DESCRIPTION

A4809 is a series of high precision voltage detector with ultra-low current consumption (4.5uA typ. at VIN=3.0V) and a built-in delay circuit. It can work at very low voltage, which makes it perfect for system reset.

A4809 is composed of high precision voltage reference, comparator, delay circuit, output driver and resistor array. Internally preset detect voltage has a low temperature drift and requires no external trimming.

Two type of output, CMOS and N-channel open-drain are available.

A4809 is available in SOT-23S package.

FEATURES

 High-Precision Detection Voltage: ±3

 Detection Voltage：2.63V and 2.93V

(customized other voltages)

 Built-in Power on Reset Delay time circuit:

Refer to Selection Guide

 Operating Voltage Range:1.2V~6V

 Ultra-low current consumption: 4.5uA typ.

(at VIN＝3.0V)

 Two Output Forms: CMOS (Active Low) and N-channel open-drain (Active Low)

 Available in SOT-23S package

APPLICATION

 Power monitor for portable equipment such as PDA, DSC, Mobile phone,Notebook,MP3

 CPU and Logic Circuit Reset

 Battery Checker

 Battery Back-up Circuit

 Power Failure Detector