General Description

The TC51 is a very low power, open drain output, CMOS voltage detector with built-in delay. It is particularly well-suited for battery powered applications because of its extremely low 1µA operating current and small surface-mount packaging. Each part is lasertrimmed to the desired threshold voltage, which can be specified from 1.6V to 6.0V. The standard built-in output delay is 50msec-200msec.

The device includes a comparator, low-current high-precision reference, laser-programmed voltage divider, hysteresis circuit and output driver with digital delay timer.

Features

• Precise Detection Thresholds: ±2.0

• Small Package: 3-Pin SOT-23A

• Low Supply Current: Typ. 1µA

• Wide Detection Range: 1.6V to 6.0V

• Wide Operating Voltage Range: 0.7V to 10V

• Built-in Delay Circuit: 50msec to 200 msec

• Open-Drain Output

Applications

• Battery Voltage Monitoring

• Microprocessor Reset

• System Brown-out Protection