Post Date : Nov 16, 2023 / Last updated : Nov 22, 2023

There are two types of output logics of voltage detector; output logic that outputs "L" signal at detection and output logic that outputs "H" signal at detection.It is sometimes abbreviated as "L" (active "L") at detection and "H" (active "H") at detection.
TOREX changes the output terminal name according to output logic. The terminal "L" type at detection is called RESETB and output terminal "H" type at detection is called RESET.

■How to select an output logic

The general output logic of voltage detector is "L" type at detection.This is because there are a lot of devices for which reset is executed when RESET terminal of MCU, etc. becomes "L" level.

The "H" type at detection is used when a "H" level is required as a logic input. Or, for a circuit that cuts off the power supply line when the battery voltage drops, use the voltage detector of "H" type at detection to drive Pch FET. Then, the power supply line can be easily cut off.

Example of circuit that cuts off the power supply line when the battery voltage drops