Product parameters

Funtion：Low Power Battery Monitor with Fixed 10.8% Hysteresis

Vout Range：3.5V to 32V

Vin Range：3.5V to 32V

Operating Current：6uA @VCC=15V

Package：SOT23-5

Threshold A：Falling Threshold：±1% Rising Threshold：±2.8%

General Description

The CN319 is a low power high accuracy battery monitor with fixed 10.8% hysteresis, and is specially designed for monitoring multi-cell NIMH, LiFePO4, and Lead-acid batteries.

If the monitored voltage is lower than the falling threshold, open drain output  pin becomes low; If the monitored voltage is higher than the rising threshold,  pin becomes high after a delay of t_D (15ms min.).

The CN319 adopts fixed 10.8% hysteresis with respect to falling threshold, 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 device is available in 5 pin SOT23 package (SOT23-5).

 

 

Applications

l  Battery-powered Systems

l  Multi-cell NIMH Batteries Monitoring

l  Multi-cell LiFePO4 Batteries Monitoring

l  Multi-cell Lead-acid Batteries Monitoring

Features

l  Operating Voltage Range: 3.5V to 32V

l  Operating Current: 6uA @VCC=15V

l  SNS Pin Falling Threshold Accuracy: ±1%

l  SNS Pin Rising Threshold Accuracy: ±1.8%

l  Hysteresis is fixed 10.8% with respect to Falling Threshold

l  25ms typical Delay to Filter out the noise

l  25ms typical power-on reset pulse width

l  NMOS Open Drain Output which can be connected to MCU port directly or be used to control external MOSFET

l  Sensed Voltage Transient Immunity

l  Operating Temperature Range

      -40°C to +85°C

l  Available in SOT23-5

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