Product parameters

Funtion：Low Power Battery Monitor with Fixed 5.5% 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：±1.8%

General Description

The CN318 is a low power high accuracy battery monitor with fixed 5.5% hysteresis, and is specially designed for monitoring multi-cell Lithium-ion, LiFePO4, LTO and Sodium-ion 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 CN318 adopts fixed 5.5% 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 Lithium-ion Batteries Monitoring

l  Multi-cell LiFePO4 Batteries Monitoring

l  Multi-cell LTO Batteries Monitoring

l  Multi-cell Sodium-ion 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 5.5% 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