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www.sii-ic.com FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION © Seiko Instruments Inc., 2015 Rev.1.0_01 Seiko Instruments Inc. 1 The S-19311 Series, developed by using high-withstand voltage CMOS technology, is a positive voltage regulator with the reset function, which has high-withstand voltage and high-accuracy output voltage. This IC has a built-in low on-resistance output transistor which provides a small dr opout voltage and a large output current. Also, a built-in overcurrent protection circuit to limit overcurrent of the output transistor and a built-in thermal shutdown circuit to limit heat are included. High heat radiation TO-252-5S(A) and HSOP-8A packages enable high-density mounting. Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the purpose, contact to SII is indispensable.  Features Regulator block

  • Output voltage: 3.0 V to 5.3 V, selectable in 0.1 V step
  • Input voltage: 4.0 V to 36.0 V
  • Output voltage accuracy: ±2.0% (Tj = −40°C to +150°C)
  • Dropout voltage: 120 mV typ. (5.0 V output product, I OUT = 100 mA)
  • Output current: Possible to output 200 mA (V IN = VOUT(S) + 1.0 V)*1
  • Input and output capacitors: A ceramic capacitor of 2.2 μF or more can be used.
  • Ripple rejection: 70 dB typ. (f = 100 Hz)
  • Built-in overcurrent protection circuit: Limits overcurrent of output transistor.
  • Built-in thermal shutdown circuit: Detection temperature 170°C typ. Detector block
  • Detection voltage: 2.6 V to 5.0 V, selectable in 0.1 V step
  • Detection voltage accuracy: ±100 mV (Tj = −40°C to +150°C)
  • Hysteresis width: 0.12 V min.
  • Release delay time: 18 ms typ. (C DLY = 47 nF)
  • Output form: Nch open-drain output (Built-in pull-up resistor) Overall
  • Current consumption: During operation: 60 μA typ., 95 μA max. (Tj = −40°C to +150°C)
  • Operation temperature range: Ta = −40°C to +125°C
  • Lead-free (Sn 100%), halogen-free
  • Withstand 45 V load dump
  • AEC-Q100 in process*2 *1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large. *2. Contact our sales office for details.  Applications
  • Constant-voltage power supply and reset circuit for automotive electric component
  • For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)  Packages
  • TO-252-5S(A)
  • HSOP-8A

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 2  Block Diagram VIN VSS VOUT DLY Voltage detection circuit RO Overcurrent protection circuit Thermal shutdown circuit Reference voltage circuit Reference voltage circuit *1. Parasitic diode Figure 1

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 3  AEC-Q100 in Process Contact our sales office for details of AEC-Q100 reliability specification.  Product Name Structure Users can select the output volt age and detection voltage for the S-19311 Series. Refer to " 1. Product name " regarding the contents of product name, " 3. Packages " regarding the package drawings and " 4. Product name list" for details of product names. 1. Product name S-19311 B x x A - xxxx U 4 Package abbreviation and IC packing specifications*1 V5T2: TO-252-5S(A), Tape E8T1: HSOP-8A , Tape Environmental code U: Lead-free (Sn 100%), halogen-free Operation temperature A: Ta = −40°C to +125°C Product type B: With DLY pin, V OUT detection (Detector) Detection voltage*2 F to Z, 0 to 5 Output voltage*2 C to Z, 0, 1 *1. Refer to the tape drawing. *2. Refer to " 2. Product option list ". 2. Product option list 2. 1 Output voltage 2. 2 Detection voltage Set Output Voltage Symbol Set Output Voltage Symbol Set Detection Voltage Symbol Set Detection Voltage Symbol 5.3 V C 4.1 V Q 5.0 V F 3.7 V U 5.2 V D 4.0 V R 4.9 V G 3.6 V V 5.1 V E 3.9 V S 4.8 V H 3.5 V W 5.0 V F 3.8 V T 4.7 V J 3.4 V X 4.9 V G 3.7 V U 4.6 V K 3.3 V Y 4.8 V H 3.6 V V 4.5 V L 3.2 V Z 4.7 V J 3.5 V W 4.4 V M 3.1 V 0 4.6 V K 3.4 V X 4.3 V N 3.0 V 1 4.5 V L 3.3 V Y 4.2 V P 2.9 V 2 4.4 V M 3.2 V Z 4.1 V Q 2.8 V 3 4.3 V N 3.1 V 0 4.0 V R 2.7 V 4 4.2 V P 3.0 V 1 3.9 V S 2.6 V 5

