AIC1811

AIC1811 One-Cell Lithium-Ion Battery Protection IC n FEATURES l n DESCRIPTION The AIC1811 battery protection IC is designed to protect lithium-ion the battery from to damage or degrading lifetime due overcharge, and Less External Reduction in Board Size due to Miniature Package SOT-23-5 Components. l l Ultra-Low Quiescent Current at 7 µA (V CC =3.5V). Ultra-Low Power-Down Current at 0.4µA (V CC =2.3V). Precision Overcharge Protection Voltage 4.35V ± 50mV for the AIC1811A 4.30V ± 50mV for the AIC1811B 4.25V ± 50mV for the AIC1811C 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 AIC1811 into the limited space of battery pack. The accurate ±50mV overcharging detection l l Built-in Delay Time Circuits for Overcharge, Over-discharge, and Overcurrent Protection. Load Detection Function during Overcharge Mode. Two Detection Levels for Overcurrent Protection. voltage ensures safe and full utilization charging. Three 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. l l n APPLICATIONS l Protection IC for One-Cell Lithium-Ion Battery Pack. n TYPICAL APPLICATION CIRCUIT BATT+ FUSE R1 BATTERY 100 C1 0.1 µF 2 3 GND OD OC 1 R3 AIC1811 10M BATTM2 SI9926 5 VCC CS 4 R2 51K M1 SI...