1 Features

1• Extremely-Low Quiescent Current: 0.62 μA at VIN

= 2.6 V

• High Accuracy Threshold Voltage (±2.5%)

• Open-Drain Output

• Programmable Output Delay by External

Capacitor (130 ms Typical With 0.1 μF)

• Input Voltage Range: 1 V to 6 V

• Pin-for-Pin Compatible With MC33465

2 Applications

• Portable Electronics

• Low-Battery Detection

• Microprocessor Reset Controllers

• Power Fail Indicators

• Battery Backup Detection

3 Description

The LM8365 device is a micropower undervoltage

sensing circuit that is ideal for use in battery-powered

microprocessor based systems, where extended

battery life is a key requirement.

Threshold voltages of 2.7 V and 4.5 V are available

with an active-low, open-drain output. These devices

feature a very-low quiescent current of 0.65 μA

typical. The LM8365 features a highly accurate

voltage reference, a comparator with precise

thresholds and built-in hysteresis to prevent erratic

reset operation, a time delayed output which can be

programmed by the system designer, and specified

Reset operation down to 1 V with extremely-low

standby current.