The electrification of automobiles and the introduction of Advanced Driver Assistance Systems (ADAS) mean a great variety of sensors has to be installed to enable high accuracy for safe control.

The S-19720 is a voltage tracker with the industry’s lowest offset voltage of ±5mV.
This helps keep the power supply voltage of the off-board ratiometric sensor equal to the reference voltage (Vref) of the AD converter (ADC) handling ECU measurements, raising sensor reading accuracy.

» What is a Voltage Tracker?

The voltage tracker with its 36V input and 50mA output current is housed in an HSNT-6(2025), the industry’s smallest package.
The S-19720 helps further reduce the footprint of automotive devices.

The S-19720 also integrates an overcurrent protection circuit, a thermal shutdown circuit and a reverse current protection function.
As a result, it will protect an ECU even in the event of a short to power / short to ground in a wire harness.

When IG is off, off-board sensors such as current sensors, ambient light sensors do not need to perform sensing; therefore, they are not supplied power by a tracker. However, the reverse current protection function, which protects an ECU even in the event of a short to power in a wire harness, has to continue to operate.

The S-19720 achieves the industry’s lowest class current consumption during power-off of 4µA typ. when this function operates.