C ISS1 (μA) (2) Current Consumption 2 (I SS2) vs. Supply Voltage (VDD) S-8340A33A (fOSC : 600 kHz) 100 150 200 250 300 V DD (V) ISS 2 (μA) 25°C 85°C Ta = −40°C S-8340C33A (fOSC : 300 kHz) 100 150 200 250 300 V DD (V) 25°C 85°C Ta = −40°C ISS 2 (μA) (3) Current Consumption at Shutdown (I SSS) vs. Supply Voltage (VDD) 0.0 0.2 0.4 0.6 0.8 1.0 5.5 6.0 V DD (V) ISSS (μ A) 25°C 85°C Ta = −40°C S-8340A33A (f OSC : 600 kHz) / S-8340C33A (f OSC : 300 kHz) (4) Oscillation Frequency (fOSC) vs. Supply Voltage (VDD) S-8340A33A (fOSC : 600 kHz) 400 500 600 700 800 V DD (V) fOSC (kHz) 25°C 85°C Ta = −40°C S-8340C33A (fOSC : 300 kHz) 200 250 300 350 400 V DD (V) fOSC (kHz) 25°C 85°C Ta = −40°C

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (5) EXT Pin Output Current “H” (I EXTH) vs. Supply Voltage (VDD) (6) EXT Pin Output Current “L” (I EXTL) vs. Supply Voltage (VDD) −60 −50 −40 −30 −20 −10 V DD (V) IEXTH (mA) 25°C 85°C Ta = −40°C S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz ) 100 120 140 V DD (V) IEX TL (mA) 25°C 85°C Ta = −40°C S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz ) (7) Soft-Start Time (t SS) vs. Supply Voltage (VDD) S-8340A33A (fOSC : 600 kHz) V DD (V) tSS (ms) 25°C Ta = −40°C 85°C S-8340C33A (fOSC : 300 kHz) V DD (V) tSS (ms) 25°C Ta = −40°C 85°C (8) ON/OFF Pin Input Voltage “H” (V SH) vs. Supply Voltage (VDD) (9) ON/OFF Pin Input Voltage “L” (V SL) vs. Supply Voltage (VDD) 0.0 0.2 0.4 0.6 0.8 1.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 V DD (V) VSH (V) 25°C 85°C Ta = −40°C S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz ) 0.0 0.2 0.4 0.6 0.8 1.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 V DD (V) VSL (V) 25°C 85°C Ta = −40°C S-8340A33A (fOSC : 600 kHz) / S-8340C33A (fOSC : 300 kHz ) (10) Output Voltage (VOUT) vs. Supply Voltage (VDD) 2.40 2.42 2.44 2.46 2.48 2.50 2.52 2.54 V DD (V) VOUT (V) 25°C 85°C Ta = −40°C S-8340A25A (f OSC : 600 kHz) / S-8340C25A (f OSC : 300 kHz) 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 V DD (V) VOUT (V) 25°C 85°C Ta = −40°C S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz )

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series 4.90 4.92 4.94 4.96 4.98 5.00 5.02 5.04 V DD (V) VOUT (V) 25°C 85°C Ta = −40°C S-8340A50A (fOSC : 600 kHz ) / S-8340C50A (fOSC : 300 kHz ) (11) Oscillation Start Voltage (VST) vs. Temperature (Ta) (12) Maximum Duty Ratio (MaxDuty) vs. Supply Voltage (VDD) 0.4 0.5 0.6 0.7 0.8 0.9 1.0 −40 −20 0 20 40 60 80 Ta (°C) VST (V) S-8340A33A (fOSC : 600 kHz ) / S-8340C33 A (fOSC :3 0 0 k H z) V DD (V) MaxDuty (%) 85°C 25°C Ta = −40°C S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz ) (13) PWM/PFM Switching Duty Ratio (PFMDuty) vs. Supply Voltage (VDD) S-8341A33A (f OSC : 600 kHz) V DD (V) PFMDuty (%) 85°C 25°C Ta = −40°C S-8341C33A (f OSC : 300 kHz) V DD (V) PFMDuty (%) 85°C 25°C Ta = −40°C (14) Current Limit Detection Ratio (VSENSE) vs. Supply Voltage (VDD) 105 110 115 120 125 130 135 V DD (V) VSENSE (mV) 85°C 25°C Ta = −40°C S-8340A33A (fOSC : 600 kHz ) / S-8340C33 A (fOSC : 300 kHz )

