AIC1821 Datasheet PDF | Analog Intergrations Corporation

Analog Intergrations Corporation AIC1821

The AIC1821 battery protection IC is designed to protect lithium-ion battery from damage or degrading the lifetime due to overcharge, overdischarge, and/or overcurrent for one-cell lithium-ion battery powered systems, such as cellular phones. The ultra-small package and less required external components make it ideal to integrate the AIC1821 into the limited space of battery pack. The accurate ±50mV overcharging detection voltage ensures safe and full utilization charging.

Part No.	AIC1821
Datasheet	AIC1821 Download
Manufacturer	Analog Intergrations Corporation
Description	One-Cell Lithium-Ion Battery Protection
Buy	Stock & Price

FEATURES

l Reduction in Board Size due to Miniature Package SOT-25 and Less External Components. l Ultra-Low Quiescent Current at 7µA (VCC=3.5V). l Ultra-Low Power-Down Current at 0.6µA (VCC =2.2V). l Precision Overcharge Protection Voltage 4.35V ± 50mV for the AIC1821A 4.30V ± 50mV for the AIC1821B 4.25V ± 50mV for the AIC1821C 4.20V ± 50mV for the AIC1821D l Built-in Delay Time Circuits for Overcharge, Over-discharge, and Overcurrent Protection. l Load Detection Function during Overcharge Mode. l Two Detection Levels for Overcurrent Protection. n

APPLICATIONS

l Protection IC for One-Cell Lithium-Ion Battery Pack. n

DESCRIPTION

Four different specification values for overcharge protection voltage are provided for various protection requirements. The very low standby current drains little current from the cell while in storage. n TYPICAL APPLICATION CIRCUIT FUSE BATT+ BATTERY M1 SI9926 R1 5 VCC 100 C1 0.1µF 2 GND 3 OD 4 CS OC 1 AIC1821 R3 10M M2 SI9926 Protection Circuit for One-Cell Lithium-Ion Battery R2 100K BATT- Analog Integrations Corporation 4F, 9 Industry E.