3.8 V T

Remark Set output voltage ≥ Set detection voltage + 0.3 V

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 4 3. Packages Table 1 Package Drawing Codes Package Name Dimension Tape Reel Land TO-252-5S(A) VA005-A-P-SD VA005-A-C-SD VA005-A-R-SD VA005-A-L-SD HSOP-8A FH008-A-P-SD FH008-A-C-SD FH008-A-R-SD FH008-A-L-SD 4. Product name list Table 2 Output Voltage Detection Voltage TO-252-5S(A) HSOP-8A 5.0 V ± 2.0% 2.9 V ± 0.1 V S-19311BF2A-V5T2U4 S-19311BF2A-E8T1U4 5.0 V ± 2.0% 4.1 V ± 0.1 V S-19311BFQA-V5T2U4 S-19311BFQA-E8T1U4 5.0 V ± 2.0% 4.5 V ± 0.1 V S-19311BFLA-V5T2U4 S-19311BFLA-E8T1U4 5.0 V ± 2.0% 4.6 V ± 0.1 V S-19311BFKA-V5T2U4 S-19311BFKA-E8T1U4 5.0 V ± 2.0% 4.7 V ± 0.1 V S-19311BFJA-V5T2U4 S-19311BFJA-E8T1U4 Remark Please contact our sales office for products with specifications other than the above.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 5  Pin Configurations 1. TO-252-5S(A) Top view 51 42 Figure 2 Table 3 Pin No. Symbol Description

1 VIN Voltage input pin (Regulator block)

2 VOUT Voltage output pin (Regulator block)

3 VSS GND pin

4 DLY Connection pin for delay time

5 RO Reset output pin

  1. HSOP-8A Bottom view Top view *1. Connect the heat sink of backside at shadowed area to the board, and set electric potential open or GND. However, do not use it as the function of electrode. Figure 3 Table 4 Pin No. Symbol Description

