Philips SA57608
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.GENERAL DESCRIPTION
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 SA57608 2 VM 0.1 µF 1 kΩ V– DISCHARGE FET CHARGE FET SL01568 Figure 1. Simplified system diagram. 2003 Oct 29 2 Philips Semiconductors Product data One-cel...