S8520

DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 44

Technical content

www.sii-ic.com STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER © SII Semiconductor Corporation, 1997-2010 Rev.9.0_01 The S-8520/8521 Series is a CMOS step-down switching regula tor-controller with PWM control (S-8520 Series) and PWM / PFM switching control (S-8521 Series). The S-8520/8521 Series has a reference voltage source, an oscillation circuit, an error amplifier, and other components. The S-8520 Series provides low-ripple power, high efficiency, and excellent transient characteristics due to a PWM control circuit capable of varying the duty ratio linearly from 0% up to 100%. The S-8520/8521 Series also has a soft-start circuit that prevents oversh oot at startup. The S-8521 Series works with either PWM control or PFM contro l. It normally operates using PWM control with a duty ratio of 25% to 100%, but under a light load, it automatically switches to PFM control with a duty ratio of 25%. The S-8520/8521 Series ensures high efficiency over a wide range of conditio ns for devices, from the standby mode to the operation. By adding external Pch power MOS FET or PNP transistor, coil, capacitor, and externally connected diode, the S-8520/8521 Series can function as a step-down switching re gulator, and is ideal for power supply units of portable devices due to small SOT-23-5 and the featur e of low current consumption. It is also ideal for AC adapters due to the input voltage up to 16 V.  Features

• Low current consumption During operation: 60 μA max. (A, B types) 21 μA max. (C, D types) 100 μA max. (E, F types) During shutdown: 0.5 μA max.
• Input voltage: 2.5 V to 16 V (B, D, F types)

2.5 V to 10 V (A, C, E types)

• Output voltage: Selectable betw een 1.5 V and 6.0 V in 0.1 V step
• Duty ratio: 0% to 100% PWM control (S-8520 Series) 25% to100% PWM / PFM switching control (S-8521 Series)
• External parts are Pch power MOS FET or PNP transistor, coil, diode, and capacitor only (When using PNP transistor, add base resistor and capacitor).
• Oscillation frequency: 180 kHz typ. (A, B types) 60 kHz typ. (C, D types) 300 kHz typ. (E, F types)
• Soft-start function: 8 ms. typ. (A, B types) 12 ms. typ. (C, D types) 4.5 ms. typ. (E, F types)
• With a shutdown function
• With a built-in overload protection circuit Overload detection time: 4 ms. typ. (A type) 14 ms. typ. (C type) 2.6 ms. typ. (E type)
• Lead-free, Sn 100%, halogen-free *1. Refer to “ Product Name Structure ” for details.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01  Applications

• On-board power supplies of battery device s for mobile phone, electronic notebooks, PDAs.
• Power supplies for audio equipment, including portable CD players and headphone stereo equipment.
• Fixed voltage power supply for cameras, video and communication devices.
• Power supplies for microcomputers
• Conversion from NiH or four NiCd cells or two lithium-ion cells to 3.3 V / 3 V.
• Conversion of AC adapter input to 5 V / 3 V.  Package
• SOT-23-5

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01  Product Name Structure The control types, product types, and output voltage for the S-8520/8521 Series can be selected at the user’s request. Please refer to the “ 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-852 x x xx MC − xxx 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 *1 Product name (abbreviation) *2 Package name (abbreviation) MC : SOT-23-5 Output voltage 15 to 60 (When the output voltage is 1.5 V, it is expressed as 15.) Product type A: Oscillation frequency of 180 kHz, With overload protection circuit B: Oscillation frequency of 180 kHz, Without overload protection circuit C: Oscillation frequency of 60 kHz, With overload protection circuit D: Oscillation frequency of 60 kHz, Without overload protection circuit E: Oscillation frequency of 300 kHz, With overload protection circuit F: Oscillation frequency of 300 kHz, Without overload protection circuit Control system 0: PWM control 1: PWM / PFM switching control *1. Refer to the tape specifications. *2. Refer to “ 3. Product name list ”. 2. Package Package Name Drawing code Package Tape Reel SOT-23-5 MP005-A-P-SD MP00 5-A-C-SD MP005-A-R-SD

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 3. Product name list 3. 1 S-8520 Series Table 1 (1 / 2) Output voltage [V] S-8520AxxMC Series S-8520BxxMC Series S-8520CxxMC Series 1.5 − S-8520B15MC-ARAT2x − 1.8 − S-8520B18MC-ARDT2x −

2.0 S-8520A20MC-AVFT2x − −

2.1 S-8520A21MC-AVGT2x − −

2.4 − S-8520B24MC-ARJT2x −

2.5 S-8520A25MC-AVKT2x S-8520B25M C-ARKT2x S-8520C25MC-BRKT2x

2.6 S-8520A26MC-AVLT2x − −

2.7 S-8520A27MC-AVMT2x S-8520B27MC-ARMT2x S-8520C27MC-BRMT2x

2.8 S-8520A28MC-AVNT2x S-8520B28MC-ARNT2x S-8520C28MC-BRNT2x

2.9 S-8520A29MC-AVOT2x S-8520B29MC-AROT2x S-8520C29MC-BROT2x

3.0 S-8520A30MC-AVPT2x S-8520B30M C-ARPT2x S-8520C30MC-BRPT2x

3.1 S-8520A31MC-AVQT2x S-8520B31MC-ARQT2x S-8520C31MC-BRQT2x

3.2 S-8520A32MC-AVRT2x S-8520B32MC-ARRT2x S-8520C32MC-BRRT2x

3.3 S-8520A33MC-AVST2x S-8520B33M C-ARST2x S-8520C33MC-BRST2x

3.4 S-8520A34MC-AVTT2x S-8520B34MC-ARTT2x S-8520C34MC-BRTT2x

3.5 S-8520A35MC-AVUT2x S-8520B35MC-ARUT2x S-8520C35MC-BRUT2x

3.6 S-8520A36MC-AVVT2x S-8520B36M C-ARVT2x S-8520C36MC-BRVT2x

4.0 − S-8520B40MC-ARZT2x − 4.3 − S-8520B43MC-ASCT2x −

5.0 S-8520A50MC-AWJT2x S-8520B50MC-ASJT2x S-8520C50MC-BSJT2x

5.3 − S-8520B53MC-ASMT2x − Table 1 (2 / 2) Output voltage [V] S-8520DxxMC Series S-8520ExxMC Series S-8520FxxMC Series 1.5 − S-8520E15MC-BJAT2x S-8520F15MC-BNAT2x 1.6 − S-8520E16MC-BJBT2x − 1.8 − S-8520E18MC-BJDT2x S-8520F18MC-BNDT2x 2.0 − − S-8520F20MC-BNFT2x

2.5 S-8520D25MC-BVKT2x S-8520E25MC-BJKT2x S-8520F25MC-BNKT2x

2.6 − − S-8520F26MC-BNLT2x

2.7 S-8520D27MC-BVMT2x − S-8520F27MC-BNMT2x

2.8 S-8520D28MC-BVNT2x S-8520E28MC-BJNT2x S-8520F28MC-BNNT2x

2.9 S-8520D29MC-BVOT2x − −

3.0 S-8520D30MC-BVPT2x S-8520E30MC-BJPT2x S-8520F30MC-BNPT2x

3.1 S-8520D31MC-BVQT2x − S-8520F31MC-BNQT2x

3.2 S-8520D32MC-BVRT2x − −

3.3 S-8520D33MC-BVST2x S-8520E33MC-BJST2x S-8520F33MC-BNST2x

3.4 S-8520D34MC-BVTT2x − S-8520F34MC-BNTT2x

3.5 S-8520D35MC-BVUT2x − S-8520F35MC-BNUT2x

3.6 S-8520D36MC-BVVT2x − S-8520F36MC-BNVT2x

4.0 − − S-8520F40MC-BNZT2x 4.5 − − S-8520F45MC-BOET2x

5.0 S-8520D50MC-BWJT2x S-8520E50MC-BKJT2x S-8520F50MC-BOJT2x

5.2 − S-8520E52MC-BKLT2x − 5.5 − − S-8520F55MC-BOOT2x 6.0 − − S-8520F60MC-BOTT2x Remark 1. Please contact our sales office for products with 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.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 3. 2 S-8521 Series Table 2 (1 / 2) Output voltage [V] S-8521AxxMC Series S-8521BxxMC Series S-8521CxxMC Series 1.5 − S-8521B15MC-ATAT2x − 1.6 − − S-8521C16MC-BTBT2x 1.8 − S-8521B18MC-ATDT2x − 1.9 − S-8521B19MC-ATET2x − 2.0 − S-8521B20MC-ATFT2x − 2.1 − S-8521B21MC-ATGT2x − 2.3 − S-8521B23MC-ATIT2x −

