SA57608

INTEGRATED CIRCUITS SA57608 One-cell Lithium-ion battery protection with over/undercharge and overcurrent protection Product data Supersedes data of 2001 Oct 03 2003 Oct 29 Philips Semiconductors Philips Semiconductors Product data One-cell Lithium-ion battery protection with over/undercharge and overcurrent protection SA57608 GENERAL DESCRIPTION The SA57608 is a single-cell Li-ion protection IC, and is an improved version of the NE57600, with different pinout. Its over and under voltage accuracies are trimmed to within ± 25 mV (5%) over the entire battery pack operating temperature range. The SA57608 is available in various over and undervoltage limits. There is a discharge overcurrent protection circuit which can protect the battery pack against an accidental short-circuit. The overcharge trip point has a time delay which can be programmed externally. It is packaged in a space-saving 6-lead small outline package and requires two external N-channel MOSFETs and a minimum of passive parts. FEATURES Trimmed overvoltage trip point to within ±25 mV Programmable overvoltage trip time delay Trimmed undervoltage trip point to within ±25 mV Very Low undervoltage quiescent sleep current 0.05 mA Discharge overcurrent cutoff Low operating current (10 mA) 6-lead small outline package (SOP004) SIMPLIFIED SYSTEM DIAGRAM APPLICATIONS Cellular phones Personal digital assistants Palmtop computers V+ 100 Ω VCC 5 0.01 µF 0.1 µF Li-ION CELL GND 6 DF 1 CF 3 CDLY 4...