AC / DC power supply: battery charger
SEMTECH
The SC801 is a fully integrated, single cell, constant-current/constant-voltage Lithium-Ion Li-Polymer battery charger management system.
Features
Fully integrated charger with
FET pass transistor
Reverse blocking diode
Sense resistor
Thermal protection
Input voltage range 4.2 V to 14 V
Complete voltage ranges
4.1 V
4.2 V
Adjustable
Programmable pre-charge, fast-charge, and termination current
Battery voltage controlled to 1% accuracy
Soft start for step load and adaptor plug-in
Up to 1.5 A continuous charge current
Charge-current monitor output from microcontroller or ADC interface
0.1 µA battery drain current in shutdown and monitor modes
Operates without a battery in regulated LDO mode
Low thermal impedance of 50°C/watt
Few external components
Over-current protection in all charging modes
Over-voltage protection
All output can drive LEDs and interface to host processor
Remote Kelvin sensing at the battery terminal
Small input & output filter capacitors
Status output communicates charging and end-of-charge cycle
Charges Li-ion, Li-polymer, NiCd and NiMH batteries
Now available in lead-free packaging
Small 4 mm x 4 mm 16-lead MLP package
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