2.5 S-8521A25MC-AXKT2x S-8521B25MC-ATKT2x S-8521C25MC-BTKT2x

2.6 − S-8521B26MC-ATLT2x −

2.7 S-8521A27MC-AXMT2x S-8521B27MC-ATMT2x S-8521C27MC-BTMT2x

2.8 S-8521A28MC-AXNT2x S-8521B28MC-ATNT2x S-8521C28MC-BTNT2x

2.9 S-8521A29MC-AXOT2x S-8521B29MC-ATOT2x S-8521C29MC-BTOT2x

3.0 S-8521A30MC-AXPT2x S-8521B30MC-ATPT2x S-8521C30MC-BTPT2x

3.1 S-8521A31MC-AXQT2x S-8521B31MC-ATQT2x S-8521C31MC-BTQT2x

3.2 S-8521A32MC-AXRT2x S-8521B32MC-ATRT2x S-8521C32MC-BTRT2x

3.3 S-8521A33MC-AXST2x S-8521B33MC-ATST2x S-8521C33MC-BTST2x

3.4 S-8521A34MC-AXTT2x S-8521B34MC-ATTT2x S-8521C34MC-BTTT2x

3.5 S-8521A35MC-AXUT2x S-8521B35MC-ATUT2x S-8521C35MC-BTUT2x

3.6 S-8521A36MC-AXVT2x S-8521B36MC-ATVT2x S-8521C36MC-BTVT2x

4.0 − S-8521B40MC-ATZT2x − 4.4 − S-8521B44MC-AUDT2x −

5.0 S-8521A50MC-AYJT2x S-8521B50MC-AUJT2x S-8521C50MC-BUJT2x

5.1 − S-8521B51MC-AUKT2x − 5.3 − S-8521B53MC-AUMT2x − 6.0 − S-8521B60MC-AUTT2x − Table 2 (2 / 2) Output voltage [V] S-8521DxxMC Series S-8521ExxMC Series S-8521FxxMC Series 1.5 − S-8521E15MC-BLAT2x S-8521F15MC-BPAT2x

1.6 S-8521D16MC-BXBT2x S-8521E16MC-BLBT2x −

1.7 − S-8521E17MC-BLCT2x −

1.8 S-8521D18MC-BXDT2x S-8521E18MC-BLDT2x S-8521F18MC-BPDT2x

1.9 − S-8521E19MC-BLET2x S-8521F19MC-BPET2x

2.0 S-8521D20MC-BXFT2x S-8521E20MC-BLFT2x −

2.1 S-8521D21MC-BXGT2x − −

2.2 S-8521D22MC-BXHT2x S-8521E22MC-BLHT2x −

2.5 S-8521D25MC-BXKT2x S-8521E25M C-BLKT2x S-8521F25MC-BPKT2x

2.7 S-8521D27MC-BXMT2x − −

2.8 S-8521D28MC-BXNT2x − −

2.9 S-8521D29MC-BXOT2x − −

3.0 S-8521D30MC-BXPT2x S-8521E30M C-BLPT2x S-8521F30MC-BPPT2x

3.1 S-8521D31MC-BXQT2x − −

3.2 S-8521D32MC-BXRT2x − S-8521F32MC-BPRT2x

3.3 S-8521D33MC-BXST2x S-8521E33M C-BLST2x S-8521F33MC-BPST2x

3.4 S-8521D34MC-BXTT2x － S-8521F34MC-BPTT2x

3.5 S-8521D35MC-BXUT2x S-8521E35MC-BLUT2x −

3.6 S-8521D36MC-BXVT2x − S-8521F36MC-BPVT2x

4.0 S-8521D40MC-BXZT2x − S-8521F40MC-BPZT2x

4.2 − S-8521E42MC-BMBT2x −

4.5 S-8521D45MC-BYET2x − −

5.0 S-8521D50MC-BYJT2x S-8521E50MC-BMJT2x S-8521F50MC-BQJT2x

5.2 S-8521D52MC-BYLT2x − −

5.3 − S-8521E53MC-BMMT2x −

5.5 S-8521D55MC-BYOT2x − S-8521F55MC-BQOT2x

Remark 1. Please contact our sales office for products with 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.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series  Pin Configuration 5 4 1 3 2 SOT-23-5 Top view Table 3 Pin No. Symbol Description

1 ON/OFF

“H”: Normal operation (Step-down operation) “L”: Stop step-down operation (All circuits stop)

2 VSS GND pin

3 VOUT Output voltage monitoring pin

4 EXT Connection pin for external transistor

5 VIN IC power supply pin

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01  Absolute Maximum Ratings Table 4 (Ta = +25°C unless otherwise specified) Item Symbol Absolute maximum rating Unit VIN pin voltage A, C, E types VIN VSS − 0.3 to VSS + 12.0 V B, D, F types V SS − 0.3 to VSS + 18.0 V VOUT pin voltage A, C, E types VOUT VSS − 0.3 to VSS + 12.0 V B, D, F types V SS − 0.3 to VSS + 18.0 V ON/OFF pin voltage A, C, E types VON/OFF VSS − 0.3 to VSS + 12.0 V B, D, F types V SS − 0.3 to VSS + 18.0 V EXT pin voltage V EXT V SS − 0.3 to VIN + 0.3 V EXT pin current I EXT ±50 mA Power dissipation P D 250 (When not mounted on board) mW 600*1 mW Operating ambient temperature T opr −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 ratings are rated values exceeding which 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 50 100 150 400 200 Power Dissipation (PD) [mW] 500 300 100 600 700 Ambient Temperature (Ta) [°C] 0 50 100 150 200 100 250 150 300 Ambient Temperature (Ta) [°C] Power Dissipation (PD) [mW] Figure 4 Power Dissipation of Package

