S1170

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www.sii-ic.com HIGH RIPPLE-REJECTION AND LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR © Seiko Instruments Inc., 2003-2015 Rev.4.1_00 Seiko Instruments Inc. 1 The S-1170 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output voltage, and low current consumption developed based on CMOS technology. A built-in low on-resistance transistor provides a low dropout voltage and large output current, a built-in overcurrent protection circuit prevents the load current from exceeding the current capacity of the output transistor, and a built-in thermal shutdown circuit prevents damage caused by the heat. An ON/OFF circuit ensures a long battery life. Compared with the voltage regulators using the convent ional CMOS technology, a larger variety of capacitors are available, includi ng small ceramic capacitors. Small SOT-89-5 and 6-Pin HSON(A) packages realize high-density mounting.  Features

• Output voltage: 1.5 V to 5.5 V, selectable in 0.1 V step
• Output voltage accuracy: ±1.0%
• Dropout voltage: 120 mV typ. (3.0 V output product, IOUT = 300 mA)
• Current consumption: During operation: 80 μA typ., 160 μA max. During power-off: 0.1 μA typ., 1.0 μA max.
• Output current: Possible to output 800 mA (V IN ≥ VOUT(S) + 1.0 V)*1
• Input and output capacitors: A ceramic capacitor of 4.7 μF or more can be used.
• Ripple rejection: 70 dB typ. (f = 1.0 kHz)
• Built-in overcurrent protection circuit: Limits overcurrent of output transistor.
• Built-in thermal shutdown circuit: Prevents damage caused by heat.
• Built-in ON/OFF circuit: Ensures long battery life.
• Operation temperature range: Ta = −40°C to +85°C
• Lead-free, Sn 100%, halogen-free*2 *1. Attention should be paid to the power dissipation of the package when the output current is large. *2. Refer to “ Product Name Structure” for details.  Applications
• Constant-voltage power supply for DVD and CD-ROM drive
• Constant-voltage power supply for battery-powered device
• Constant-voltage power supply for personal communication device
• Constant-voltage power supply for notebook PC  Packages
• SOT-89-5
• 6-Pin HSON(A)

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 2  Block Diagram VIN VSS VOUT Overcurrent protection circuit Thermal shutdown circuit Reference voltage circuit ON/OFF *1. Parasitic diode ON/OFF circuit Figure 1

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 3  Product Name Structure Users can select the product type, output voltage, and package type for the S-1170 Series. Refer to “1. Product name” regarding the contents of product name, “2. Packages ” regarding the package drawings, “3. Product name list ” regarding details of the product name. 1. Product name (1) SOT-89-5 S-1170 x xx UC − xxx TF x Output voltage 15 to 55 (E.g., when the output voltage is 1.5 V, it is expressed as 15. Package name (abbreviation) UC: SOT-89-5 Environmental code U: Lead-free (Sn 100%), halogen-free G: Lead-free (for details, please contact our sales office) Product type A: ON/OFF pin negative logic B: ON/OFF pin positive logic IC direction in tape specifications Product name (abbreviation) *1. Refer to the tape drawing. *2. Refer to the product name list. *3. Refer to “3. ON/OFF pin” in “ Operation”.

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 4 (2) 6-Pin HSON(A) S-1170 x xx PD − xxx TF x Output voltage 15 to 55 (E.g., when the output voltage is 1.5 V, it is expressed as 15. Package name (abbreviation) PD: 6-Pin HSON(A) Environmental code S: Lead-free, halogen-free G: Lead-free (for details, please contact our sales office) Product type A: ON/OFF pin negative logic B: ON/OFF pin positive logic IC direction in tape specifications Product name (abbreviation) *1. Refer to the tape drawing. *2. Refer to the product name list. *3. Refer to “3. ON/OFF pin” in “ Operation”. 2. Packages Package Name Drawing Code Package Tape Reel SOT-89-5 UP005-A-P-SD UP005-A-C-SD UP005-A-R-SD 6-Pin HSON(A) PD006-A-P-SD PD006-A-C-SD PD006-A-R-SD