1 VOUT Voltage output pin (Regulator block)

2 NC*1 No connection

6 NC*1 No connection

7 NC*1 No connection

8 VIN Voltage input pin (Regulator block)

*1. The NC pin is electrically open. The NC pin can be connected to the VDD pin or the VSS pin.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 6  Absolute Maximum Ratings Table 5 (Tj = −40°C to +150°C unless otherwise specified) Item Symbol Abso lute Maximum Rating Unit VIN pin voltage V IN V SS − 0.3 to VSS + 45.0 V VOUT pin voltage V OUT V SS − 0.3 to VIN + 0.3 ≤ VSS + 7.0 V DLY pin voltage V DLY V SS − 0.3 to VOUT + 0.3 ≤ VSS + 7.0 V RO pin voltage V RO V SS − 0.3 to VOUT + 0.3 ≤ VSS + 7.0 V Output current I OUT 260 mA Junction temperature T j −40 to +150 °C Operation ambient temperature T opr −40 to +125 °C Storage temperature T stg −40 to +150 °C 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.  Thermal Resistance Value Table 6 Item Symbol Condition Min. Typ. Max. Unit Junction-to-ambient thermal resistance*1 θja TO-252-5S(A) Board 1 − 86 − °C/W Board 2 − 60 − °C/W Board 3 − 38 − °C/W Board 4 − 31 − °C/W Board 5 − 28 − °C/W HSOP-8A Board 1 − 104 − °C/W Board 2 − 74 − °C/W Board 3 − 39 − °C/W Board 4 − 37 − °C/W Board 5 − 31 − °C/W *1. Test environment: compliance with JEDEC STANDARD JESD51-2A Remark Refer to " Thermal Characteristics " for details of power dissipation and test board.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 7  Electrical Characteristics 1. Regulator block Table 7 (VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Output voltage*1 VOUT(E) VIN = 13.5 V, IOUT = 30 mA VOUT(S) − 2.0% VOUT(S) VOUT(S) + 2.0% V 1 Output current*2 IOUT VIN ≥ VOUT(S) + 1.0 V 200*4 − − mA 2 Dropout voltage*3 Vdrop IOUT = 30 mA, Ta = +25°C, VOUT(S) = 3.0 V to 5.3 V − 40 50 mV 1 IOUT = 100 mA, Ta = +25°C, VOUT(S) = 3.0 V to 5.3 V − 120 200 mV 1 Line regulation ΔVOUT1 ΔVIN • VOUT VOUT(S) + 1.0 V ≤ VIN ≤ 36.0 V, IOUT = 30 mA, Ta = +25°C − 0.02 0.10 %/V 1 Load regulation ΔVOUT2 VIN = 13.5 V, 100 μA ≤ IOUT ≤ 100 mA, Ta = +25°C − 20 40 mV 1 Input voltage V IN − 4.0 − 36.0 V − Ripple rejection |RR| VIN = 13.5 V, IOUT = 30 mA, f = 100 Hz, ΔVrip = 1.0 Vp-p − 70 − dB 3 Short-circuit current I short VIN = 13.5 V, VOUT = 0 V, Ta = +25°C − 60 − mA 2 Thermal shutdown detection temperature TSD Junction temperature − 170 − °C − Thermal shutdown release temperature TSR Junction temperature − 135 − °C − *1. V OUT(S): Set output voltage V OUT(E): Actual output voltage Output voltage when fixing I OUT (= 30 mA) and inputting 13.5 V *2. The output current at which the output voltage becomes 95% of V OUT(E) after gradually increasing the output current. *3. V drop = VIN1 − (VOUT3 × 0.98) V OUT3 is the output voltage when V IN = VOUT(S) + 1.0 V. VIN1 is the input voltage at which t he output voltage becomes 98% of V OUT3 after gradually decreasing the input voltage. *4. The output current can be at least this value. Due to limitation of the power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation when the output current is large. This specification is guaranteed by design.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 8 2. Detector block Table 8 (VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Detection voltage*1 −VDET − −VDET(S) − 0.1 −VDET(S) −VDET(S) + 0.1 V 4 Hysteresis width V HYS − 120 150 − mV 4 Reset output voltage "H" V ROH − VOUT(S) × 0.9 − − V 4 Reset output voltage "L" V ROL VOUT ≥ 1.0 V, Rext ≥ 3 kΩ, Connect to VOUT pin − 0.2 0.4 V 4 Reset pull-up resistance RRO VOUT pin internal resistance 20 30 45 k Ω − Reset output current I RO V RO = 0.4 V, VOUT = −VDET(S) − 0.1 V 3.0 − − mA 5 Lower reset timing threshold voltage VDRL − 0.2 0.3 0.4 V 6 Upper timing threshold voltage VDU − 1.5 1.9 2.3 V 6 Charge current I D,cha V DLY = 1.0 V 2.0 5.0 8.0 μA 6 Release delay time*2 trd C DLY = 47 nF 11 18 25 ms 4 Reset reaction time*3 trr C DLY = 47 nF − − 50 μs 4 *1. −VDET: Actual detection voltage, −VDET(S): Set detection voltage *2. The time period from when V OUT changes to −VDET(S) − 0.15 V → VOUT(S) to when VRO reaches VOUT / 2. *3. The time period from when V OUT changes to VOUT(S) → −VDET(S) − 0.15 V to when VRO reaches VOUT / 2. 3. Overall Table 9 (VIN = 13.5 V, Tj = −40°C to +150°C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Current consumption during operation I SS1 VIN = 13.5 V, IOUT = 0 mA − 60 95 μA 7

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 10  Timing Chart −VDET +VDET VIN VOUT VDLY VRO ≪trr VDU VDRL t trd trr Figure 11 Example of Detector Operation

