BD37A19FVM/BD37A41FVM/BD87A28FVM/BD87A29FVM/BD87A34FVM/BD87A41FVM/BD99A41F is a watchdog timer reset IC. It delivers a high precision detection voltage of ±1.5% and a super-low current consumption of 5 µA (Typ.). It can be used in a wide range of electronic devices to monitor power supply voltages and in system operation to prevent runaway operation.
The document provides an overview of the BD37A19FVM voltage detector IC, highlighting its high‑precision detection voltage (+1.5%/+2.5%), super‑low 5 pA typical supply current, built‑in watchdog timer, and N‑channel open‑drain output. Package options include MSOP8 and SOP8, and the reset delay can be adjusted via external capacitance on the CT pin.
The IC is intended for automotive body‑control applications and can be used with any microcontroller‑based system that requires voltage monitoring and watchdog functionality. The note includes electrical characteristics, pin assignments, timing diagrams, external setting recommendations, and ordering information.
| Detection voltage tolerance | +1.5% / +2.5% |
|---|---|
| Supply voltage range | -0.3 V to 10 V (VDD) |
| Typical supply current | 5 pA |
| Output circuit | N‑channel open drain |
The typical supply current is 5 pA.
The reset delay time can be set with the CT pin's external capacitance.
The watchdog timer operates with VDD between 2.5 V and 10 V.