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 5 3. Product name list Table 1 Output Voltage SOT-89-5 6-Pin HSON(A) 1.5 V ±1.0% S-1170B15UC-OTATFx S-1170B15PD-OTATFz 1.6 V ±1.0% S-1170B16UC-OTBTFx S-1170B16PD-OTBTFz 1.7 V ±1.0% S-1170B17UC-OTCTFx S-1170B17PD-OTCTFz 1.8 V ±1.0% S-1170B18UC-OTDTFx S-1170B18PD-OTDTFz 1.9 V ±1.0% S-1170B19UC-OTETFx S-1170B19PD-OTETFz 2.0 V ±1.0% S-1170B20UC-OTFTFx S-1170B20PD-OTFTFz 2.1 V ±1.0% S-1170B21UC-OTGTFx S-1170B21PD-OTGTFz 2.2 V ±1.0% S-1170B22UC-OTHTFx S-1170B22PD-OTHTFz 2.3 V ±1.0% S-1170B23UC-OTITFx S-1170B23PD-OTITFz 2.4 V ±1.0% S-1170B24UC-OTJTFx S-1170B24PD-OTJTFz 2.5 V ±1.0% S-1170B25UC-OTKTFx S-1170B25PD-OTKTFz 2.6 V ±1.0% S-1170B26UC-OTLTFx S-1170B26PD-OTLTFz 2.7 V ±1.0% S-1170B27UC-OTMTFx S-1170B27PD-OTMTFz 2.8 V ±1.0% S-1170B28UC-OTNTFx S-1170B28PD-OTNTFz 2.9 V ±1.0% S-1170B29UC-OTOTFx S-1170B29PD-OTOTFz 3.0 V ±1.0% S-1170B30UC-OTPTFx S-1170B30PD-OTPTFz 3.1 V ±1.0% S-1170B31UC-OTQTFx S-1170B31PD-OTQTFz 3.2 V ±1.0% S-1170B32UC-OTRTFx S-1170B32PD-OTRTFz 3.3 V ±1.0% S-1170B33UC-OTSTFx S-1170B33PD-OTSTFz 3.4 V ±1.0% S-1170B34UC-OTTTFx S-1170B34PD-OTTTFz 3.5 V ±1.0% S-1170B35UC-OTUTFx S-1170B35PD-OTUTFz 3.6 V ±1.0% S-1170B36UC-OTVTFx S-1170B36PD-OTVTFz 3.7 V ±1.0% S-1170B37UC-OTWTFx S-1170B37PD-OTWTFz 3.8 V ±1.0% S-1170B38UC-OTXTFx S-1170B38PD-OTXTFz 3.9 V ±1.0% S-1170B39UC-OTYTFx S-1170B39PD-OTYTFz 4.0 V ±1.0% S-1170B40UC-OTZTFx S-1170B40PD-OTZTFz 4.1 V ±1.0% S-1170B41UC-OUATFx S-1170B41PD-OUATFz 4.2 V ±1.0% S-1170B42UC-OUBTFx S-1170B42PD-OUBTFz 4.3 V ±1.0% S-1170B43UC-OUCTFx S-1170B43PD-OUCTFz 4.4 V ±1.0% S-1170B44UC-OUDTFx S-1170B44PD-OUDTFz 4.5 V ±1.0% S-1170B45UC-OUETFx S-1170B45PD-OUETFz 4.6 V ±1.0% S-1170B46UC-OUFTFx S-1170B46PD-OUFTFz 4.7 V ±1.0% S-1170B47UC-OUGTFx S-1170B47PD-OUGTFz 4.8 V ±1.0% S-1170B48UC-OUHTFx S-1170B48PD-OUHTFz 4.9 V ±1.0% S-1170B49UC-OUITFx S-1170B49PD-OUITFz 5.0 V ±1.0% S-1170B50UC-OUJTFx S-1170B50PD-OUJTFz 5.1 V ±1.0% S-1170B51UC-OUKTFx S-1170B51PD-OUKTFz 5.2 V ±1.0% S-1170B52UC-OULTFx S-1170B52PD-OULTFz 5.3 V ±1.0% S-1170B53UC-OUMTFx S-1170B53PD-OUMTFz 5.4 V ±1.0% S-1170B54UC-OUNTFx S-1170B54PD-OUNTFz 5.5 V ±1.0% S-1170B55UC-OUOTFx S-1170B55PD-OUOTFz Remark 1. Please contact our sales office for products with an output voltage other than those specified above or type A products. 2. x: G or U z: G or S 3. Please select products of environmental code = U for Sn 100%, halogen-free products.