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 11  Standard Circuit CIN *1 CL Input Output GNDSingle GND VIN VSS RO Rext CDLY VOUT DLY Figure 12 *1. C IN is a capacitor for stabilizing the input. *2. C L is a capacitor for stabilizing the output. A ceramic capacitor of 2.2 μF or more can be used. *3. C DLY is the delay time adjustment capacitor. *4. R ext is the external pull-up resist or for the reset output pin. Connection of the external pull-up resistor is not absolutely essential since the S-19311 Series has a built-in pull-up resistor. Caution The above connection diagram and constants will not guarantee successful operation. Perform thorough evaluation using an actual application to set the constants.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 12  Condition of Application Input capacitor (CIN) : 2.2 μF or more Output capacitor (CL) : 2.2 μF or more ESR of output capacitor : 10 Ω or less Delay time adjustment capacitor (C DLY) : 1.0 nF or more External pull-up resistor (R ext) : 3 k Ω or more Caution Generally a series regulator may cause oscilla tion, depending on the selection of external parts. Confirm that no oscillation occurs in the appli cation for which the above capacitors are used.  Selection of Input and Output Capacitors (CIN, CL) The S-19311 Series requires C L between the VOUT pin and the VSS pin for phase compensation. Operation is stabilized by a ceramic capacitor wi th an output capacitance of 2.2 μF or more over the entire temperature range. When using an OS capacitor, a tantalum capacitor, or an aluminum electrolytic capaci tor, the capacitance must be 2.2 μF or more, and the ESR must be 10 Ω or less. The values of output overshoot and undershoot, which are tr ansient response characteristics, vary depending on the value of the output capacitor. The required value of capacitance for the input ca pacitor differs depending on the application. Caution Define the capacitance of C IN and C L by sufficient evaluation including the temperature characteristics under the actual usage conditions.  Selection of Delay Time Adjustment Capacitor (CDLY) In the S-19311 Series, the delay time adjustment capacitor (C DLY) is necessary between th e DLY pin a nd the VSS pin to adjust the release delay time (t rd) of the detector. The set release delay time (t rd(S)), is calculated by using following equation. The release delay time (t rd) at the time of the condition of C DLY = 47 nF is shown in "  Electrical Characteristics ". trd(S) [ms] = trd [ms] × CDLY [nF] 47 [nF] Caution 1. The above equation will not guarantee successful operation. Perform thorough evaluation including the temperature characteristics using an actual application to set the constants. 2. Mounted board layout should be made in such a way that no current flows into or flows from the DLY pin since the impedance of the DLY pin is high, otherwise correct delay time may not be provided. 3. Select C DLY whose leakage current can be ignored against the built-in constant current. The leakage current may cause deviation in delay time and monitoring time. When the leakage current is larger than the built-in constant current, no release takes place.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 13  Explanation of Terms 1. Regulator block 1. 1 Low dropout voltage regulator This voltage regulator has the low dropout volta ge due to its built-in low on-resistance transistor. 1. 2 Output voltage (V OUT) The accuracy of the outp ut voltage is ensured at ±2.0% under specified conditions of fixed input voltage *1, fixed output current, and fixed temperature. *1. Differs depending on 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 "1. Regulator block" in "  Electrical Characteristics" and "1. Regulator block" in "  Characteristics (Typical Data)" for details. 1. 3 Line regulation  ΔVOUT1 ΔVIN • VOUT Indicates the dependency of the output voltage against the input voltage. T hat is, the value shows how much the output voltage changes due to a change in the inpu t voltage after fixing ou tput current constant. 1. 4 Load regulation ( ΔVOUT2) Indicates the dependency of the output voltage against t he output current. That is, the value shows how much the output voltage changes due to a change in the ou tput current after fixing input voltage constant. 1. 5 Dropout voltage (V drop) Indicates the difference between input voltage (V IN1) and the output voltage when; decreasing input voltage (V IN) gradually until the output vo ltage has dropped out to the value of 98% of output voltage (V OUT3), which is at V IN = VOUT(S) + 1.0 V. Vdrop = VIN1 − (VOUT3 × 0.98)

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 15 2. 5 Reset reaction time (t rr) The reset reaction time is the time period from when V OUT falls below the detection voltage ( −VDET) to when the RO pin output inverts (Refer to Figure 16). Since t rr depends on the reaction time of internal circuit and the discharge time of CDLY, it becomes longer if the capacitance of C DLY becomes larger. Refer to " 2. 9 Reset reaction time vs. Capacitance for delay time adjustment capacitor " in " Characteristics (Typical Data) ". trr VOUT VRO V −VDET VDRL VDLY Figure 16 Reset Reaction Time

