Automotive ICs

Automotive, 125°C Operation, 36 V Input, 50 mA Voltage Tracker with Reverse Current Protection Function S-19720 Series

Features of automotive voltage tracker S-19720 Series

This IC, developed by using high-withstand voltage CMOS process technology, is a voltage tracker with a reverse current protection function, which has high-withstand voltage and low current consumption.
Since the maximum operating voltage is as high as 36 V and the current consumption is as low as 30 μA typ., it
contributes to the reduction of standby current.
This IC operates stably due to the internal phase compensation circuit so that users are able to use low ESR ceramic capacitor as the output capacitor.
This IC includes an overcurrent protection circuit that prevents the load current from exceeding the current capacity of the output transistor and a thermal shutdown circuit that prevents damage because of overheating.
Due to the built-in reverse current protection function, the reverse current flowing from the VOUT pin to the VIN pin can be controlled as the small value −5 μA min. Therefore, IC protection diode is not needed.

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.


Input voltage
4.0 V to 36.0 V
Offset voltage
±5 mV (0.1 mA ≤ IOUT ≤ 50 mA)
Dropout voltage
160 mV typ. (VADJ / EN = 4.0 V, IOUT = 10 mA)
Current consumption
During operation: 30 μA typ.
During power-off: 4.0 μA typ.
Output current
Possible to output 50 mA (VIN = VADJ / EN + 2.0 V)*1
Input capacitor
A ceramic capacitor can be used. (1.0 μF or more)
Output capacitor
A ceramic capacitor can be used. (1.0 μF to 1000 μF)
Built-in overcurrent protection circuit
Limits overcurrent of output transistor.
Built-in thermal shutdown circuit
Detection temperature 175°C typ.
Reverse current protection function
IREV = −5 μA min. (VIN = 0 V, VADJ / EN = 5.0 V, VOUT = 16.0 V)
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 representatives for details.


  • Power supply for automotive off-board sensors
  • For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)