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 6  Pin Configurations 5 4 1 3 2 SOT-89-5 Top view Table 2 Pin No. Symbol Description

1 ON/OFF ON/OFF pin

2 VSS GND pin

3 NC*1 No connection

4 VIN Input voltage pin

5 VOUT Output voltage pin

*1. The NC pin is electrically open. The NC pin can be connected to VIN pin or VSS pin. Figure 2 *1. Connect the exposed thermal die pad at shadowed area to the board, and set electric potential open or VSS. However, do not use it as the function of electrode. *2. Be careful of the contact with other wires because the pinch lead has the same electric potential as VSS. 6-Pin HSON(A) Top view 6 5 4 1 2 3 Bottom view 1 2 3 6 5 4 Table 3 Pin No. Symbol Description

1 VOUT*1 Output voltage pin

2 VOUT*1 Output voltage pin

3 ON/OFF ON/OFF pin

4 VSS GND pin

5 VIN*2 Input voltage pin

6 VIN*2 Input voltage pin

*1. Short pins 1 and 2. *2. Short pins 5 and 6. Figure 3

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 7  Absolute Maximum Ratings Table 4 (Ta = 25°C unless otherwise specified) Parameter Symbol Absolute Maximum Rating Unit Input voltage VIN VSS − 0.3 to VSS + 7 V VON/OFF VSS − 0.3 to VIN + 0.3 V Output voltage VOUT VSS − 0.3 to VIN + 0.3 V Power dissipation SOT-89-5 PD 1000 *1 mW 6-Pin HSON(A) Operation ambient temperature T opr −40 to +85 °C Storage temperature Tstg −40 to +125 °C *1. At mounted on printed circuit board [Mounted board] (1) Board size : 40 mm ×40 mm×t1.6 mm (2) Cu wiring shear : 180 % at both sides Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Power Dissipation PD (mW) Ambient Temperature Ta (°C) 0 50 100 150 1200 800 400 SOT-89-5 6-Pin HSON(A) 1000 600 200 Figure 4 Power Dissipation of Package (Mounted on Printed Circuit Board) Caution Thermal shutdown circuit may operate when junction temperature is 150 °C.

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 8  Electrical Characteristics Table 5 (Ta = 25°C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Test Circuit Output voltage*1 VOUT(E) V IN = VOUT(S) + 1.0 V, IOUT = 100 mA VOUT(S) × 0.99 VOUT(S) VOUT(S) × 1.01 V 1 Output current*2 IOUT V IN ≥ VOUT(S) + 1.0 V 800*5 ⎯ ⎯ mA 3 Dropout voltage*3 Vdrop I OUT = 300 mA VOUT(S) = 1.5 V ⎯ 0.35 0.45 V 1 VOUT(S) = 1.6 V ⎯ 0.30 0.35 V 1 VOUT(S) = 1.7 V ⎯ 0.25 0.30 V 1 1.8 V ≤ VOUT(S) ≤ 2.0 V ⎯ 0.20 0.26 V 1 2.1 V ≤ VOUT(S) ≤ 2.9 V ⎯ 0.15 0.22 V 1 3.0 V ≤ VOUT(S) ≤ 5.5 V ⎯ 0.12 0.18 V 1 Line regulation ΔVOUT1 VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V, IOUT = 100 mA ⎯ 0.05 0.3 %/V 1 ΔVIN•VOUT Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V, 1.0 mA ≤ IOUT ≤ 300 mA ⎯ 30 100 mV 1 Output voltage temperature coefficient*4 ΔVOUT VIN = VOUT(S) + 1.0 V, IOUT = 10 mA, / °C 1 ΔTa•VOUT Current consumption during operation ISS1 VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON, no load ⎯ 80 160 μA2 Current consumption during power-off I SS2 VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF, no load ⎯ 0.1 1.0 μA2 Input voltage VIN ⎯ 2.0 ⎯ 6.5 V ⎯ ON/OFF pin input voltage “H” V SH V IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ 1.5 ⎯ ⎯ V 4 ON/OFF pin input voltage “L” V SL V IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ ⎯ ⎯ 0.3 V 4 ON/OFF pin input current “H” I SH V IN = 6.5 V, VON/OFF = 6.5 V −0.1 ⎯ 0.1 μA4 ON/OFF pin input current “L” I SL V IN = 6.5 V, VON/OFF = 0 V −0.1 ⎯ 0.1 μA4 Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz, ΔVrip = 0.5 Vrms, IOUT = 100 mA 1.5 V ≤ VOUT(S) ≤ 3.0 V ⎯ 70 ⎯ dB 5 3.1 V ≤ VOUT(S) ≤ 5.5 V ⎯ 65 ⎯ dB 5 Short-circuit current I short VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON, VOUT = 0 V ⎯ 350 ⎯ mA 3 Thermal shutdown detection temperature T SD Junction temperature ⎯ 150 ⎯ °C ⎯ Thermal shutdown release temperature T SR Junction temperature ⎯ 120 ⎯ °C ⎯