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 17 1. 3 Overcurrent protection circuit The S-19311 Series includes an overcurrent protection circuit which having the characteristics shown in "1. 1 Output voltage vs. Output current (When load current increases) (Ta = +25°C)" of " 1. Regulator block" in " Characteristics (Typical Data) ", in order to limit an excessive out put current and overcurrent of the output transistor due to short-circuiting between the VO UT pin and the VSS pin. The current when the output pin is short-circuited (I short) is internally set at approx. 60 mA typ., and the load current when short-circuiting is limited based on this value. The output voltage restarts regulating if the output transistor is released from overcurrent status. Caution This overcurrent protection circuit does not work as for thermal protection. If this IC long keeps short circuiting, pay attention to the conditions of input voltage and load current so that, under the usage conditions including short circuit, the loss of the IC will not exceed power dissipation. 1. 4 Thermal shutdown circuit The S-19311 Series has a thermal shutdown circuit to limit self-heating. When the junction temperature rises to 170°C typ., the thermal shutdown circuit operates to stop regulating. After that, when the junction temperature drops to 135°C typ., the thermal shutdown circuit is released to restart regulating. Due to self-heating of the S-19311 Seri es, if the thermal shutdown circuit st arts operating, it stops regulating so that the output voltage drops. For th is reason, self-heating is limited and the IC's temperature drops. When the temperature drops, the thermal shutdown circuit is released to restart regulating, thus self-heating is generated again due to rising of the output voltage. Repeating this procedure makes the waveform of the VOUT pin output into a pulse-like form. This phenomenon continue s unless decreasing either or both of the input voltage and the output current in order to reduce the internal po wer consumption, or decreasin g the ambient temperature. Note that the product may suffer physical damage such as deterioration if the above phenomenon occurs continuously. Table 10 Thermal Shutdown Circuit VOUT Pin Voltage Detect: 170°C typ.*1 VSS level Release: 135°C typ.*1 Set value *1. Junction temperature

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 19 2. 2 Delay circuit When the output voltage (V OUT) of the regulator rises under the status t hat "L" is output to the RO pin, the reset release signal is output to the RO pin later than when V OUT becomes +VDET. The release delay time (t rd) changes according to CDLY. Refer to " Selection of Delay Time Adjustment Capacitor (C DLY)" for details. Moreover, when V OUT decreases to −VDET or lower, the delay time of the same time length as the reset reaction time (t rr) occurs in the output to the RO pin. Refer to " 2. Detector block " in "  Explanation of Terms " for details. If the time period from when V OUT decreases to −VDET or lower to when V OUT increases to +VDET or higher is significantly shorter compared to the length of t rr, VDLY may not decrease to V DRL or lower. In that case, "H" output remains in the RO pin. Caution Since t rd depends on the charge time of C DLY, t rd may be shorter than the set value if the charge operation is initiated under the condition that a residual electric charge is left in C DLY. 2. 3 Output circuit The output form of the RO pi n is Nch open-drain. The RO pin can output a signal without an external pull-up resistor since it has a built-in resistor to pull up to the VOUT pin internally. Do not connect to the pin other than VOUT pin when conn ecting an external pull-up resistor to the RO pin. Caution Define the external pull-up resistance by sufficient evaluation including the temperature characteristics under the actual usage conditions.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 20  Precautions

  • Wiring patterns for the VIN pin, the VOUT pin 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 between 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 when a series regulator is used at low load current (0.1 mA or less).
  • Note that generally the output voltage may increase due to the leakage current from an output transistor when a series regulator is used at high temperature.
  • Generally a series regulator may cause oscillation, dep ending on the selection of external parts. The following conditions are recommended for the S-19311 Series. However, be sure to perform sufficient evaluation under the actual usage conditions for selection, including eval uation of temperature characteristics. Refer to " 3. Equivalent series resistance vs. Output current characteristics (Ta = +25°C)" in "  Reference Data " for the equivalent series resistance (RESR) of the output capacitor. Input capacitor (C IN): 2.2 μF or more Output capacitor (C L): 2.2 μF or more
  • In a series regulator, generally the values of oversh oot and undershoot in the output voltage vary depending on the variation factors of power-on, power supply fluctuat ion and load fluctuation, or output capacitance. Determine the conditions of the output capacitor after sufficiently evaluating the temperature characteristics of overshoot or undershoot in the output voltage with the actual device.
  • The voltage regulator may oscillate wh en the impedance 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 t he voltage is rapidly raised at power-on or when the power supply fluctuates. Sufficiently evaluate the output voltage at that time with the actual device.
  • If the VOUT pin is steeply shorted with GND, a negative voltage exceeding the absolute maximum ratings may occur to the VOUT pin due to resonance of the wiring induct ance and the output capacitance in the application. The negative voltage can be limited by inse rting a protection diode between the VO UT pin and the VSS pin or inserting a series resistor to the output capacitor.
  • The application conditions for the input voltage, the output voltage, and the load current should not exceed the power dissipation.
  • Do not apply an electrostatic discharge to this IC that ex ceeds the performance 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 7 in "  Electrical Characteristics " and footnote *4 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.

