SA57608 Datasheet | Philips Semiconductors

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 m V (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 m V - Programmable overvoltage trip time delay - Trimmed undervoltage trip point to within ±25 m V - Very Low undervoltage quiescent sleep current 0.05 m A - Discharge overcurrent cutoff - Low operating current (10 m A) - 6-lead small outline package (SOP004) SIMPLIFIED SYSTEM DIAGRAM APPLICATIONS - Cellular phones - Personal digital assistants - Palmtop puters V+ 100 Ω VCC 5 0.01 µF 0.1 µF Li-ION CELL GND 6 DF 1 CF 3 CDLY 4 0.1 µF 1 kΩ V- DISCHARGE FET CHARGE FET SL01568 Figure 1. Simplified system diagram. 2003 Oct 29 Philips Semiconductors Product data One-cell Lithium-ion battery protection with over/undercharge and overcurrent protection ORDERING INFORMATION PACKAGE TYPE NUMBER SA57608XD DESCRIPTION Plastic small outline package; 6 leads; body width 1.8 mm VERSION SOP004 TEMPERATURE RANGE - 20 to +85 °C NOTE: The device has six protection parameter options, indicated by the X on the order code, and defined in the following table. TYPICAL PROTECTION PARAMETERS Part Number SA57608Y SA57608B SA57608C SA57608D SA57608E SA57608G Overcharge detection voltage (V) 4.350 ±0.050 4.280 ±0.025 4.295 ±0.025 4.350 ±0.050 4.275 ±0.025 4.280 ±0.025 Overcharge detection hysteresis voltage (m V) 180 180 150 180 200 200...