Product parameters

Funtion：Low Power Window 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 CN305 is a single adjustable window detector with separate under/overvoltage outputs. It consists of 2 comparators and a voltage reference, 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 comparators’ 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 CN305 has 2 inputs that can be configured by the external resistor divider. When the voltage at OVIN rises above the rising overvoltage threshold,  goes low. When the voltage at UVIN falls below the falling under voltage threshold,  is driven to low.

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

The device is available in 6 pin SOT23 package.

Applications

l  Battery-powered Systems

l  Multi-cell Batteries Monitoring

l  Window Detector

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  Open-Drain Outputs

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