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series  Electrical Characteristics 1. A type, B type Table 5 (Ta = +25°C unless otherwise specified) Item Symbol Conditions Min. Typ. Max. Unit Test Circuit Output voltage*1 VOUT(E) − VOUT(S) × 0.976 VOUT(S) VOUT(S) × 1.024 V 3 Input voltage V IN − A type 2.5 − 10.0 V 2 B type 2.5 − 16.0 V 2 Current consumption 1 I SS1 V OUT = VOUT(S) × 1.2 − 35 60 μA 2 Current consumption during shutdown ISSS VON/OFF = 0 V − − 0.5 μA 2 EXT pin output current IEXTH V EXT = VIN − 0.4 V S-8520/8521x15 to 24 −2.3 −4.5 − mA − S-8520/8521x25 to 34 −3.7 −7.0 − mA − S-8520/8521x35 to 44 −5.3 −9.3 − mA − S-8520/8521x45 to 54 −6.7 −11.3 − mA − S-8520/8521x55 to 60 −8.0 −13.3 − mA − IEXTL V EXT = 0.4 V S-8520/8521x15 to 24 +4.3 +8.4 − mA − S-8520/8521x25 to 34 +7.0 +13.2 − mA − S-8520/8521x35 to 44 +9.9 +17.5 − mA − S-8520/8521x45 to 54 12.6 +21.4 − mA − S-8520/8521x55 to 60 +15.0 +25.1 − mA − Line regulation ΔVOUT1 VOUT(S) ≤ 2.0 V V IN = 2.5 V to 2.94 V − 30 60 mV 3 VOUT(S) > 2.0 V V IN = VOUT(S) × 1.2 to 1.4 − 30 60 mV 3 Load regulation ΔVOUT2 Load current = 10 μA to IOUT × 1.25 − 30 60 mV 3 Output voltage temperature coefficient ΔVOUT ΔTa Ta = −40°C to +85°C − ±VOUT(S) × 5E − 5 − V/°C 3 Oscillation frequency f osc Measure waveform at EXT pin. VOUT(S) ≤ 2.4 V 144 180 216 kHz 3 VOUT(S) ≥ 2.5 V 153 180 207 kHz 3 PWM / PFM control switching duty ratio (S-8521 Series) PFMDuty No load, measure waveform at EXT pin. 15 25 40 % 3 ON/OFF pin input voltage VSH Determine oscillation at EXT pin 1.8 − − V 2 VSL Determine oscillation stop at EXT pin − − 0.3 V 2 ON/OFF pin input leakage current ISH − −0.1 − 0.1 μA 1 ISL − −0.1 − 0.1 μA 1 Soft start time t ss − 4.0 8.0 16.0 ms 3 Overload detection time (A type) tpro Time until the EXT pin reaches V IN after dropping VOUT to 0 V. 2.0 4.0 8.0 ms 2 Efficiency EFFI − − 93 − % 3 External parts Coil: Sumida Corporation CD54 (47 μH) Diode: Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type) Capacitor: Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 μF tantalum type) Transistor: Toshiba Corporation 2SA1213 Base resistance (R b): 0.68 k Ω Base capacitor (C b): 2200 pF (Ceramic type) Unless otherwise indicated, connect the recommended components to the IC. When V IN = V OUT(S) × 1.2 V (V IN = 2.5 V when VOUT(S) ≤ 2.0 V), IOUT = 120 mA, connect the ON/OFF pin to the VIN pin. *1. VOUT(S): Specified output voltage value, V OUT(E): Actual output voltage value

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 2. C type, D type Table 6 (Ta = +25°C unless otherwise specified) Item Symbol Conditions Min. Typ. Max. Unit Test Circuit Output voltage*1 VOUT(E) − VOUT(S) × 0.976 VOUT(S) VOUT(S) × 1.024 V 3 Input voltage V IN − C type 2.5 − 10.0 V 2 D type 2.5 − 16.0 V 2 Current consumption 1 I SS1 V OUT = VOUT(S) × 1.2 − 10 21 μA 2 Current consumption during shutdown ISSS VON/OFF = 0 V − − 0.5 μA 2 EXT pin output current IEXTH V EXT = VIN − 0.4 V S-8520/8521x15 to 24 −2.3 −4.5 − mA − S-8520/8521x25 to 34 −3.7 −7.0 − mA − S-8520/8521x35 to 44 −5.3 −9.3 − mA − S-8520/8521x45 to 54 −6.7 −11.3 − mA − S-8520/8521x55 to 60 −8.0 −13.3 − mA − IEXTL V EXT = 0.4 V S-8520/8521x15 to 24 +4.3 +8.4 − mA − S-8520/8521x25 to 34 +7.0 +13.2 − mA − S-8520/8521x35 to 44 +9.9 +17.5 − mA − S-8520/8521x45 to 54 +12.6 +21.4 − mA − S-8520/8521x55 to 60 +15.0 +25.1 − mA − Line regulation ΔVOUT1 VOUT(S) ≤ 2.0 V V IN = 2.5 V to 2.94 V − 30 60 mV 3 VOUT(S) > 2.0 V V IN = VOUT(S) × 1.2 to 1.4 − 30 60 mV 3 Load regulation ΔVOUT2 Load current = 10 μA to IOUT × 1.25 − 30 60 mV 3 Output voltage temperature coefficient ΔVOUT ΔTa Ta = −40°C to +85°C − ±VOUT(S) × 5E − 5 − V/°C 3 Oscillation frequency f osc Measure waveform at EXT pin. VOUT(S) ≤ 2.4 V 45 60 75 kHz 3 VOUT(S) ≥ 2.5 V 48 60 72 kHz 3 PWM / PFM control switching duty ratio (S-8521 Series) PFMDuty No load, measured waveform at EXT pin. 15 25 40 % 3 ON/OFF pin input voltage VSH Determine oscillation at EXT pin 1.8 − − V 2 VSL Determine oscillation stop at EXT pin − − 0.3 V 2 ON/OFF pin input leakage current ISH − −0.1 − 0.1 μA 1 ISL − −0.1 − 0.1 μA 1 Soft start time t ss − 6.0 12.0 24.0 ms 3 Overload detection time (C type) tpro Time until the EXT pin reaches V IN after dropping VOUT to 0 V. 7.0 14.0 28.0 ms 2 Efficiency EFFI − − 93 − % 3 External parts Coil: Sumida Corporation CD54 (47 μH) Diode: Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type) Capacitor: Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 μF tantalum type) Transistor: Toshiba Corporation 2SA1213 Base resistance (R b): 0.68 k Ω Base capacitor (C b): 2200 pF (Ceramic type) Unless otherwise indicated, connect the recommended components to the IC. When V IN = V OUT(S) × 1.2 V (V IN = 2.5 V when VOUT(S) ≤ 2.0 V), IOUT = 120 mA, connect the ON/OFF pin to the VIN pin. *1. VOUT(S): Specified output voltage value, V OUT(E): Actual output voltage value

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 3. E type, F type Table 7 (Ta = +25°C unless otherwise specified) Item Symbol Conditions Min. Typ. Max. Unit Test Circuit Output voltage*1 VOUT(E) − VOUT(S) × 0.976 VOUT(S) VOUT(S) × 1.024 V 3 Input voltage V IN − E type 2.5 − 10.0 V 2 F type 2.5 − 16.0 V 2 Current consumption 1 I SS1 V OUT = VOUT(S) × 1.2 − 60 100 μA 2 Current consumption during shutdown ISSS VON/OFF = 0 V − − 0.5 μA 2 EXT pin output current IEXTH V EXT = VIN − 0.4 V S-8520/8521x15 to 24 −2.3 −4.5 − mA − S-8520/8521x25 to 34 −3.7 −7.0 − mA − S-8520/8521x35 to 44 −5.3 −9.3 − mA − S-8520/8521x45 to 54 −6.7 −11.3 − mA − S-8520/8521x55 to 60 −8.0 −13.3 − mA − IEXTL V EXT = 0.4 V S-8520/8521x15 to 24 +4.3 +8.4 − mA − S-8520/8521x25 to 34 +7.0 +13.2 − mA − S-8520/8521x35 to 44 +9.9 +17.5 − mA − S-8520/8521x45 to 54 +12.6 +21.4 − mA − S-8520/8521x55 to 60 +15.0 +25.1 − mA − Line regulation ΔVOUT1 VOUT(S) ≤ 2.0 V V IN = 2.5 V to 2.94 V − 30 60 mV 3 VOUT(S) > 2.0 V V IN = VOUT(S) × 1.2 to 1.4 − 30 60 mV 3 Load regulation ΔVOUT2 Load current = 10 μA to IOUT × 1.25 − 30 60 mV 3 Output voltage temperature coefficient ΔVOUT ΔTa Ta = −40°C to +85°C − ±VOUT(S) × 5E − 5 − V/°C 3 Oscillation frequency f osc Measure waveform at EXT pin. VOUT(S) ≤ 2.4 V 225 300 375 kHz 3 VOUT(S) ≥ 2.5 V 240 300 360 kHz 3 PWM / PFM control switching duty ratio (S-8521 Series) PFMDuty No load, measure waveform at EXT pin. 15 25 40 % 3 ON/OFF pin input voltage VSH Determine oscillation at EXT pin 1.8 − − V 2 VSL Determine oscillation stop at EXT pin − − 0.3 V 2 ON/OFF pin input leakage current ISH − −0.1 − 0.1 μA 1 ISL − −0.1 − 0.1 μA 1 Soft start time t ss − 2.0 4.5 9.2 ms 3 Overload detection time (E type) tpro Time until the EXT pin reaches V IN after dropping VOUT to 0 V. 1.3 2.6 4.5 ms 2 Efficiency EFFI − − 90 − % 3 External parts Coil: Sumida Corporation CD54 (47 μH) Diode: Matsushita Electric Industrial Co., Ltd. MA720 (Shottky type) Capacitor: Matsushita Electric Industrial Co., Ltd. TE (16 V, 22 μF tantalum type) Transistor: Toshiba Corporation 2SA1213 Base resistance (R b): 0.68 k Ω Base capacitor (C b): 2200 pF (Ceramic type) Unless otherwise indicated, connect the recommended components to the IC. When V IN = V OUT(S) × 1.2 V (V IN = 2.5 V when VOUT(S) ≤ 2.0 V), IOUT = 120 mA, connect the ON/OFF pin to the VIN pin. *1. VOUT(S): Specified output voltage value, V OUT(E): Actual output voltage value