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 9 *1. VOUT(S): Set output voltage VOUT(E): Actual output voltage Output voltage when fixing I OUT (= 100 mA) and inputting VOUT(S) + 1.0 V *2. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current. *3. Vdrop = VIN1 − (VOUT3 × 0.98) V OUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 300 mA. VIN1 is the input voltage at which t he output voltage bec omes 98% of V OUT3 after gradually decreasing the input voltage. *4. A change in the temperature of the output voltage [mV/°C] is calculated using the following equation. ΔVOUT ΔTa []mV/°C *1 = VOUT(S) []V *2 × ΔVOUT ΔTa • VOUT []ppm/°C *3 ÷ 1000 *1. Change in temperature of output voltage *2. Set output voltage *3. Output voltage temperature coefficient *5. The output current can be at least this value. Due to restrictions on the package power dissipation, this value may not be sati sfied. Attention should be paid to the power dissipation of the package when the output current is large. This specification is guaranteed by design.

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 11  Standard Circuit ON/OFF VSS VOUTVIN CIN *1 CL Input Output GNDSingle GND *1. CIN is a capacitor for stabilizing the input. *2. A ceramic capacitor of 4.7 μF or more can be used for CL. Figure 10 Caution The above connection diagram and constant will not guarantee successful operation. Perform thorough evaluation using the actual application to set the constant.  Condition of Application Input capacitor (CIN): 4.7 μF or more Output capacitor (CL): 4.7 μF or more ESR of output capacitor: 0.5 Ω or less Caution Generally a series regulator may cause o scillation, depending on the selection of external parts. Check that no oscillation occurs with the application using the above capacitor.  Selection of Input and Output Capacitors (CIN, CL) The S-1170 Series requires an output capacitor between the VOUT pin and the VSS pin for phase compensation. A ceramic capacit or with a capacitance of 4.7 μF or more provides a stable operation in all temperature ranges. When using an OS capacitor, a tantalum capacitor , or an aluminum electrolytic capacitor, the capacitance must be 4.7 μF or more, and the ESR must be 0.5 Ω or less. The output overshoot and undershoot values, which are transient response characteristics, vary depending on the output capacitor value. The required capacit ance value for the input capacitor differs depending on the application. The recommended value for an application is C IN ≥ 4.7 μF and CL ≥ 4.7 μF, however, perform a thorough evaluation using the actual device, including evaluation of temperature characteristics.

