STC3100 Datasheet | STMicroelectronics

Features - Battery voltage monitoring - Internal temperature sensor - Coulomb counter with 12/14-bit AD converter, +/- 80 m V input voltage range - Internal or external 32768 Hz time base - I2C interface for gas gauge monitoring and device control - 32-RAM bytes - 8-byte unique device ID - One general-purpose I/O Applications - Cellular phones, PDA, MP3 players, cordless phones - Digital cameras, USB appliances, Bluetooth devices Description The STC3100 monitors the critical parameters of a single-cell Li-Ion battery (voltage, temperature and current) and includes hardware functions to implement a gas gauge for battery charge monitoring, based on a programmable 12- to 14-bit A/D converter. With a typical 30 milli Ohms external sense resistor, the battery current can be up to 2.5 A and the accumulator system provides a capacity up to +/-7000 m Ah with a resolution of 0.2 m Ah. The device is programmable through the I2C interface. Mini SO-8 (Plastic micropackage) DFN8 3x3 (Plastic micropackage) Pin connections (top view) IO0 1 ROSC 2 SDA 3 SCL 4 8 VIN 7 VCC 6 CG 5 GND January 2009 Rev 1 1/21 .st. Block diagram Block diagram Figure 1. STC3100 internal block diagram SCL SDA Accumulators and control registers 1.2 V reference 32 k Hz time base Oscillator AD converter 11 bits (unsigned) Temp...