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 2. Examples of Transient Response Characteristics (1) Power-on (Typical Data) S-8340A33AFT, fOSC = 600 kHz, Ta = 25°C VIN = 0 → 1.98 V, IOUT = 1 mA t (2 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V IN (1 V/div) VIN = 0 → 1.98 V, IOUT = 200 mA t (2 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V IN (1 V/div) S-8340C33AFT, fOSC = 300 kHz, Ta = 25°C I t (4 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V IN (1 V/div) VIN = 0 → 1.98 V, IOUT = 1 mA t (4 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V IN (1 V/div) VIN = 0 → 1.98 V, IOUT = 200 mA (2) ON/OFF Pin Response (Typical Data) S-8340A33AFT, fOSC = 600 kHz, Ta = 25°C t (2 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V ON/OFF (1 V/div) VON/OFF = 0 → 1.98 V, IOU T = 1 mA t (2 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V ON/OFF (1 V/div) VON /OF F= 0 → 1.98 V, IOUT = 200 mA S-8340C33AFT, fOSC = 300 kHz, Ta = 25°C t (4 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V ON/OFF (1 V/div) VON/OFF = 0 → 1.98 V, IOU T = 1 mA t (4 ms/div) V OUT (1 V/div) 3 V 0 V 3 V 0 V V ON/OFF (1 V/div) VON/OFF = 0 → 1.98 V, IOU T = 200 mA

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (3) Load Fluctuations S-8340A33AFT, fOSC = 600 kHz S-8340C33AFT, f OSC = 300 kHz VIN = 1.98 V, IOUT = 100 mA → 100 μA t (4 ms/div) V OUT (0.02 V/div) 100 mA 100 μ A I OUT t (4 ms/div) 100 mA 100 μ A I OUT V OUT ( 0.02 V/div) VIN = 1.98 V, IOUT = 100 mA → 100 μA S-8340A33AFT, fOSC = 600 kHz S-8340C33AFT, f OSC = 300 kHz t (0.2 ms/div) V OUT (0.02 V/div) 100 mA 100 μ A I OUT VIN = 1.98 V, IOUT = 100 μA → 100 mA t (0.2 ms/div) 100 mA 100 μ A I OUT V OUT (0.02 V/div) VIN = 1.98 V, IOUT = 100 μA → 100 mA (4) Input Voltage Fluctuations S-8340A33AFT, fOSC = 600 kHz S-8340C33AFT, f OSC = 300 kHz t (0.2 ms/div) V OUT (0.02 V/div) 2.64 V 1.98 V V IN (0.3 V/div) VIN = 1.98 → 2.64 V, IOUT = 100 mA 66 t (0.2 ms/div) 2.64 V 1.98 V V IN (0.4 V/div) V OUT (0.02 V/div) VIN = 1.98 → 2.64 V, IOUT = 100 mA S-8340A33AFT, fOSC = 600 kHz S-8340C33AFT, f OSC = 300 kHz t (0.2 ms/div) 2.64 V 1.98 V V IN (0.3 V/div) V OUT (0.02 V/div) VIN = 2.64 → 1.98 V, IOUT = 100 mA t (0.2 ms/div) 2.64 V 1.98 V V IN (0.4 V/div) V OUT (0.02 V/div) VIN = 2.64 → 1.98 V, IOUT = 100 mA

