Data brief

For further information contact your local STMicroelectronics sales office.

July 2011

Doc ID 018897 Rev 2

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STEVAL-ISV012V1

Up to 5 W solar battery charger for single-cell Li-ion and

Li-Pol batteries based on the SPV1040 and L6924D

Features

embedded maximum power point tracking

(MPPT)

– Proprietary “perturb & observe” MPPT

algorithm

– Up to 95% efficiency

– Very low input voltage (down to 0.3 V)

– Input reverse polarity protection

– Thermal shut-down

– Overcurrent protection

– Enable pin

solution with power MOSFET, reverse blocking

diode and battery thermal control

– 1% battery voltage regulation accuracy

– Up to 1 A charge current with 7% accuracy

– Closed loop thermal regulation protection

for output current control

– Low battery leakage current

– Embedded quasi-pulse charging mode

maximizes charge rate from solar panel

– Selectable 4.1 V and 4.2 V output voltage

– JEITA compliant with external circuit

– Programmable charge, fast charge (up to 1

A), pre-charge, termination current, pre-

charge mode voltage threshold, charge

timer

– Multifunction pin for flexible charge process

termination

– Status outputs to drive LEDs or host

processor interface

– Battery absence detection

– NTC or PTC thermistor interface for battery

temperature monitoring and protection

– RoHS compliant

STEVAL-ISV012V1

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