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 12  Explanation of Terms 1. Low dropout voltage regulator This voltage regulator has the low dropout voltage due to its built-in low on-resistance transistor. 2. Low ESR A capacitor whose ESR (Equivalent Series Resistanc e) is low. The S-1170 Series enables use of a low ESR capacitor, such as a ceramic capac itor, for the output-side capacitor (C L). A capacitor whose ESR is 0.5 Ω or less can be used. 3. Output voltage (VOUT) The accuracy of the out put voltage is ensured at ± 1.0% under the specified c onditions of fixed input voltage*1, fixed output current, and fixed temperature. *1. Differs depending the product. Caution If the above conditions change, the output voltage value may vary and exceed the accuracy range of the output voltage. Refer to “  Electrical Characteristics” and “  Characteristics (Typical Data)” for details. 4. Line regulation  ΔVOUT1 ΔVIN • VOUT Indicates the dependency of the output voltage on the input voltage. That is, the values show how much the output voltage changes due to a change in the input voltage with the output current remaining unchanged. 5. Load regulation (ΔV OUT2) Indicates the dependency of the output voltage on the output current. That is, the values show how much the output voltage changes due to a change in the output current with the input voltage remaining unchanged. 6. Dropout voltage (Vdrop) Indicates the difference between input voltage (V IN1) and the output voltage when; decreasing input voltage (VIN) gradually until the output voltage has dropped out to the value of 98% of output voltage (VOUT3), which is at VIN = VOUT(S) + 1.0 V. Vdrop = VIN1 − (VOUT3 × 0.98)

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 13 7. Output voltage temperature coefficient  ΔVOUT ΔTa • VOUT The shaded area in Figure 11 is the range where VOUT varies in the operation temperature range when the output voltage temperature coefficient is ±150 ppm/°C. VOUT(E) Example of S-1170B28 typ. product −40 +25 +0.42 mV/°C VOUT [V] *1. V OUT(E) is the value of the output voltage measured at Ta = +25°C. +85 Ta [°C] −0.42 mV/°C Figure 11 A change in the temperature of the output voltage [mV/°C] is calculated using the following equation. ΔVOUT ΔTa []mV/°C *1 = VOUT(S) []V *2 × ΔVOUT ΔTa • VOUT []ppm/°C *3 ÷ 1000 *1. Change in temperature of output voltage *2. Set output voltage *3. Output voltage temperature coefficient

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 15 3. ON/OFF pin This pin starts and stops the regulator. When the ON/OFF pin is set to OFF level, the entir e internal circuit stops operating, and the built-in P-channel MOS FET output transistor between the VI N pin and the VOUT pin is turned off, reducing current consumption significantly . The VOUT pin becomes the V SS level due to the internally divided resistance of several hundreds kΩ between the VOUT pin and the VSS pin. The structure of the ON/OFF pin is as shown in Figure 13. Since the ON/OFF pin is neither pulled down nor pulled up internally, do not use it in the floating status. In addition, note that the current consumption increases if a voltage of 0.3 V to V IN − 0.3 V is applied to the ON/OFF pin. When not using the ON/OFF pin, connect it to the VSS pin in the product A type, and connect it to the VIN pin in B type. Table 6 Product Type ON/OFF Pin Internal Circuit VOUT Pin Voltage Current Consumption A “L”: ON Operate Set value ISS1 A “H”: OFF Stop V SS level ISS2 B “L”: OFF Stop V SS level ISS2 B “H”: ON Operate Set value ISS1 VSS ON/OFF VIN Figure 13

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 16 4. Thermal shutdown circuit The S-1170 Series implements a thermal shutdown ci rcuit to protect the device from damage due to overheating. When the junction temperature rises to 150 °C (typ.), the thermal shutdown circuit operates and the regulator operation stops. When t he junction temperature drops to 120 °C (typ.), the thermal shutdown circuit is released and the regulator operation resumes. If the thermal shutdown circuit starts operating due to self-heating, the regulat or operation stops and the output voltage falls. When the regulator operati on has stopped, no self-heat is generated and the temperature of the IC is lowered. When the tem perature has dropped, the thermal shutdown circuit is released, the regulator operation resumes, and self-heat is generated agai n. By repeating this procedure, the output voltage waveform forms pulses. Stop or restart of regulati on continues unl ess decreasing either or both of the input voltage and the output current in order to reduce the internal power consumption, or decreasing the ambient temperature. Table 7 Thermal Shutdown Circuit VOUT Pin Voltage Operating: 150°C (typ.) VSS level Released: 120°C (typ.) Set value