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 21  Characteristics (Typical Data) 1. Regulator block 1. 1 Output voltage vs. Output current (When load current increases) (Ta = +25°C) 4.0 0.0 0 600 IOUT [mA] 3.0 2.0 1.0 VOUT [V] 500400300200100 VIN = 3.8 V VIN = 4.3 V VIN = 13.5 V 6.0 0.0 0 600 IOUT [mA] VOUT [V] 500400300200100 5.0 4.0 3.0 2.0 1.0 VIN = 5.5 V VIN = 6.0 V VIN = 13.5 V 1. 2 Output voltage vs. Input voltage (Ta = +25°C) 4.0 0.0 01 8 VIN [V] 3.0 2.0 1.0 VOUT [V] 1512963 IOUT = 1 mA IOUT = 30 mA IOUT = 10 mA IOUT = 100 mA 6.0 0.0 01 8 VIN [V] VOUT [V] 1512963 5.0 4.0 3.0 2.0 1.0 IOUT = 1 mA IOUT = 30 mA IOUT = 10 mA IOUT = 100 mA 1. 3 Dropout voltage vs. Output current 200 0 200 IOUT [mA] 150 100 Vdrop [mV] 15010050 Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C 200 0 200 IOUT [mA] 150 100 Vdrop [mV] 15010050 Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C 1. 4 Dropout voltage vs. Junction temperature −25 0 150 125100755025−40 Tj [°C] 100 Vdrop [mV] IOUT = 30 mA IOUT = 100 mA −25 0 150 125100755025−40 Tj [°C] 100 Vdrop [mV] IOUT = 30 mA IOUT = 100 mA

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 22 1. 5 Output voltage vs. Junction temperature 1. 5. 1 V OUT = 3.3 V VIN = 13.5 V 1. 5. 2 V OUT = 5.0 V VIN = 13.5 V −25 0 150 125100755025−40 Tj [°C] 3.0 3.6 VOUT [V] 3.5 3.4 3.3 3.2 3.1 −25 0 150 125100755025−40 Tj [°C] 4.7 5.3 VOUT [V] 5.2 5.1 5.0 4.9 4.8 1. 6 Ripple rejection (Ta = +25°C) 1. 6. 1 V OUT = 3.3 V VIN = 13.5 V, CL = 2.2 μF 1. 6. 2 V OUT = 5.0 V VIN = 13.5 V, CL = 2.2 μF 100 1k 10k Ripple Rejection [dB] Frequency [Hz] 10 1M 100 100k IOUT = 1 mA IOUT = 30 mA IOUT = 100 mA 100 1k 10k Ripple Rejection [dB] Frequency [Hz] 10 1M 100 100k IOUT = 1 mA IOUT = 30 mA IOUT = 100 mA 2. Detector block 2. 1 Detection voltage, Release voltage vs. Junction temperature 25 0 150 12510075502540 Tj [°C] 2.2 3.2 3.0 2.8 2.6 2.4 VDET, VDET [V] VDET VDET 25 0 150 12510075502540 Tj [°C] 4.3 5.3 5.1 4.9 4.7 4.5 VDET, VDET [V] VDET VDET 2. 2 Hysteresis width vs. Junction temperature −25 0 150 125100755025−40 Tj [°C] 300 VHYS [mV] 250 200 150 100 −25 0 150 125100755025−40 Tj [°C] 300 VHYS [mV] 250 200 150 100

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 23 2. 3 Nch transistor output current vs. VDS 100 0.0 3.0 IRO [mA] VDS [V] Ta = +125°C Ta = +25°C Ta = −40°C 200 IRO [mA] VDS [V] 160 120 4321 Ta = +125°C Ta = +25°C Ta = −40°C 2. 4 Nch transistor output current vs. Output voltage 2. 4. 1 −VDET = 2.6 V VDS = 0.4 V 2. 4. 2 −VDET = 4.7 V VDS = 0.4 V 0.0 3.0 IRO [mA] VOUT [V] Ta = +125°C Ta = +25°C Ta = −40°C IRO [mA] VOUT [V] 4321 Ta = +125°C Ta = +25°C Ta = −40°C 2. 5 Nch transistor output voltage vs. Output voltage 2. 5. 1 −VDET = 2.6 V VDS = 0.4 V 2. 5. 2 −VDET = 4.7 V VDS = 0.4 V 0.0 3.0 VRO [V] VOUT [V] Tj = +125°CTj = +150°C Tj = +25°C Tj = −40°C VRO [V] VOUT [V] 4321 Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C Remark VDS: Drain-to-source voltage of the output transistor

