Product parameters

Funtion：Low Power, Dual-Voltage Detector

Vout Range：1.9V-6V

Vin Range：1.9V-6V

Operating Current：11μA Supply Current @VCC=3.7V

Package：SOT23-6

Threshold：1.211V

Threshold A：±2%

General Description

The CN303 is a two-channel voltage detector with 2 low power high accuracy comparators, and is specially designed for monitoring single or multi lithium-ion (Li+) cells, multi-cell alkaline, NiCd, NiMH and multi-cell lead acid batteries.

The CN303’s threshold accuracy is ±2%, and   offers 7.5% hysteresis which eliminates the output chatter sometimes associated with battery voltage monitors, usually due to input voltage noise or battery terminal voltage recovery after load removal. The CN303 has 2 inputs that can be configured by the external resistor divider. When the voltage at IN1(IN2) rises above the rising threshold, OUT1(OUT2) goes high; When the voltage at IN1(IN2) falls below the falling threshold, OUT1(OUT2) is driven to low.

The device has a low quiescent current of 11uA typical, and offers CMOS outputs.

The device is available in 6 pin SOT23 package.

Applications

l  Battery-powered Systems

l  Multi-cell Batteries Monitoring

l  Set-Top Boxes

l  DSPs, Microcontrollers Applications

l  Cell Phones and PDAs

Features

l  Two low power high accuracy comparators

l  Precise Threshold: ±2%

l  7.5% Hysteresis to Eliminate the Output Chatter

l  CMOS Outputs Can Drive LED or MCU Interface

l  11μA Supply Current @VCC=3.7V

l  Power Supply Transient Immunity

l  Operating Temperature Range

      -40°C to +85°C

l  Available in SOT23-6

l  Lead-free, Rohs-compliant and Halogen-free