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01  Reference Data Reference data are intended for use in se lecting external parts to the IC. The information therefore provides characteristic data in which external par ts are selected with a view of wide vari ety of IC applications. All data shows typical value. 1. External Parts for Reference Data Table 10 External Parts List for Output Current vs. Efficiency, Output Current vs. Output Voltage Characteristics Data for A Type No. Product Name Output Voltage Inductor Transistor Di ode Output Capacitor Sense Resistor Application (1) S-8340A25AFT 2.5 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 0 Ω *1 (2) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *2 (3) S-8341A25AFT CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 *1 (4) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *2 (5) S-8340A33AFT 3.3 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 *1 (6) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *2 (7) S-8341A33AFT CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 *1 (8) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *2 (9) S-8340A50AFT 5.0 V CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1 *1 (10) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *2 (11) S-8341A50AFT CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1 *1 (12) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *2 *1. CDRH5D18 + NDS335N + RB491D: For small and thin parts of which height is 2 mm or shorter (The maximum current of an external part should be set to 1.7 A.) *2. CDRH124 + FTS2001 + RBO81L-20: For heavy load current (The maximum current of an external part should be set to 4.5 A.) Table 11 External Parts List for Output Current vs. Efficiency, Output Current vs. Output Voltage Characteristics Data for C Type No. Product Name Output Voltage Inductor Transistor Di ode Output Capacitor Sense Resistor Application (13) S-8340C25AFT 2.5 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 0 Ω *3 (14) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *4 (15) S-8341C25AFT CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (16) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *4 (17) S-8340C33AFT 3.3 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (18) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *4 (19) S-8341C33AFT CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (20) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *4 (21) S-8340C50AFT 5.0 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (22) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *4 (23) S-8341C50AFT CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (24) CDRH124/10 μH FTS2001 RBO81L −20 F951C476MG1 × 2 *4 *3. CDRH6D28 + FDN335N + RB491D: For part height of 3 mm and high efficiency *4. CDRH124 + FTS2001 + RBO81L-20: For optimizing the load current driveability

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series Table 12 External Parts List for Output Current vs. PFM/PWM Switching Input Voltage Characteristics Data for A Type No. Product Name Output Voltage Inductor Transistor Di ode Output Capacitor Sense Resistor Application (25) S-8341A25AFT 2.5 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 0 Ω *1 (26) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *2 (27) S-8341A33AFT 3.3 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 *1 (28) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *2 (29) S-8341A50AFT 5.0 V CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1 *1 (30) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *2 *1. CDRH5D18 + NDS335N + RB491D: For small and thin parts of which height is 2 mm or shorter (The maximum current of an external part should be set to 1.7 A.) *2. CDRH124 + FTS2001 + RBO81L-20: For heavy load current (The maximum current of an external part should be set to 4.5 A.) Table 13 External Parts List for Output Current vs. PFM/PWM Switching Input Voltage Characteristics Data for C Type No. Product Name Output Voltage Inductor Transistor Di ode Output Capacitor Sense Resistor Application (31) S-8341C25AFT 2.5 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 0 Ω *3 (32) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *4 (33) S-8341C33AFT 3.3 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (34) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *4 (35) S-8341C50AFT 5.0 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 *3 (36) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 *4 *3. CDRH6D28 + FDN335N + RB491D: For part heights of 3 mm and high efficiency *4. CDRH124 + FTS2001 + RBO81L-20: For optimizing the load current driveability

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 External Parts List for Ripple Data Table 14 External Parts for Output Current vs. Ripple Voltage Characteristics Data for A Type No. Product Name Output Voltage Inductor Transistor Di ode Output Capacitor Sense Resistor Application (37) S-8340A25AFT 2.5 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 F920J476MB3 × 2 0 Ω *1 (38) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *2 (39) S-8341A25AFT CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 F920J476MB3 × 2 *1 (40) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *2 (41) S-8340A33AFT 3.3 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 F920J476MB3 × 2 *1 (42) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *2 (43) S-8341A33AFT CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1 F920J476MB3 × 2 *1 (44) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *2 (45) S-8340A50AFT 5.0 V CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1 F951A476MF1 × 2 *1 (46) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *2 (47) S-8341A50AFT CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1 F951A476MF1 × 2 *1 (48) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *2 *1. CDRH5D18 + NDS335N + RB491D: For small and thin parts of which the height is 2 mm or shorter (The maximum current of an external part should be set to 1.7 A.) *2. CDRH124 + FTS2001 + RBO81L-20: For heavy load current (The maximum current of an external part should be set to 4.5 A.)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series Table 15 External Parts for Output Current vs. Ripple Voltage Characteristics Data for C Type No. Product Name Output Voltage Inductor Transistor Di ode Output Capacitor Sense Resistor Application (49) S-8340C25AFT 2.5 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 F951C476MG1 × 2 0 Ω *3 (50) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *4 (51) S-8341C25AFT CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 F951C476MG1 × 2 *3 (52) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *4 (53) S-8340C33AFT 3.3 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 F951C476MG1 × 2 *3 (54) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *4 (55) S-8341C33AFT CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 F951C476MG1 × 2 *3 (56) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *4 (57) S-8340C50AFT 5.0 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 F951C476MG1 × 2 *3 (58) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *4 (59) S-8341C50AFT CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1 F951C476MG1 × 2 *3 (60) CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2 F951A107MG1 × 2 *4 *3. CDRH6D28 + FDN335N + RB491D: For part heights of 3 mm and high efficiency *4. CDRH124 + FTS2001 + RBO81L-20: For optimizing the load current driveability

