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DC512B - LTC4100EG | 3-/4-Cell Li-Ion Smart Battery Charger, DCIN = 15V-20V, Up to 4A Charge Current, (req. DC1223)

Demonstration circuit DC512B is a single battery switching step-down charge controller featuring the LTC4100. The recommended input power is 15 to 20V at 3.5A. A two-position jumper allows choice of protected output voltage range suitable for 3- and 4-Cell Li-ion batteries. Removal of the jumper allows full output voltage range. The maximum charge current is 4A.

The demo board is initially configured for 12.6V at 3A for popular 3-cell Li-ion battery packs. LTC4100 will automatically charge a Smart Battery to termination as soon as input power is applied with a battery connected prior to power up. A VOUT pin automatically provides power to the system load from the wall adapter or battery. Status LEDs are provided for CHG, ACP, SMBALERT and SMBus activity.

DC512B - Schematic


Companion Demo Boards

DC1223A-B - USB to SM-Bus/SPI Interface with Monitor