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 24 2. 6 Release delay time vs. Junction temperature −25 0 150 125100755025−40 Tj [°C] trd [ms] −25 0 150 125100755025−40 Tj [°C] trd [ms] 2. 7 Release delay time vs. Capacitance for delay time adjustment capacitor 1000 1000 100 0.1 100101 trd [ms] CDLY [nF] Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C 1000 1000 100 0.1 100101 trd [ms] CDLY [nF] Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C 2. 8 Reset reaction time vs. Junction temperature 25 0 150 12510075502540 Tj [C] trr [s] 25 0 150 12510075502540 Tj [C] trr [s] 2. 9 Reset reaction time vs. Capacitance for delay time adjustment capacitor 100 1000 100101 trr [μs] CDLY [nF] Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C 100 1000 100101 trr [μs] CDLY [nF] Tj = +125°C Tj = +150°C Tj = +25°C Tj = −40°C

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION Rev.1.0_01 S-19311 Series Seiko Instruments Inc. 25 3. Overall 3. 1 Current consumption during operation vs. input voltage 300 01 8 ISS1 [A] VIN [V] 15963 250 200 150 100 Tj = 125C Tj = 150C Tj = 25C Tj = 40C 300 ISS1 [A] VIN [V] 250 200 150 100 01 8 15963 12 Tj = +125C Tj = +150C Tj = +25C Tj = 40C 3. 2 Current consumption during operation vs. Output current 160 02 0 0 ISS1 [A] IOUT [mA] 1601208040 120

40 Ta = 125C

Ta = 40C Ta = 25C 160 02 0 0 ISS1 [A] IOUT [mA] 1601208040 120 Ta = 40C Ta = 25C 3. 3 Current consumption during operation vs. Junction temperature 160 ISS1 [A] 120 25 0 150 12510075502540 Tj [C] IOUT = 50 mAIOUT = 5 mA IOUT = 200 mA 160 ISS1 [A] 120 25 0 150 12510075502540 Tj [C] IOUT = 50 mAIOUT = 5 mA IOUT = 200 mA

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 26  Reference Data 1. Transient response characteristics when input (Ta = +25°C) 1. 1 V OUT = 3.3 V IOUT = 30 mA, CL = 2.2 μF, VIN = 11.5 V ↔ 13.5 V, tr = tf = 5.0 μs 1. 2 V OUT = 5.0 V IOUT = 30 mA, CL = 2.2 μF, VIN = 11.5 V ↔ 13.5 V, tr = tf = 5.0 μs 3.8 3.2 100 500 VOUT [V] 4003002001000 3.7 3.6 3.5 3.4 3.3 t [s] VIN [V] VOUT VIN 6.0 4.8 100 500 VOUT [V] 4003002001000 5.8 5.6 5.4 5.2 5.0 t [s] VIN [V] VOUT VIN 2. Transient response characteristics of load (Ta = +25°C) 2. 1 V OUT = 3.3 V VIN = 13.5 V, CL = 2.2 μF, IOUT = 50 mA ↔ 100 mA 2. 2 V OUT = 5.0 V VIN = 13.5 V, CL = 2.2 μF, IOUT = 50 mA ↔ 100 mA 3.7 3.1 100 500 VOUT [V] 4003002001000 3.6 3.5 3.4 3.3 3.2 t [s] 150 150 100 50 100 IOUT [mA] VOUT IOUT 5.8 4.6 100 500 VOUT [V] 4003002001000 5.6 5.4 5.2 5.0 4.8 t [s] 150 150 100 50 100 IOUT [mA] VOUT IOUT 3. Load dump characteristics (Ta = +25°C) 3. 1 V OUT = 5.0 V IOUT = 0.1 mA, V IN = 13.5 V ↔ 45.0 V, CIN = CL = 2.2 μF 6.0 4.8 0.1 0.9 VOUT [V] 0.40.30.20.10 5.8 5.6 5.4 5.2 5.0 t [s] 10 VIN [V] 0.5 0.6 0.7 0.8 VOUT VIN 4. Example of equivalent series resistance vs. Output current characteristics (Ta = +25°C) CIN = CL = 2.2 μF, CDLY = 47 nF 0.1 200 IOUT [mA] RESR [Ω] Stable CIN VIN VSS CL RESR S-19311 Series VOUT RO DLY CDLY *1. CL: Murata Manufacturing Co., Ltd. G C M 3 1 C R 7 1 H 2 2 5 K ( 2 . 2 μF) Figure 20 Figure 21