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 Performance Data for Parts The following shows the performance of external parts. Table 16 Performance of External Parts Component Product Name Manufacturer Performance L DC resistance Max. Current Diameter Height Inductor CDRH5D18 Sumida Corporation 4.1 μH 0.042 Ω typ. 0.057 Ω max. 1.95 A 5.7 mm typ. 6.0 mm max. 1.8 mm typ. 2.0 mm max. CDRH124 10 μH 0.028 Ω max. 4.5 A 12. 0 mm typ. 12.3 mm max. 4.5 mm max. CDRH6D28 10 μH 0.048 Ω typ. 0.065 Ω max. 1.70 A 6.7 mm typ. 7.0 mm max. 3.0 mm max. Diode RB491D Rohm Corporation Forward current 1.0 A @VF = 0.45 V, Vrm = 25 V RB081L−20 Forward current 5.0 A @V F = 0.45 V, Vrm = 25 V Capacitor (output capacitance) (tantalum electrolytic capacitor) F951C476MG1 Nichicon Corporation 47 μF, 16 V, 5.5 × 4.8 × 2.3 mm max., ESR = 0.08 Ω (nominal value) F951A476MF1 47 μF, 10 V, 5.5 × 4.8 × 2.0 mm max., ESR = 0.1 Ω (nominal value) F920J476MB3 47 μF, 6.3 V, 3.6 × 3 × 1.2 mm max., ESR = 0.27 Ω (nominal value) F951A107MG1 100 μF, 10 V, 5.5 × 4.8 × 2.3 mm max., ESR = 0.08 Ω (nominal value) External transistor (N-channel FET) NDS335N*1 Fairchild Semiconductor Corporation V DSS = 20 V max., VGSS = 8 V max., ID = 1.7 A max., Vth = 0.5 V to 1 V, Ciss = 240 pF typ., RDS(ON) = 0.14 Ω max.(VGS = 2.7 V), SOT-23-3 package or equivalent FDN335N VDSS = 20 V max., VGSS = 8 V max., ID = 1.7 A max., Vth = 0.4 V to 1.5 V, Ciss = 310 pF typ., RDS(ON) = 0.10 Ω max.(VGS = 2.5 V), SOT-23-3 package or equivalent FTS2001 Sanyo Electric Co., Ltd. VDSS = 20 V max., VGSS = 8 V max., ID = 5 A max., Vth = 0.4 V to 1.3 V, Ciss = 750 pF typ., RDS(ON) = 0.046 Ω max.(VGS = 2.5 V), 8-Pin TSSOP package *1. The manufacturer recommends the FDN335N as an alternative for the NDS335N. Caution The value of each characteristic in Table 16 depends on the materials prepared by each manufacturer, however, confirm the specifications by referring to respective materials when using any of the above.

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series 2. Output Current (IOUT) vs. Efficiency (η) Characteristics The following shows the ac tual output current (I OUT) vs. efficiency ( η) characteristics when the S-8340/8341 Series is used under conditions (1) to (24) in Tables 10 and 11. (1) S-8340A25AFT (2) S-8340A25AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.2V 1.5V 1.8V (CDRH5D18/4.1 μH, NDS335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10μH, FTS2001) (3) S-8341A25AFT (4) S-8341A25AFT 100 0.1 1 10 100 1000 η(%) VIN =1.2V 1.5V 1.8V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 100 0.1 1 10 100 1000 10000 η（%) VIN =1.5V 1.8V 2.4V IOUT(mA) (CDRH124/10 μH, FTS2001) (5) S-8340A33AFT (6) S-8340A33AFT 100 0.1 1 10 100 1000 η(%) VIN =1.2V 3.0V 1.8V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (7) S-8341A33AFT (8) S-8341A33AFT 100 0.1 1 10 100 1000 η(%) VIN =1.2V 3.0V 1.8V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) VIN = 1.2 V (CDRH5D18/4.1 μH, NDS335N) η (%) η (%) η (%) η (%) η (%) η (%) η (%) η (%) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V V IN = 1.2 V VIN = 1.5 V VIN = 1.5 V