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 17  Precautions

• Wiring patterns for the VIN pin, the VOUT pi n and GND should be designed so that the impedance is low. When mounting an output capacitor between the VOUT pin and the VSS pin (C L) and a capacitor for stabilizing the input betw een the VIN pin and the VSS pin (C IN), the distance from the capacitors to these pins should be as short as possible.
• Note that generally the output voltage may increase w hen a series regulator is used at low load current (1.0 mA or less).
• Note that the output voltage may increase due to t he leakage current from an out put driver even if the ON/OFF pin is at OFF level when a series regulator is used at high temperature.
• Generally a series regulator may cause oscillati on, depending on the selection of external parts. The following conditions are recommended for the S-1170 Series. However, be sure to perform sufficient evaluation under the actual usage conditions for se lection, including evaluation of temperature characteristics. Input capacitor (C IN): 4.7 μF or more Output capacitor (C L): 4.7 μF or more Equivalent series resistance (ESR): 0.5 Ω or less
• The voltage regulator may oscillate when the im pedance of the power supply is high and the input capacitance is small or an input capacitor is not connected.
• Overshoot may occur in the output voltage momentarily if the voltage is rapidly raised at power-on or when the power supply fluctuates. Sufficiently evaluat e the output voltage at power-on with the actual device.
• The application conditions for the input voltage, the output voltage, and the load current should not exceed the package power dissipation.
• Do not apply an electrostatic discharge to this IC that exceeds the performanc e ratings of the built-in electrostatic protection circuit.
• In determining the output current, attention should be paid to the output current value specified in Table 5 in “ Electrical Characteristics” and footnote *5 of the table.
• SII 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.

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 18 „ Characteristics (Typical Data) (1) Output voltage vs. Output current (when load current increases) S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) VOUT [V] 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 200 400 600 800 1000 1200 VIN = 2.0 V 2.5 V 6.5 V VOUT [V] 3.5 3.0 2.5 2.0 1.5 1.0 0.5 400 600 800 1000 200 0 1200 VIN = 3.5 V 4.0 V 6.5 V IOUT [mA] IOUT [mA] S-1170B50 (Ta = 25°C) VOUT [V] 400 600 8002000 1000 1200 VIN = 5.5 V 6.0 V 6.5 V IOUT [mA] Remark In determining the output current, attention should be paid to the following. 1. The minimum output current value and footnote *5 in Table 5 in “„ Electrical Characteristics” 2. The package power dissipation (2) Output voltage vs. Input voltage S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) VOUT [V] 1.6 1.5 1.4 1.3 1.2 1.1 1.0 3.53.0 2.5 2.0 1.5 1.0 IOUT = 1 mA 10 mA 100 mA 300 mA VOUT [V] 3.1 3.0 2.9 2.8 2.7 2.6 2.5 IOUT = 1 mA 10 mA 100 mA 300 mA VIN [V] VIN [V] S-1170B50 (Ta = 25°C) VOUT [V] 5.1 5.0 4.9 4.8 4.7 4.6 4.5 7.06.5 6.0 5.5 5.0 4.5 IOUT = 1 mA 10 mA 100 mA 300 mA VIN [V]

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 19 (3) Dropout voltage vs. Output current S-1170B15 S-1170B30 Vdrop [V] 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 100 400 600 900200 300 500 700 800 −40°C 25°C 85°C Vdrop [V] 0.6 0.5 0.4 0.3 0.2 0.1 100 400 600 900200 300 500 700 800 −40°C 25°C 85°C IOUT [mA] IOUT [mA] S-1170B50 Vdrop [V] 0.6 0.5 0.4 0.3 0.2 0.1 100 400 600 900200 300 500 700 800 −40°C 25°C 85°C IOUT [mA] (4) Dropout voltage vs. Set output voltage Vdrop [V] 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 1 2 3 4 5 6 0 600 mA 800 mA 300 mA 10 mA VOUT(S) [V]

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 20 (5) Output voltage vs. Ambient temperature S-1170B15 (IOUT = 10 mA) S-1170B30 (IOUT = 10 mA) VOUT(E) [V] 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 −25 75 85−40 0 50 VOUT(E) [V] 3.20 3.15 3.10 3.05 3.00 2.95 2.90 2.85 2.80 −25 75 85−40 0 50 Ta [°C] Ta [°C] S-1170B50 (IOUT = 10 mA) VOUT(E) [V] 5.20 5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 25 −25 75 85−40 0 50 Ta [°C] (6) Current consumption vs. Input voltage S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) ISS1 [μA] 4 2 0 1 3 5 7 ISS1 [μA] 4 2 0 1 3 5 7 V IN [V] V IN [V] S-1170B50 (Ta = 25°C) ISS1 [μA] 4 2 0 1 3 5 7 V IN [V]