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 28 1. 3 Board 3 76.2 mm 114.3 mm Figure 25 Table 13 Item Specification Thermal resistance value (θja) 38°C/W Size 114.3 mm × 76.2 mm × t1.6 mm Material FR-4 Number of copper foil layer 4 Copper foil layer 1 Land pattern and wiring for testing: t0.070 mm 2 74.2 mm × 74.2 mm × t0.035 mm 3 74.2 mm × 74.2 mm × t0.035 mm 4 74.2 mm × 74.2 mm × t0.070 mm Thermal via Number: 4 Diameter: 0.3 mm 1. 4 Board 4 76.2 mm 114.3 mm 46 mm 46 mm Pattern for heat radiation Figure 26 Table 14 Item Specification Thermal resistance value (θja) 31°C/W Size 114.3 mm × 76.2 mm × t1.6 mm Material FR-4 Number of copper foil layer 4 Copper foil layer

1 Pattern for heat radiation:

46 mm × 46 mm × t0.070 mm 2 74.2 mm × 74.2 mm × t0.035 mm 3 74.2 mm × 74.2 mm × t0.035 mm 4 74.2 mm × 74.2 mm × t0.070 mm Thermal via − 1. 5 Board 5 76.2 mm 46 mm 114.3 mm 46 mm Figure 27 Table 15 Item Specification Thermal resistance value (θja) 28°C/W Size 114.3 mm × 76.2 mm × t1.6 mm Material FR-4 Number of copper foil layer 4 Copper foil layer 46 mm × 46 mm × t0.070 mm 2 74.2 mm × 74.2 mm × t0.035 mm 3 74.2 mm × 74.2 mm × t0.035 mm 4 74.2 mm × 74.2 mm × t0.070 mm Thermal via Number: 4 Diameter: 0.3 mm

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION S-19311 Series Rev.1.0_01 Seiko Instruments Inc. 30 2. 3 Board 3 76.2 mm 114.3 mm Figure 31 Table 18 Item Specification Thermal resistance value (θja) 39°C/W Size 114.3 mm × 76.2 mm × t1.6 mm Material FR-4 Number of copper foil layer 4 Copper foil layer 1 Land pattern and wiring for testing: t0.070 mm 2 74.2 mm × 74.2 mm × t0.035 mm 3 74.2 mm × 74.2 mm × t0.035 mm 4 74.2 mm × 74.2 mm × t0.070 mm Thermal via Number: 4 Diameter: 0.3 mm 2. 4 Board 4 76.2 mm 45 mm 114.3 mm 50 mm Pattern for heat radiation Figure 32 Table 19 Item Specification Thermal resistance value (θja) 37°C/W Size 114.3 mm × 76.2 mm × t1.6 mm Material FR-4 Number of copper foil layer 4 Copper foil layer 45 mm × 50 mm × t0.070 mm 2 74.2 mm × 74.2 mm × t0.035 mm 3 74.2 mm × 74.2 mm × t0.035 mm 4 74.2 mm × 74.2 mm × t0.070 mm Thermal via − 2. 5 Board 5 76.2 mm 45 mm 114.3 mm 50 mm Figure 33 Table 20 Item Specification Thermal resistance value (θja) 31°C/W Size 114.3 mm × 76.2 mm × t1.6 mm Material FR-4 Number of copper foil layer 4 Copper foil layer 45 mm × 50 mm × t0.070 mm 2 74.2 mm × 74.2 mm × t0.035 mm 3 74.2 mm × 74.2 mm × t0.035 mm 4 74.2 mm × 74.2 mm × t0.070 mm Thermal via Number: 4 Diameter: 0.3 mm

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