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (9) S-8340A50AFT (10) S-8340A50AFT 100 0.1 1 10 100 1000 η(%) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH124/10 μH, FTS2001) (11) S-8341A50AFT (12) S-8341A50AFT 100 0.1 1 10 100 1000 η(%) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.8V 4.5V 3.0V IOUT(mA)IOUT(mA) (CDRH124/10 μH, FTS2001) (13) S-8340C25AFT (14) S-8340C25AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.2V 1.5V 1.8V (CDRH6D28/10 μH, FDN335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (15) S-8341C25AFT (16) S-8341C25AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.2V 1.5V 1.8V (CDRH6D28/10 μH, FDN335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V (CDRH5D18/4.1 μH, NDS335N) IOUT (mA) (CDRH124/10 μH, FTS2001) IOUT (mA) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) η (%) η (%) η (%) η (%) η (%) η (%) η (%) η (%)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (17) S-8340C33AFT (18) S-8340C33AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.2V 3.0V 1.8V (CDRH6D28/10 μH, FDN335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (19) S-8341C33AFT (20) S-8341C33AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.2V 3.0V 1.8V (CDRH6D28/10 μH, FDN335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (21) S-8340C50AFT (22) S-8340C50AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.8V 3.0V 4.5V (CDRH6D28/10 μH, FDN335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH124/10 μH, FTS2001) (23) S-8341C50AFT (24) S-8341C50AFT 100 0.1 1 10 100 1000 IOUT(mA) η(%) VIN =1.8V 3.0V 4.5V (CDRH6D28/10 μH, FDN335N) 100 0.1 1 10 100 1000 10000 η(%) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH124/10μH, FTS2001) VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V (CDRH6D28/10 μH, FDNS335N) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) η (%) η (%) η (%) η (%) η (%) η (%) η (%) η (%) (CDRH124/10 μH, FTS2001)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 3. Output Current (IOUT) vs. Output Voltage (VOUT) Characteristics The following shows the actual output current (I OUT) vs. output voltage (V OUT) characteristics when the S-8340/8341 Series is used under conditions (1) to (24) in Tables 10 and 11. (1) S-8340A25AFT (2) S-8340A25AFT 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.2V 1.8V 1.5V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (3) S-8341A25AFT (4) S-8341A25AFT 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.2V 1.8V 1.5V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (5) S-8340A33AFT (6) S-8340A33AFT 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 V (V) VIN =1.2V 3.0V 1.8V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 10000 V (V) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (7) S-8341A33AFT (8) S-8341A33AFT 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 V (V) VIN =1.2V 3.0V 1.8V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 10000 V (V) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V IOUT (mA) IOUT (mA) VIN = 1.2 V VIN = 1.5 V

