ABLIC S-19720 Series Automotive Voltage Tracker

ABLIC S-19720 Series Automotive Voltage Tracker features high-withstand voltage CMOS process technology and low current consumption. With a maximum operating voltage of 36V and a current consumption as low as 3µA, the S-19720 reduces standby current. This device operates stably due to the internal phase compensation circuit so that users can use a low ESR ceramic capacitor as the output capacitor. The S-19720 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 at -5mA. This feature eliminates the need for an external protection diode.

The ABLIC S-19720 Series Voltage Tracker is offered in compact HSNT-6(2025) and SOT-23-5 package options ideal for space-constrained applications. Both variants are AEC-Q100 qualified for use in automotive applications.

Features

  • 0V to 36.0V input voltage
  • ±5mV (0.1mA ≤ IOUT ≤ 50mA) offset voltage
  • 160mV (VADJ / EN = 4.0V, IOUT = 10mA) dropout voltage (typical)
  • Current consumption
    • 30µA (typical) during operation
    • 4µA (typical) during power-off
  • 50mA (VIN = VADJ / EN + 2.0V) output current 
  • Input capacitor: Ceramic capacitor, 1.0mF or more
  • Output capacitor: Ceramic capacitor, 1.0mF to 1000mF
  • Built-in overcurrent protection circuit
  • Built-in thermal shutdown circuit: Detection temperature of +175°C
  • Reverse current protection function: IREV = -5mA (VIN = 0 V, VADJ / EN = 5.0V, VOUT = 16.0V)
  • Withstands 45V load dump
  • -40°C to +125°C operating temperature range
  • Package options
    • 2.46mm x 1.96mm x 0.50mm HSNT-6(2025)
    • 2.80mm x 2.90mm x 1.30mm SOT-23-5
  • Lead-free (Sn 100%), halogen-free
  • AEC-Q100 qualified

Applications

  • Power supply for automotive off-board sensors
  • Engine, transmission, suspension, ABS, and related devices for EV, HEV, and PHEV

Resources

  • Datasheet
  • HSNT-6(2025) Package Information
  • SOT-23-5 Package Information

Block Diagram

Block Diagram - ABLIC S-19720 Series Automotive Voltage Tracker

HSNT-6(2025) Pin Designations

Mechanical Drawing - ABLIC S-19720 Series Automotive Voltage Tracker

SOT-23-5 Pin Designations

Mechanical Drawing - ABLIC S-19720 Series Automotive Voltage Tracker

ABLIC S-19720 Series Automotive Voltage Tracker