SC803 - Semtech Corporation

SC803 Fully Integrated High Current Lithium-Ion Battery Charger System

The SC803 is a fully integrated, single cell, constant-current constant-voltage Lithium-Ion battery charger management system. The SC803 has built in intelligence and extreme functionality. When the battery voltage is below 2.8V the charger operates in a pre-charge mode with a charging current of up to 125mA based on the ITERM pin resistor. This pre-charge m.

Features

‹ Fully integrated charger with FET pass transistor, reverse-blocking diode, sense resistor and thermal protection ‹ Complete voltage ranges of 4.1V, 4.2V & adjustable ‹ Programmable precharge, fastcharge & termination current ‹ Battery voltage controlled to 1% accuracy ‹ Soft-start for step load and adaptor plug-in ‹ Up to 1.5A continuous charge current ‹ Charge current monitor output from microcontroller or ADC Interface The part also features current termination, ending the charge cycle when the battery is charged and the charge ‹ Input voltages range from 4.2V to 7V current drops below th.