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series  Operation 1. Switching control method 1. 1 PWM control (S-8520 Series) The S-8520 Series is a DC-DC converter using a pulse width modulation method (PWM) and features a low current consumption. In conventional PFM DC-DC converters, pulses are ski pped when the output load current 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 from 0 to 100% corresponding to each load current. The ripple voltage generated from switching can thus be removed easily through a filter because the switching frequency is constant. And the ripple voltage will be skipped to be low current consumption when the pulse width is 0% or it is no load, input current voltage is high. 1. 2 PWM / PFM switching control (S-8521 Series) S-8521 Series is a DC-DC converter that automatically switches between a pulse width modulation method (PWM) and a pulse frequency modulation method (PFM), depending on the load current, and features low current consumption. The S-8521 Series operates under PWM control with the pulse width duty changing from 25 to 100% in a high output load current area. The S-8521 Series operates under PFM control with the pulse width duty fixed at 25%, and pulses are skipped according to the load current. The oscillation circuit thus oscillates intermittently so that the resultant lower self current consumption prevents a reduction in the efficiency at a low load current. The switching point from PWM control to PFM control depends on the external devices (coil, diode, etc.), input voltage and output voltage. The S-8521 Series is an especially highly efficient DC-DC converter at an output current around 100 μA.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 4. Overload protection circuit (A, C, E types) The A, C and E types of the S-8520/8521 Series have a built-in overload protection circuit. If the output voltage drops under the overload status, the maximum duty status (100%) continues. If this 100% duty status lasts longer than the overload detection time (t pro), the circuit keeps the EXT pin at “H” to protect the switching transistor and inductor. When the overload protecti on circuit is functioning, the soft start works in the IC for the reference voltage, and the reference voltage rises slowly from 0 V. The reference voltage and the feedback voltage obtained by dividing the output voltage are compared to each other. While the reference voltage is low, the EXT pin keeps “H” and oscillation stops. If the reference voltage rises and exceeds the feedback voltage, oscillation restarts. After oscillation is restar ted, if a load is heavy and the EXT pin keeps the “L” le vel longer than the overload detection time (t pro), the circuit operates again, and the IC enters the intermittent operation mode by repeating the action described above. Once the overload state is off, the IC restarts the normal operation. Waveforms at EXT pin Protection circuit ON [tss × 0.3] Overload detection time (tpro) Figure 10 Waveforms at EXT pin when the overload protection circuit operates 5. 100% duty cycle The S-8520/8521 Series operates with a maximum duty cycle of 100%. When using the B, D and F types products, which do not have the overload protection circuit, the switching transistor keeps ON continually to supply current to the load, even in cases where the input voltage drops to the set value of output voltage or less. The output voltage in this case is; the voltage subtracting both of the inductance’s DC resistance and the voltage drop by the switching resistor’s ON-resistance, from the input voltage. The A, C and E types that have the overload protection circuit cannot be used for continually supplying current to the load, as described above, because these types enter the intermittent operation mode by the overload protection circuit’s operation, when 100% duty lasts longer than the overload detection time (t pro).

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01  Selection of Products and External Parts 1. Method for selecting series products The S-8520/8521 Series is classified into 12 types, according to the control systems (PWM control and PWM / PFM switching control), the different oscillation frequencies, and set-up of an overload protection circuit. Please select the type for your application according to the following features. 1. 1 Control systems Two different control systems are available: PWM control system (S-8520 Series) and PWM / PFM switching control system (S-8521 Series). For applications for which the load current greatly differs between standby and operation, if the efficiency during standby is important, applying the PWM/PFM switching system (S-8321 Series) realizes high efficiency during standby. For applications for which switching noise is critical, applying the PWM control system (S-8320 Series) whereby switching frequency does not change due to load current allows the ripple voltage to be easily suppressed by using a filter. 1. 2 Oscillation frequencies Either oscillation frequency, 180 kHz (A and B types), 60 kHz (C and D types), or 300 kHz (E and F types), can be selected. The A, B, E and F types have high oscillation frequency, how ripple voltage and excellent transient response characteristics. A small inductance can be used for these types because the peak current is low when inducing the same load current. Use of small output capacitors is effective for downsizing devices. The C and D types, whereby lower oscillation frequency realizes smaller self-consumption current, are highly efficient under light loads. In particular, the D type, when combined with a PWM/PFM switching control system, drastically improves the operation efficiency when the output load current is approximately 100 mA.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 1. 3 Overload protection circuit Types are selectable the S-8520/8521 Series with the overload protection circuit (A, C and E types) or without the overload protection circuit (B, D and F types). By the S-8520/8521 Series with the overload protection circuit (A, C and E types), the switching components and inductor can be protected because the overload protecti on circuit works and is set to the intermittent mode, in case of overload or load short-circuit. But in case of supplying current to load by using 100% duty cycle, select the S-8520/8521 Series without the overload protection circuit (B, D and F types), according to the conditions of application. The operation voltage differs in 10 V (A, B and E types) or 16 V (B, D and F types) whether the overload protection circuit is available or not. Table 9 shows items for selecting the type according to the requirements of application. Select it matching the marks ( ) for your requirement. Table 9 Item S-8520 Series S-8521 Series A B C D E F A B C D E F The need of overload protection circuit       Focusing on efficiency of light load status Using with middle load current (about 200 mA) Using with large load current (about 1 A)          Focusing on downsizing external parts         Remark : Indispensable condition : Superiority of requirement : Particularly superiority of requirement

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 2. Inductor The inductance value (L value) has a strong influence on the maximum output current (I OUT) and efficiency (η). The peak current (IPK) increases by decreasing L value and the stability of the circuit improves and I OUT increases. If L value is decreased, the efficiency falls causing a decline in the current drive capacity for the switching transistor, and IOUT decreases. The loss of I PK by the switching transistor decreases by increasing L and the efficiency becomes the maximum at a certain L value. Further increasing L value decreases the efficiency due to the loss of the direct current resistance of the coil. I OUT also decreases. For the S-8520/8521 Series, increasing the inductance value, the output voltage may be unstable in some cases, depending on the conditions of the input voltage, output voltage, and the load current. Perform sufficient evaluation under the actual condition and decide an optimum inductance value. The recommended inductances are 47 μH for A, B, C, D types and 22 μH for E, F types. Be careful of the allowable inductor current when choosing an inductor. Exceeding the allowable current of the inductor causes magnetic saturation, much lower efficiency and destruction of the IC chip due to a large current. Choose an inductor so that I PK does not exceed the allowable current. I PK in continuous mode is calculated by the following equation: IPK = IOUT + (VOUT + VF*2 ) × (VIN − VOUT) 2 × fosc*1 × L × (VIN + VF*2) *1. f osc: Oscillation frequency *2. V F: Forward voltage of the diode 3. Diode Use an external diode that meets the following requirements :