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (9) S-8340A50AFT (10) S-8340A50AFT 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 V (V) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 10000 V (V) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH124/10 μH, FTS2001) (11) S-8341A50AFT (12) S-8341A50AFT 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 V (V) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 10000 V (V) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH124/10 μH, FTS2001) (13) S-8340C25AFT (14) S-8340C25AFT 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.2V 1.8V 1.5V IOUT(mA) (CDRH6D28/10 μH, FDN335N) 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (15) S-8341C25AFT (16) S-8341C25AFT 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.2V 1.8V 1.5V IOUT(mA) (CDRH6D28/10 μH, FDN335N) 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 2.62 0.1 1 10 100 1000 V (V) VIN =1.5V 2.4V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) IOUT (mA) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDNS335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDNS335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) IOUT (mA)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (17) S-8340C33AFT (18) S-8340C33AFT 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 V (V) VIN =1.2V 3.0V 1.8V IOUT(mA) (CDRH6D28/10 μH, FDN335N) 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 10000 V (V) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (19) S-8341C33AFT (20) S-8341C33AFT 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 V (V) VIN =1.2V 3.0V 1.8V IOUT(mA) (CDRH6D28/10 μH, FDN335N) 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0.1 1 10 100 1000 10000 V (V) VIN =1.5V 3.0V 1.8V IOUT(mA) (CDRH124/10 μH, FTS2001) (21) S-8340C50AFT (22) S-8340C50AFT 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 V (V) VIN =1.8V 4.5V3.0V IOUT(mA) (CDRH6D28/10 μH, FDN335N) 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 10000 V (V) VIN =1.8V 4.5V3.0V IOUT(mA) (CDRH124/10 μH, FTS2001) (23) S-8341C50AFT (24) S-8341C50AFT 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 V (V) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH6D28/10 μH, FDN335N) 4.90 4.95 5.00 5.05 5.10 5.15 5.20 5.25 5.30 0.1 1 10 100 1000 10000 V (V) VIN =1.8V 4.5V 3.0V IOUT(mA) (CDRH124/10 μH, FTS2001) VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) VOUT (V) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) IOUT (mA) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) IOUT (mA)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series 4. Output Current (IOUT) vs. PFM/PWM Switching Input Voltage (VIN) Characteristics The following shows the actual output current (I OUT) vs. PFM/PWM switching input voltage (V IN) characteristics when the S-8341 Series is used under conditions (25) to (36) in Tables 12 and 13. (25) S-8341A25AFT (26) S-8341A25AFT V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) PFM PWM V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 11 0 1 0 0 IOUT(mA) (CDRH124/10 μH, FTS2001) PFM PWM (27) S-8341A33AFT (28) S-8341A33AFT V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) PFM PWM V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 1 10 100 1000 IOUT(mA) (CDRH124/10 μH, FTS2001) PFM PWM (29) S-8341A50AFT (30) S-8341A50AFT V (V) 0.0 1.0 2.0 3.0 4.0 5.0 0.1 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N) PFM PWM V (V) 0.0 1.0 2.0 3.0 4.0 5.0 1 10 100 1000 IOUT(mA) (CDRH124/10 μH, FTS2001) PFM PWM (31) S-8341C25AFT (32) S-8341C25AFT V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 11 0 1 0 0 IOUT(mA) (CDRH6D28/10 μH, FDN335N) PFM PWM V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 11 0 1 0 0 IOUT(mA) (CDRH124/10 μH, FTS2001) PFM PWM (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH5D18/4.1 μH, NDS335N) (CDRH6D28/10 μH, NDS335N) (CDRH124/10 μH, FTS2001) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) VIN (V) VIN (V) VIN (V) VIN (V) VIN (V) VIN (V) VIN (V) VIN (V) IOUT (mA) IOUT (mA)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (33) S-8341C33AFT (34) S-8341C33AFT V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N) PFM PWM V (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 11 0 1 0 0 IOUT(mA) (CDRH124/10 μH, FTS2001) PFM PWM (35) S-8341C50AFT (36) S-8341C50AFT V (V) 0.0 1.0 2.0 3.0 4.0 5.0 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N) PFM PWM V (V) 0.0 1.0 2.0 3.0 4.0 5.0 1 10 100 1000 IOUT(mA) (CDRH124/10 μH, FTS2001) PFM PWM VIN (V) VIN (V) VIN (V) VIN (V) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N) (CDRH124/10 μH, FTS2001) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series 5. Output Current (IOUT) vs. Ripple Voltage (Ripple) Characteristics The following shows the actual output current (I OUT) vs. ripple voltage (Ripple) characteristics when the S-8340/8341 Series is used under conditions (37) to (60) in Tables 14 and 15. (37) S-8340A25AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT (mA) (CDRH5D18/4.1 μH, NDS335N,47 μF) VIN=1.2V 1.5V 1.8V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT (mA) (CDRH5D18/4.1 μH,NDS335N,47 μF×2) VIN=1.2V 1.5V 1.8V (38) S-8340A25AFT Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH,FTS2001,47 μF×2) 1.8V VIN =1.5V 2.4V Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH,FTS2001,100 μF×2) 2.4VVIN =1.5 V 1.8V (39) S-8341A25AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF) 1.8V 1.5V VIN =1.2 V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF×2) 1.8V 1.5V VIN =1.2V (40) S-8341A25AFT Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8V VIN =1.5 V 2.4V Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH,FTS2001,100 μF×2) 1.8V VIN =1.5V 2.4V Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) (CDRH5D18/4.1 μH, NDS335N, 47 μF) Ripple (mV) (CDRH124/10 μH, FTS2000, 47 μF × 2) (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) (CDRH5D18/4.1 μH, NDS335N, 47 μF) VIN = 1.2 V VIN = 1.2 V VIN = 1.5 V VIN = 1.5 V VIN = 1.5 V VIN = 1.5 V VIN = 1.2 V VIN = 1.2 V (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA) IOUT (mA)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (41) S-8340A33AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF) 1.8V VIN =1.2 V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF×2) 1.8V VIN =1.2V 3.0V (42) S-8340A33AFT Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8V VIN =1.5V 3.0V Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) 1.8V VIN =1.5V 3.0V (43) S-8341A33AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF) 1.8V VIN =1.2V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH,NDS335N,47 μF×2) 1.8V VIN =1.2V 3.0V (44) S-8341A33AFT Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8V VIN =1.5 V 3.0V Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH,FTS2001,100 μF×2) 1.8VVIN =1.5V 3.0V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2) (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) IOUT (mA) IOUT (mA) (CDRH5D18/4.1 μH, NDS335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2) (CDRH5D18/4.1 μH, NDS335N, 47 μF)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (45) S-8340A50AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH,NDS335N,47 μF×2) VIN =1.8V 4.5V 3.0V (46) S-8340A50AFT Ripple(mV) 100 150 200 250 300 350 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 150 200 250 300 350 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH,FTS2001,100 μF×2) VIN =1.8 V 4.5V 3.0V (47) S-8341A50AFT Ripple(mV) 100 150 200 250 300 350 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 150 200 250 300 350 1 10 100 1000 IOUT(mA) (CDRH5D18/4.1 μH, NDS335N,47 μF×2) VIN =1.8V 4.5V 3.0V (48) S-8341A50AFT Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 200 300 400 500 600 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) VIN =1.8V 4.5V 3.0V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) IOUT (mA) IOUT (mA) (CDRH5D18/4.1 μH, NDS335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2) (CDRH5D18/4.1 μH, NDS335N, 47 μF × 2) IOUT (mA) IOUT (mA) (CDRH5D18/4.1 μH, NDS335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (49) S-8340C25AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,47 μF) VIN =1.2V 1.5V 1.8V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,100 μF) VIN =1.2V 1.5V 1.8V (50) S-8340C25AFT Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8V VIN =1.5V 2.4V Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) 2.4V VIN =1.5V 1.8V (51) S-8341C25AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,47 μF) 1.8V 1.5V VIN =1.2V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,100 μF) 1.8V 1.5V VIN =1.2V (52) S-8341C25AFT Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8V VIN =1.5 V 2.4V Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) 1.8V VIN =1.5V 2.4V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) (CDRH6D28/10 μH, FDN335N, 100 μF) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2) CDRH6D28/10 μH, FDN335N, 100 μF) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series (53) S-8340C33AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,47 μF) 1.8V VIN =1.2V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,100 μF) 1.8V VIN =1.2V 3.0V (54) S-8340C33AFT Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8V VIN =1.5V 3.0V Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) 1.8V VIN =1.5V 3.0V (55) S-8341C33AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,47 μF) 1.8V VIN =1.2V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,100 μF) 1.8V VIN =1.2V 3.0V (56) S-8341C33AFT Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) 1.8VVIN =1.5V 3.0V Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) 1.8V VIN =1.5V 3.0V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V VIN = 1.2 V VIN = 1.5 V Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) (CDRH6D28/10 μH, FDN335N, 100 μF) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2) (CDRH6D28/10 μH, FDN335N, 100 μF) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2)

