SC801 Datasheet | SEMTECH

Description Fully Integrated High Current Lithium-Ion Battery Charger System Features K Fully integrated charger with FET pass transistor, K K K K K K K K K K K K K K K K K K K K K K K K K reverse-blocking diode, sense resistor and thermal protection 4.1V, 4.2V & Adjustable Output Voltage 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 Input voltages range from 4.2V to 14V 0.1µA Battery leakage in shutdown and monitor modes Operates without a battery in regulated LDO mode Small 4mm x 4mm 16 lead MLP package °C/watt Low thermal impedance of 50° Few external ponents Over current protection in all charging modes Over voltage protection All outputs able to drive LED’s and interface to host processor Remote Kelvin sensing at the battery terminal Small input & output filter capacitors Status output municates charging and end of charge cycle Now Available in Lead-Free Packaging Charges Li-Ion, Li-Polymer, Ni Cd and Ni MH Batteries 5+& The SC801 is a fully integrated, single cell, constant-current/constant-voltage Lithium-Ion Li-Polymer battery charger management system. The SC801 has built in intelligence and extreme functionality. When the battery voltage is below 2.8V the charger operates in a precharge mode with a charging current of up to 125m A based on the ITERM pin resistor. This pre-charge mode is set to limit power dissipation due to an undercharged battery. When the battery voltage exceeds 2.8V, the charger enters a fast charge mode. In this mode, the SC801 delivers up to 1.5A to the battery based on the IPRGM pin resistor. The part also Features current termination, ending the charge cycle when the battery is charged and the charge current drops below the current programmed by the ITERM pin resistor. In addition, the charge current can be monitored by the voltage...