• Its forward voltage is low (Schottky barrier diode is recommended).
• Its switching speed is high (50 ns max.).
• Its reverse direction voltage is higher than V IN.
• Its current rating is higher than I PK. 4. Capacitors (C IN, COUT) A capacitor for the input (C IN) improves efficiency by reducing power impedance and stabilizing the input current. Select the C IN value according to impedance of the power supply to be used. Approximately 47 to 100 μF is recommended for the capacitor depending on impedance of the power source and load current value. For a capacitor for output (C L), select a large capacitance with low ESR (Equivalent Series Resistance) for smoothing the ripple voltage. However, capacitor with extremely small ESR such as ceramic capacitor (about 0.3 Ω or less) may destabilize the output voltage, according to the conditions of input and output voltages. A tantalum electrolyte capacitor is recommended. 47 μF to 100 μF is recommended for the capacitor.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 5. External transistor Enhancement (Pch) MOS FET or bipolar (PNP) MOS FET can be used for external transistor. 5. 1 Enhancement (Pch) MOS FET type The EXT pin of the S-8520/8521 Series is capable of directly driving a Pch MOS FET with a gate capacity around 1000 pF. When using a Pch MOS FET, 2 to 3% higher efficiency is provided because its switching speed is faster and it does not cause power dissipation, compared to PNP bipolar transistors. The important parameters in selecting MOS FETs are the threshold voltage, the breakdown voltage between gate and source, the breakdown voltage between drain and source, the total gate capacity, the on-resistance, and the current ratings. The EXT pin swings from voltages between V IN to V SS. If the input voltage is low, use a MOS FET with the low threshold voltage. If the input voltage is high, use a MOS FET having the breakdown voltage between gate and source higher several volts than the input voltage. Immediately after the power-on or power-off (stopping the step-down operation), the input voltage will be applied between drain and source of the MOS FET. Use the breakdown voltage between drain and source also higher several volts than the input voltage. The total gate capacity and the on-resistance affect efficiency. Power dissipation when charging and discharging the gate capacity by switching operation affects efficiency, in the area of low load current, as the total gate capacity is larger and the input voltage is higher. Select a MOS FET with a small total gate capacity for efficiency at light load. In the area of large load current, efficiency is affected by power dissipation caused by MOS FET’s on-resistance. For efficiency at large load, select a MOS FET having as low on-resistance as possible. As for the current rating, select a MOS FET having the maximum continuous drain current rating higher than I PK. For reference, this document has the data of efficiency. TM6201 by Toyota Industries Corporation for applications with an input voltage of 10 V or less, IRF7606 by International Rectifier Corporation Japan for applications with an input voltage over 10 V (Refer to “  Reference Data”).

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01  Precautions

• Mount the external capacitors, the diode and the coil as close as possible to the IC, and secure grounding at a single location.
• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover, rush current flows at the time of a power supply injection. Because these largely depend on the coil, the capacitor and impedance of power supply used, fully check them using an actually mounted model.
• The overload protection circuit of this IC performs th e protective function by detecting the maximum duty time (100 %). In choosing the components, make sure that over currents generated by short-circuits in the load, etc., will not surpass the allowable dissipation of the switching transistor and inductor.
• Make sure that dissipation of the switching transistor (especially at a high temperature) does not exceed the allowable dissipation of the package.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit.
• SII Semiconductor Corporation claims no responsibility for any and all disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series  Application Circuits 1. External adjustment of output voltage In the S-8550/8521 Series, by adding external resistors (R A, RB) and a capacitor (C FB), the output voltage can be adjusted or be set freely in the range of 1.5 to 6.0 V, as shown in Figure 14. Temperature gradient can be given by inserting a thermistor in series to R A and RB. S-8520/8521 Series CC RA RB D1 VOUT VSS VIN OUT EXT + + Oscillation Circuit PWM control or PWM / PFM switching control unit Reference voltage source with soft start ON/OFF Figure 14 Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. The S-8520/8521 Series have an internal impedance of R 1 and R 2 between the VOUT pin and the VSS pin, as shown in Figure 14. Therefore, OUT (the output voltage) is determined by the output voltage value (V OUT) of the S-8520/8521 Series, and the ratio of the parallel resistance value of external resistance (R B) and internal resistances (R 1 + R2) of the IC, to external resistance (R A). The output voltage is expressed by the following equation: OUT = VOUT + VOUT × RA ÷ (RB //*1(R1 + R2)) *1. // shows the combined resistance in parallel. The voltage accuracy of th e OUT set by resistances (R A and R B) is not only affected by the IC’s output voltage accuracy (V OUT ±2.4 %), but also by the absolute precision of external resistances (R A and R B) in use and the absolute value deviations of internal resistances (R 1 and R2) in the IC. Let us designate the maximum deviations of the absolute value of R A and RB by RA max. and RB max., respectively, the minimum deviations by R A min. and R B min., respectively, and the maximum and minimum deviations of the absolute value of R 1 and R 2 in the IC by (R 1 + R 2) max. and (R 1 + R 2) min., respectively. Then, the minimum deviation value OUT min. and the maximum deviation value OUT max. of the OUT are expressed by the following equations: OUT min. = V

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 The voltage accuracy of the OUT cannot be made higher than the output voltage accuracy (V OUT ±2.4%) of the IC itself, without adjusting the R A and R B involved. The closer the voltage value of the output OUT and the output voltage value (V OUT) of the IC are brought to one other, the more the output voltage remains immune to deviations in the absolute accuracy of R A and RB and the absolute value of R 1 and R2 in the IC. In particular, to suppress the influence of deviations in R 1 and R2 in the IC, a major contributor to deviations in the OUT, the R A and RB must be limited to a much smaller value than that of R 1 and R2 in the IC. On the other hand, a reactive current flows through R A and R B. This reactive current must be reduced to a negligible value with respect to the load current in the actual use of the IC so that the efficiency characteristics will not be degraded. This requires that the value of R A and RB be made sufficiently large. However, too large a value (more than 1 M Ω) for the R A and R B would make the IC vulnerable to external noise. Check the influence of this value on actual equipment. There is a tradeoff between the voltage accuracy of the OUT and the reactive current. This should be taken into consideration based on the requirements of the intended application. Deviations in the absolute value of the internal resistances (R 1 and R2) in the IC vary with the output voltage of the S-8520/8521 Series, and are broadly classified as follows: Table 10 Output voltage Deviations in the absolute value of R 1 and R2 in the IC 1.5 V to 2.0 V 5.16 M Ω to 28.9 MΩ 2.1 V to 2.5 V 4.44 M Ω to 27.0 MΩ 2.6 V to 3.3 V 3.60 M Ω to 23.3 MΩ 3.4 V to 4.9 V 2.44 M Ω to 19.5 MΩ 5.0 V to 6.0 V 2.45 M Ω to 15.6 MΩ When a value of R 1 + R 2 given by the equation indicated below is taken in calculating the voltage value of the output OUT, a median voltage deviation will be obtained for the OUT. R 1 + R2 = 2 ÷ (1 ÷ maximum deviation in absolute value of R 1 and R2 + 1 ÷ minimum deviation in absolute value of R1 and R2) Moreover, add a capacitor (C C) in parallel to the external resistance (R A) in order to avoid output oscillations and other types of instability (Refer to Figure 14). Make sure that CC is larger than the value given by the following equation: CC [F] ≥ 1 ÷ (2 × π × RA [Ω] × 7.5 kHz) If a large CC value is selected, a longer soft start time than the one set up in the IC will be set. Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant.