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series Rev.4.0_01 (57) S-8340C50AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,47 μF) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,100 μF) VIN =1.8V 4.5V 3.0V (58) S-8340C50AFT Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) VIN =1.8 V 4.5V 3.0V Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) VIN =1.8V 4.5V 3.0V (59) S-8341C50AFT Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,47 μF) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 150 200 250 300 1 10 100 1000 IOUT(mA) (CDRH6D28/10 μH, FDN335N,100 μF) VIN =1.8V 4.5V 3.0V (60) S-8341C50AFT Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,47 μF×2) VIN =1.8V 4.5V 3.0V Ripple(mV) 100 200 300 400 500 10 100 1000 10000 IOUT(mA) (CDRH124/10 μH, FTS2001,100 μF×2) VIN =1.8V 4.5V 3.0V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V VIN = 1.8 V Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) Ripple (mV) (CDRH6D28/10 μH, FDN335N, 100 μF) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2) (CDRH6D28/10 μH, FDN335N, 100 μF) IOUT (mA) IOUT (mA) (CDRH6D28/10 μH, FDN335N, 47 μF) (CDRH124/10 μH, FTS2001, 100 μF × 2) IOUT (mA) IOUT (mA) (CDRH124/10 μH, FTS2001, 47 μF × 2)

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Disclaimers (Handling Precautions) 1. All the information described herei n (product data, specifications, figur es, tables, programs, algorithms and application circuit examples, etc.) is cu rrent as of publishing dat e of this document and is subject to change without notice. 2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of any specific mass-production design. SII Semiconductor Corporation is not responsible for damages caused by the reasons other than the products or infringement of third-party intellectual property rights and any other rights due to the use of the information described herein. 3. SII Semiconductor Corporation is not responsible for da mages caused by the incorrect information described herein. 4. Take care to use the products described herein within their specified ranges. Pay special attention to the absolute maximum ratings, operation voltage range and electrical characteristics, etc. SII Semiconductor Corporation is not re sponsible for damages caused by failu res and/or accidents, etc. that occur due to the use of products outside their specified ranges. 5. When using the products described herei n, confirm their applicatio ns, and the laws and regulat ions of the region or country where they are used and verify suitability, safety and other factors for the intended use. 6. When exporting the products described herein, comply with the Foreign Exchange and Foreign Trade Act and all other export-related laws, and follow the required procedures. 7. The products described herein must not be used or prov ided (exported) for the purposes of the development of weapons of mass destruction or militar y use. SII Semiconductor Corporation is not responsible for any provision (export) to those whose purpose is to develop, manufactur e, use or store nuclear, biol ogical or chemical weapons, missiles, or other military use. 8. The products described herein are not designed to be used as part of any device or equipment that may affect the human body, human life, or assets (such as medical equi pment, disaster prevention sy stems, security systems, combustion control systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses. Do not use those products without the prior written permission of SII Semiconductor Corporation. Especially, the products described her ein cannot be used for life support dev ices, devices implanted in the human body and devices that directly affect human life, etc. Prior consultation with our sales office is required when considering the above uses. SII Semiconductor Corporation is not responsible for damages caused by unauthorized or unspecified use of our products. 9. Semiconductor products may fail or malfunction with some probability. The user of these products s hould therefore take responsibility to gi ve thorough consideration to safety design including redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or death, fires and social damage, etc. that may ensue from the products' failure or malfunction. The entire system must be sufficiently evaluated and applied on customer's own responsibility. 10. The products described herein are not designed to be radi ation-proof. The necessary radiation measures should be taken in the product design by the customer depending on the intended use. 11. The products described herein do not affect human health under normal use. However, they contain chemical substances and heavy metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Take care when handling these with the bare hands to prevent injuries, etc. 12. When disposing of the products described herein, comply with the laws and ordinances of the country or region where they are used. 13. The information described herein contains copyright info rmation and know-how of SII Semiconductor Corporation. The information described herein does not convey any lic ense under any intellectual property rights or any other rights belonging to SII Semiconductor Corporation or a third party. Reproduction or copying of the information described herein for the purpose of disclosing it to a thir d-party without the express permission of SII Semiconductor Corporation is strictly prohibited. 14. For more details on the information de scribed herein, contact our sales office. 1.0-2016.01 www.sii-ic.com

Product Information

S8340 specifications and overview.

Summary

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Description

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Source title S8340 Datasheet(PDF) - Seiko Instruments Inc

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