SS6821

www.DataSheet4U.com SS6821 Single-Cell Lithium-Ion Battery Protection IC FEATURES Reduction in board size with miniature SOT-23-5 package and few external components. Ultra-low quiescent current of 7µA (VCC=3.5V). Ultra-low power-down current of 0.6 µ A (VCC=2.2V). Precision over-charge protection voltage 4.35V ± 50mV for the SS6821A 4.30V ± 50mV for the SS6821B 4.25V ± 50mV for the SS6821C 4.20V ± 50mV for the SS6821D Built-in delay-time circuits for over-charge, overdischarge, and over-current protection. Load detection function during overcharge mode. Two detection levels for over-current protection. DESCRIPTION The SS6821 battery protection IC is designed to protect a lithium-ion battery from damage or reduced lifetime due to over-charge, over-discharge, and/or over-current in single-cell lithium-ion battery powered systems, such as cellular phones. The ultra-small package and few external components make the SS6821 ideal for integration into the limited space of of a battery pack. The accurate ±50mV over-charging detection voltage ensures safe and full-utilization charging. Four different specification values for over-charge protection voltage are provided for various protection requirements. The very low standby current drains little current from the cell while in storage. APPLICATIONS Protection IC for single-cell Lithium-Ion battery packs. TYPICAL APPLICATION CIRCUIT FUSE BATT+ R1 BATTERY 100 C1 0.1µF 5 VCC CS 4 2 3 GND OD OC 1 R3 R2 100K M1 SSM9926 SS682...