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series  Characteristics (Typical Data) 1. Examples of major parameters characteristics (1) Current consumption (I SS1)-Input voltage (VIN) Ta = +25°C Ta = +85°C ISS1 [μA] (fosc = 60 kHz) 2 4 6 8 10 12 14 16 VIN [V] Ta = −40°C 2 4 6 8 10 12 14 16 VIN [V] ISS1 [μA] Ta = −40°C Ta = +85°C Ta = +25°C (fosc = 180 kHz) 2 4 6 8 10 12 14 16 V IN [V] ISS1 [μA] (fosc = 300 kHz) Ta = −40°CTa = +25°C Ta = +85°C (2) Oscillation frequency (f osc)-Input voltage (VIN) 2 4 6 8 10 12 14 16 V IN [V] fosc [kHz] (fosc = 60 kHz) Ta = +25°C Ta = +85°C Ta = −40°C 140 150 160 170 180 190 200 210 220 2 4 6 8 10 12 14 16 VIN [V] fosc [kHz] (fosc = 180 kHz) Ta = +25°C Ta = +85°C Ta = −40°C 240 260 280 300 320 340 360 2 4 6 8 10 12 14 16 VIN [V] fosc [kHz] (fosc = 300 kHz) Ta = −40°C Ta = +25°C Ta = +85°C

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 (3) EXT pin output current “H” (I EXTH)- Input voltage (VIN) (4) EXT pin output current “L” (I EXTL)- Input voltage (VIN) 2 4 6 8 10 12 14 16 VIN [V] IEXTH [mA] Ta = −40°C Ta = +85°C Ta = +25°C −60 −50 −40 −30 −20 −10 2 4 6 8 10 12 14 16 VIN [V] IEXTL [mA] Ta = −40°C Ta = +85°C Ta = +25°C (5) Soft start time (t SS)-Input voltage (VIN) 2 4 6 8 10 12 14 16 V IN [V] tSS [ms] (fosc = 60 kHz) Ta = −40°C Ta = +85°C Ta = +25°C 2 4 6 8 10 12 14 16 V IN [V] tSS [ms] (fosc = 180 kHz) Ta = −40°C Ta = +85°C Ta = +25°C 2 4 6 8 10 12 14 16 VIN [V] tSS [ms] (fosc = 300 kHz) Ta = +25°C Ta = +85°C Ta = −40°C

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series (6) Overload detection time (t pro)-Input voltage (VIN) 2 4 6 8 10 12 14 16 (fosc = 60 kHz) tpro [ms] Ta = −40°C VIN [V] Ta = +25°C Ta = +85°C 2 4 6 8 10 12 14 16 VIN [V] tpro [ms] Ta = −40°C Ta = +85°C Ta = +25°C (fosc = 180 kHz) 2 4 6 8 10 12 14 16 VIN [V] tpro [ms] (fosc = 300 kHz) Ta = +85°C Ta = +25°C Ta = −40°C (7) ON/OFF pin input voltage “H” (V SH)- Input voltage (VIN) (8) ON/OFF pin input voltage “L” (V SL)- Input voltage (VIN) 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2 4 6 8 10 12 14 16 VIN [V] VSH [V] Ta = −40°C Ta = +25°C Ta = +85°C 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 2 4 6 8 10 12 14 16 VIN [V] VSL [V] Ta = −40°C Ta = +85°C Ta = +25°C

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 (9) Output voltage (V OUT)-Input voltage (VIN) S-8521B30MC (Ta = +25°C) 2.98 2.99 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 2 4 6 8 10 12 14 16 VIN [V] VOUT [V] IOUT = 100 mA IOUT = 500 mA IOUT = 0.1 mA S-8521B50MC (Ta = +25°C) 4.98 4.99 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 2 4 6 8 10 12 14 16 V IN [V] VOUT [V] IOUT = 100 mA IOUT = 500 mA IOUT = 0.1 mA S-8521F33MC (Ta = +25°C) 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.36 3.37 3.38 2 4 6 8 10 12 14 16 VIN [V] VOUT [V] IOUT = 0.1 mA IOUT = 100 mA IOUT = 500 mA S-8521F50MC (Ta = +25°C) 4.97 4.98 4.99 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 2 4 6 8 10 12 14 16 VIN [V] VOUT [V] IOUT = 100 mA IOUT = 500 mA IOUT = 0.1 mA

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 2. Transient Response Characteristics 2. 1 Power-on (I OUT: no load) (1) S-8520/8521C30MC (VIN = 0 V→3.6 V) t [2 ms/div] VIN [2.5 V/div] VOUT [1 V/div] 0 V 3 V 0 V 10 V (VIN = 0 V→9.0 V) t [2 ms/div] VIN [2.5 V/div] VOUT [1 V/div] 0 V 3 V 0 V 10 V (2) S-8520/8521A30MC (VIN = 0 V→3.6 V) t [1 ms/div] VIN [2.5 V/div] VOUT [1 V/div] 0 V 3 V 0 V 10 V (VIN = 0 V→9.0 V) t [1 ms/div] VIN [2.5 V/div] VOUT [1 V/div] 0 V 3 V 0 V 10 V (3) S-8520/8521E33MC (VIN = 0 V→4.0 V) t [1 ms/div] VIN [2.5 V/div] VOUT [1 V/div] 0 V 3 V 0 V 10 V (VIN = 0 V→9.0 V) t [1 ms/div] VIN [2.5 V/div] VOUT [1 V/div] 0 V 3 V 0 V 10 V

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 2. 2 Shutdown pin response (V ON/OFF = 0 V →1.8 V, IOUT = No load) (1) S-8520/8521C30MC (VIN = 3.6 V) t [2 ms/div] OFF/ONV [1 V/div] VOUT [1 V/div] 0 V 3 V 0 V 3 V (VIN = 9.0 V) t [2 ms/div] VOUT [1 V/div] 0 V 3 V 0 V 3 V OFF/ONV [1 V/div] (2) S-8520/8521A30MC (VIN = 3.6 V) t [1 ms/div] VOUT [1 V/div] 0 V 3 V 0 V 3 V OFF/ONV [1 V/div] (VIN = 9.0 V) t [1 ms/div] VOUT [1 V/div] 0 V 3 V 0 V 3 V OFF/ONV [1 V/div] (3) S-8520/8521E33MC (VIN = 4.0 V) t [1 ms/div] VOUT [1 V/div] 0 V 3 V 0 V 3 V OFF/ONV [1 V/div] (VIN = 9.0 V) t [1 ms/div] VOUT [1 V/div] 0 V 3 V 0 V 3 V OFF/ONV [1 V/div]

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 2. 3 Supply voltage variation (V IN = 4 V→9 V, 9 V→4 V) (1) S-8520/8521C30MC (2) S-8520/8521C30MC (IOUT = 10 mA) t [0.5 ms/div] VIN [2.5 V/div] VOUT [0.2 V/div] 0 V 10 V (IOUT = 500 mA) t [0.5 ms/div] VIN [2.5 V/div] VOUT [0.2 V/div] 0 V 10 V (3) S-8520/8521A30MC (4) S-8520/8521A30MC (IOUT = 10mA) t [0.5 ms/div] VIN [2.5 V/div] VOUT [0.2 V/div] 0 V 10 V (IOUT = 500 mA) t [0.5 ms/div] VIN [2.5 V/div] VOUT [0.2 V/div] 0 V 10 V (5) S-8520/8521E33MC (6) S-8520/8521E33MC (IOUT = 10 mA) t [0.5 ms/div] VIN [2.5 V/div] VOUT [0.2 V/div] 0 V 10 V (IOUT = 500 mA) t [0.5 ms/div] VIN [2.5 V/div] VOUT [0.2 V/div] 0 V 10 V

