Automotive ICs

Automotive, 125°C Operation, 36 V Input, 500 mA, Voltage Regulator with Reset Function S-19318 Series

Proposing the ideal stabilized power from a broad lineup S-19317/8、S-19311/2 Series

This IC is a high-withstand voltage and low dropout positive voltage regulator with a reset function and has a built-in ON / OFF circuit, developed using high-withstand voltage CMOS process technology.
This IC operates at the maximum operation voltage of 36 V and a low current consumption of 3.0 μA typ. 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. Regarding a release signal output in the reset function, this IC enables delay time adjustment by an external capacitor.

Thermal simulation service
ABLIC Inc. offers a “thermal simulation service” which supports the thermal design in conditions when our power management ICs are in use by customers. Our thermal simulation service will contribute to reducing the risk in the thermal design at customers development stage.
For more information regarding our thermal simulation service, contact our sales representatives.

FIT rate calculation
ABLIC Inc. offers FIT rate calculated based on actual customer usage conditions in order to support customer functional safety design.
For more information regarding our FIT rate calculation, contact our sales representatives.

Caution: This product can be used in vehicle equipment and in-vehicle equipment. Before using the product for these purposes, it is imperative to contact our sales representatives.


Regulator block

Output voltage
3.3 V, 5.0 V
Input voltage
3.0 V to 36.0 V
Output voltage accuracy
±2.0% (Tj = -40°C to +150°C)
Dropout voltage
100 mV typ. (5.0V output product, IOUT = 100mA)
Output current
Possible to output 500 mA (VIN = VOUT(S) + 1.0 V)*1
Input and output capacitors
A ceramic capacitor of 1.0 µF or more can be used.
Built-in overcurrent protection circuit
Limits overcurrent of output transistor.
Built-in thermal shutdown circuit
Detection temperature 170°C typ.
Built-in ON / OFF circuit
Ensures long battery life.

Detector block

Detection voltage
2.6 V to 4.7 V, selectable in 0.1 V step
Detection voltage accuracy
±2.0% (Tj = -40°C to +150°C)
Hysteresis width
0.12 V min.
Release delay time is adjustable*2
20 ms typ. (CDLY = 10 nF)


Current consumption
3.0 μA typ. (During regulator operation)
0.1 μA typ. (During regulator stop)
Operation temperature range
Ta = -40°C to +125°C
Lead-free (Sn 100%), halogen-free
Withstand 45 V load dump
AEC-Q100 qualified*3

*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large.
*2. The release delay time can be adjusted by connecting CDLY to the DLY pin.
*3. Contact our sales representatives for details.


  • Constant-voltage power supply and reset circuit for automotive electric component

Parts List

  • U(Ux), S and G at the end of the product name of ABLIC Inc. were used to indicate different material specifications as “environmental code”,
    however, these have now been unified into “lead-free and halogen-free” and are identical in terms of environmental quality.
  • Note: Lead-free plating other than 100% Sn is applied to some limited old products, therefore, please contact our sales representatives for details.
  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.