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 21 (7) Ripple rejection S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) VIN = 2.5 V, COUT = 4.7 μF VIN = 4.0 V, COUT = 4.7 μF Ripple Rejection [dB] 100 100 1k 10k 100k 10 IOUT = 50 mA 100 mA Ripple Rejection [dB] 100 100 1k 10k 100k 10 IOUT = 50 mA 100 mA Frequency [Hz] Frequency [Hz] S-1170B50 (Ta = 25°C) VIN = 6.0 V, COUT = 4.7 μF Ripple Rejection [dB] 100 100 1k 10k 100k 10 IOUT = 50 mA 100 mA Frequency [Hz]

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Rev.4.1_00 Seiko Instruments Inc. 22 „ Reference Data (1) Input transient response characteristics S-1170B15 S-1170B30 VOUT [V] −20 −10 0 10 20 30 40 50 60 1.62 1.60 1.58 1.56 1.54 1.52 1.50 1.48 1.46 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 VIN VOUT VIN [V] VOUT [V] −20 −10 0 10 20 30 40 50 60 3.08 3.06 3.04 3.02 3.00 2.98 2.96 6.0 5.0 4.0 3.0 2.0 1.0 VIN VOUT VIN [V] t [μs] t [μs] S-1170B50 IOUT = 100 mA, tr = tf = 5.0 μs, COUT = 4.7 μF, CIN = 4.7 μF VOUT [V] −20 −10 0 10 20 30 40 50 60 5.12 5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 VIN VOUT VIN [V] t [μs] (2) Load transient response characteristics S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) VOUT [V] 1.70 1.65 1.60 1.55 1.50 1.45 1.40 150 100 −50 −100 −150 0 20 40 60 80 100 120 140 −20 160 IOUT VOUT IOUT [mA] VOUT [V] 150 100 −50 −100 −150 3.20 3.15 3.10 3.05 3.00 2.95 2.90 0 20 40 60 80 100 120 140 −20 160 IOUT VOUT IOUT [mA] t [μs] t [μs] S-1170B50 (Ta = 25°C) VIN = 6.0 V, COUT = 4.7 μF, CIN = 4.7 μF, IOUT = 50 mA ↔100 mA VOUT [V] 5.20 5.15 5.10 5.05 5.00 4.95 4.90 150 100 −50 −100 −150 0 20 40 60 80 100 120 140 −20 160 VOUT IOUT IOUT [mA] t [μs]

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1170 Series Seiko Instruments Inc. 23 (3) ON/OFF pin transient response characteristics S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) VOUT [V] 0 10 20 30 40 50 60 70 −10 80 90 VON/OFF VOUT VON/OFF [V] VOUT [V] 0 10 20 30 40 50 60 70 −10 80 90 VON/OFF VOUT VON/OFF [V] t [μs] t [μs] S-1170B50 (Ta = 25°C) VIN = 6.0 V, COUT = 4.7 μF, CIN = 4.7 μF, IOUT = 100 mA VOUT [V] 0 10 20 30 40 50 60 70 −10 80 90 VON/OFF VOUT VON/OFF [V] t [μs] S-1170B15 (Ta = 25°C) S-1170B30 (Ta = 25°C) VOUT [V] 0 10 20 30 40 50 60 70 −10 80 90 VON/OFF VOUT VON/OFF [V] VOUT [V] 0 10 20 30 40 50 60 70 −10 80 90 VON/OFF VOUT VON/OFF [V] t [μs] t [μs] S-1170B50 (Ta = 25°C) VIN = 6.0 V, COUT = 4.7 μF, CIN = 4.7 μF, IOUT = 300 mA VOUT [V] 0 10 20 30 40 50 60 70 −10 80 90 VON/OFF VOUT VON/OFF [V] t [μs]

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