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 2. 4 Load variation (1) S-8520/8521C30MC (VIN = 3.6 V, IOUT = 0.1 mA→500 mA) t [0.1 ms/div] IOUT VOUT [0.1 V/div] 0.1 mA 500 mA (VIN = 3.6 V, IOUT = 500 mA→0.1 mA) t [5 ms/div] IOUT VOUT [0.1 V/div] 0.1 mA 500 mA (2) S-8520/8521A30MC (VIN = 3.6 V, IOUT = 0.1 mA→500 mA) t [0.1 ms/div] IOUT VOUT [0.1 V/div] 0.1 mA 500 mA (VIN = 3.6 V, IOUT = 500 mA→0.1 mA) t [10 ms/div] IOUT VOUT [0.1 V/div] 0.1 mA 500 mA (3) S-8520/8521E33MC (VIN = 4.0 V, IOUT = 0.1 mA→500 mA) t [0.1 ms/div] IOUT VOUT [0.1 V/div] 0.1 mA 500 mA (VIN = 4.0 V, IOUT = 500 mA→0.1 mA) t [5 ms/div] IOUT VOUT [0.1 V/div] 0.1 mA 500 mA

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series  Reference Data This reference data is intended to help you select peripheral components to be externally connected to the IC. Therefore, this information provides recommendations on external components selected with a view to accommodating a wide variety of IC applications. Characteristic data is duly indicated in the table below. Table 11 External parts for efficiency data Product name Output voltage Inductor Transistor Diode Output capacitor Application S-8520B30MC 3.0 V CD105 / 47 μH TM6201 MA737 47 μF I OUT ≤ 1 A, VIN ≤ 10 V S-8520F33MC 3.3 V D62F / 22 μH MA720 22 μF IOUT ≤ 0.5 A, VIN ≤ 10 V S-8520F33MC CDH113 / 22 μH IRF7606 MA737 I OUT ≤ 1 A, VIN ≤ 16 V S-8521D30MC 3.0 V CD54 / 47 μH TM6201 MA720 47 μF × 2 IOUT ≤ 0.5 A, VIN ≤ 10 V, With equipment standby mode S-8521D30MC IRF7606 IOUT ≤ 0.5 A, VIN ≤ 16 V, With equipment standby mode S-8521B30MC CD105 / 47 μH TM6201 MA737 47 μF IOUT ≤ 1 A, VIN ≤ 10 V, With equipment standby mode S-8521B30MC IRF7606 IOUT ≤ 1 A, VIN ≤ 16 V, With equipment standby mode S-8521F33MC 3.3 V D62F / 22 μH TM6201 MA720 22 μF IOUT ≤ 0.5 A, VIN ≤ 10 V, With equipment standby mode S-8521F33MC CDH113 / 22 μH IRF7606 MA737 IOUT ≤ 1 A, VIN ≤ 16 V, With equipment standby mode S-8520B50MC 5.0 V CD54 / 47 μH TM6201 MA720 47 μF IOUT ≤ 0.5 A, VIN ≤ 10 V S-8520B50MC CD105 / 47 μH IRF7606 MA737 I OUT ≤ 1 A, VIN ≤ 16 V S-8520F50MC D62F / 22 μH TM6201 MA720 22 μF IOUT ≤ 0.5 A, VIN ≤ 10 V S-8520F50MC CDH113 / 22 μH IRF7606 MA737 I OUT ≤ 1 A, VIN ≤ 16 V S-8521D50MC CD54 / 47 μH TM6201 MA720 47 μF × 2 IOUT ≤ 0.5 A, VIN ≤ 10 V, With equipment standby mode S-8521D50MC CD105 / 47 μH IRF7606 MA737 IOUT ≤ 1 A, VIN ≤ 16 V, With equipment standby mode S-8521B50MC CD54 / 47 μH TM6201 MA720 47 μF IOUT ≤ 0.5 A, VIN ≤ 10 V, With equipment standby mode S-8521B50MC CD105 / 47 μH IRF7606 MA737 IOUT ≤ 1 A, VIN ≤ 16 V, With equipment standby mode S-8521F50MC D62F / 22 μH TM6201 MA720 22 μF IOUT ≤ 0.5 A, VIN ≤ 10 V, With equipment standby mode S-8521F50MC CDH113 / 22 μH IRF7606 MA737 IOUT ≤ 1 A, VIN ≤ 16 V, With equipment standby mode

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 Table 12 External parts for Ripple data Product name Output voltage Inductor Transistor R b C b Diode Output capacitor S-8520D30MC

3.0 V CD105 / 47 μH 2SA1213 680 Ω 2200 pF MA720

47 μF × 2 S-8521D30MC S-8520B30MC 22 μF × 2 S-8521B30MC S-8520F33MC 3.3 V CDH113 / 22 μH IRF7606 − − MA737 22 μF S-8521F33MC − − S-8520D50MC 5.0 V CD105 / 47 μH 2SA1213 680 Ω 2200 pF MA720 47 μF × 2 S-8521D50MC S-8520B50MC 22 μF × 2 S-8521B50MC S-8520F50MC CDH113 / 22 μH IRF7606 − − MA737 22 μF S-8521F50MC − − Table 13 Performance Data Component Product name Manufacturer name “L” value DC resistance Maximum allowable current Diameter Height Inductor CD54 Sumida Corporation 47 μH 0.37 Ω 0.72 A 5.8 mm 4.5 mm CD105 0.17 Ω 1.28 A 10.0 mm 5.4 mm CDH113 22 μH 0.09 Ω 1.44 A 11.0 mm 3.7 mm Diode MA720 Matsushita Electric Industrial Co., Ltd. Forward current 500 mA (at V F = 0.55 V) MA737 Forward current 1.5 A (at V F = 0.5 V) Output capacity F93 Nichicon Corporation − TE Matsushita Electric Industrial Co., Ltd. − External transistor (Bipolar PNP) 2SA1213 Toshiba Corporation V CEO: 50 V max., IC: −2 A max., hFE: 120 to 240, SOT-89-3 package External transistor (MOS FET) TM6201 Toyota Industries Corporation V GS: 12 V max., ID: −2 A max., Vth: －0.7 V min., Ciss: 320 pF typ., Ron: 0.25 Ω max. (VGS = −4.5 V), SOT-89-3 package IRF7606 International Rectifier Corporation VGS: 20 V max., ID: −2.4 A max., Vth: −1 V min., Ciss: 470 pF typ., Ron: 0.15 Ω max. (VGS = −4.5 V), Micro 8 package

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series 1. Efficiency Characteristics: Output current (I OUT)-Efficiency (EFFI) (1) S-8520B30MC (CD105 / 47 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 3.6 V VIN = 9.0 V (2) S-8520F33MC (D62F / 22 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 9 V VIN = 6 V VIN = 4 V (CDH113 / 22 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 14 V VIN = 9 V VIN = 6 V VIN = 4 V (3) S-8521D30MC (CD54 / 47 μH, TM6201) 100 0.01 0.1 1 10 100 1000 IOUT [mA] EFFI [%] VIN = 3.6 V VIN = 9.0 V (CD54 / 47 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 3.6 V VIN = 9.0 V (4) S-8521B30MC (CD105 / 47 μH, TM6201) 100 0.01 0.1 1 10 100 1000 IOUT [mA] EFFI [%] VIN = 3.6 V VIN = 9.0 V (CD105 / 47 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 3.6 V VIN = 9.0 V

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 (5) S-8521F33MC (D62F / 22 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 9 V VIN = 6 V VIN = 4 V (CDH113 / 22 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 14 V VIN = 9 V VIN = 6 V VIN = 4 V (6) S-8520B50MC (CD54 / 47 μH, TM6201) 100 0.01 0.1 1 10 100 1000 IOUT [mA] EFFI [%] VIN = 6.0 V VIN = 9.0 V (CD105 / 47 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 IOUT [mA] EFFI [%] VIN = 14 V VIN = 9 V VIN = 6 V (7) S-8520F50MC (D62F / 22 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 9 V VIN = 6 V (CDH113 / 22 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 14 V VIN = 9 V VIN = 6 V (8) S-8521D50MC (CD54 / 47 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 6.0 V VIN = 9.0 V (CD105 / 47 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 IOUT [mA] EFFI [%] VIN = 14 V VIN = 9 V VIN = 6 V

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series (9) S-8521B50MC (CD54 / 47 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 6.0 V VIN = 9.0 V (CD105 / 47 μH, IRF7606) 100 0.01 0.1 1 10 100 1000 IOUT [mA] EFFI [%] VIN = 9 V VIN = 6 V VIN = 14 V (10) S-8521F50MC (D62F / 22 μH, TM6201) 100 0.01 0.1 1 10 100 1000 I OUT [mA] EFFI [%] VIN = 9 V VIN = 6 V (CDH113 / 22 μH, IRF7606) 100 I OUT [mA] EFFI [%] VIN = 14 V VIN = 9 V VIN = 6 V 0.01 0.1 1 10 100 1000

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 2. Ripple Voltage Characteristics: Ripple voltage (V rip)-Input voltage (V IN) (L: CD105 / 47 μH, Tr: 2SA1213, SBD: MA720) (1) S-8520D30MC (2) S-8521D30MC (COUT = 47 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 VIN [V] Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA (COUT = 47 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 0.1 mA IOUT = 500 mA IOUT = 100 mA (3) S-8520B30MC (4) S-8521B30MC (COUT = 22 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 VIN [V] Vrip [mV] IOUT = 0.1 mA IOUT = 100 mA IOUT = 500 mA (COUT = 22 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 0.1 mA IOUT = 500 mA IOUT = 100 mA (5) S-8520F33MC (6) S-8521F33MC (COUT = 22 μF) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA (COUT = 22 μF) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA (7) S-8520D50MC (8) S-8521D50MC (COUT = 47 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 0.1 mA IOUT = 100 mA IOUT = 500 mA (COUT = 47 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 VIN [V] Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.9.0_01 S-8520/8521 Series (9) S-8520B50MC (10) S-8521B50MC (COUT = 22 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA (COUT = 22 μF×2) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 0.1 mA IOUT = 500 mA IOUT = 100 mA (11) S-8520F50MC (12) S-8521F50MC (COUT = 22 μF) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 500 mA IOUT = 100 mA IOUT = 0.1 mA (COUT = 22 μF) 120 160 200 240 2 4 6 8 10 12 14 16 V IN [V] Vrip [mV] IOUT = 0.1 mA IOUT = 100 mA IOUT = 500 mA

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8520/8521 Series Rev.9.0_01 3. PWM / PFM switching characteristics: Input voltage (V IN)-Output current (IOUT) (1) S-8521D30MC (2) S-8521B30MC 1 10 100 1000 IOUT [mA] VIN [V] 1 10 100 1000 I OUT [mA] VIN [V] (3) S-8521F33MC (4) S-8521D50MC 1 10 100 1000 I OUT [mA] VIN [V] 1 10 100 1000 IOUT [mA] VIN [V] (5) S-8521B50MC (6) S-8521F50MC 1 10 100 1000 I OUT [mA] VIN [V] 1 10 100 1000 I OUT [mA] VIN [V]

/X4E/X6F/X2E /X54/X49/X54/X4C/X45 /X53/X43/X41/X4C/X45 /X55/X4E/X49/X54 /X53/X49/X49/X20/X53/X65/X6D/X69/X63/X6F/X6E/X64/X75/X63/X74/X6F/X72/X20/X43/X6F/X72/X70/X6F/X72/X61/X74/X69/X6F/X6E /X32/X2E/X39/XB1/X30/X2E/X32 /X31/X2E/X39/XB1/X30/X2E/X32 /X30/X2E/X39/X35/XB1/X30/X2E/X31 /X30/X2E/X34/XB1/X30/X2E/X31 /X30/X2E/X31/X36/X20/X2B/X30/X2E/X31 /X20/X2D/X30/X2E/X30/X36/X31/X32/X33 /X34/X35 /X4E/X6F/X2E/X20/X4D/X50/X30/X30/X35/X2D/X41/X2D/X50/X2D/X53/X44/X2D/X31/X2E/X32 /X4D/X50/X30/X30/X35/X2D/X41/X2D/X50/X2D/X53/X44/X2D/X31/X2E/X32 /X53/X4F/X54/X32/X33/X35/X2D/X41/X2D/X50/X4B/X47/X20/X44/X69/X6D/X65/X6E/X73/X69/X6F/X6E/X73 /X6D/X6D

/X4E/X6F/X2E /X54/X49/X54/X4C/X45 /X53/X43/X41/X4C/X45 /X55/X4E/X49/X54 /X53/X49/X49/X20/X53/X65/X6D/X69/X63/X6F/X6E/X64/X75/X63/X74/X6F/X72/X20/X43/X6F/X72/X70/X6F/X72/X61/X74/X69/X6F/X6E /XF8/X31/X2E/X35 /X2B/X30/X2E/X31 /X2D/X30 /X32/X2E/X30/XB1/X30/X2E/X30/X35 /XF8/X31/X2E/X30 /X2B/X30/X2E/X32 /X2D/X30 /X34/X2E/X30/XB1/X30/X2E/X31 /X31/X2E/X34/XB1/X30/X2E/X32 /X30/X2E/X32/X35/XB1/X30/X2E/X31 /X33/X2E/X32/XB1/X30/X2E/X32 /X31/X32/X33 /X34/X35 /X4E/X6F/X2E/X20/X4D/X50/X30/X30/X35/X2D/X41/X2D/X43/X2D/X53/X44/X2D/X32/X2E/X31 /X4D/X50/X30/X30/X35/X2D/X41/X2D/X43/X2D/X53/X44/X2D/X32/X2E/X31 /X53/X4F/X54/X32/X33/X35/X2D/X41/X2D/X43/X61/X72/X72/X69/X65/X72/X20/X54/X61/X70/X65 /X46/X65/X65/X64/X20/X64/X69/X72/X65/X63/X74/X69/X6F/X6E /X34/X2E/X30/XB1/X30/X2E/X31/X28/X31/X30/X20/X70/X69/X74/X63/X68/X65/X73/X3A/X34/X30/X2E/X30/XB1/X30/X2E/X32/X29 /X6D/X6D

/X4E/X6F/X2E /X54/X49/X54/X4C/X45 /X53/X43/X41/X4C/X45 /X55/X4E/X49/X54 /X53/X49/X49/X20/X53/X65/X6D/X69/X63/X6F/X6E/X64/X75/X63/X74/X6F/X72/X20/X43/X6F/X72/X70/X6F/X72/X61/X74/X69/X6F/X6E /X31/X32/X2E/X35/X6D/X61/X78/X2E /X39/X2E/X30/XB1/X30/X2E/X33 /XF8/X31/X33/XB1/X30/X2E/X32 /X28/X36/X30/XB0/X29 /X28/X36/X30/XB0/X29 /X51/X54/X59/X2E /X33/X2C/X30/X30/X30 /X4E/X6F/X2E/X20/X4D/X50/X30/X30/X35/X2D/X41/X2D/X52/X2D/X53/X44/X2D/X31/X2E/X31 /X4D/X50/X30/X30/X35/X2D/X41/X2D/X52/X2D/X53/X44/X2D/X31/X2E/X31 /X53/X4F/X54/X32/X33/X35/X2D/X41/X2D/X52/X65/X65/X6C /X45/X6E/X6C/X61/X72/X67/X65/X64/X20/X64/X72/X61/X77/X69/X6E/X67/X20/X69/X6E/X20/X74/X68/X65/X20/X63/X65/X6E/X74/X72/X61/X6C/X20/X70/X61/X72/X74 /X6D/X6D

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