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LTC4012-3 13-20Vin, 3-Cell Li-Ion (12.3V) 3A Battery Charger

The LTC4012-3 is a constant-current/constant-voltage battery charger controller. It uses a synchronous quasiconstant frequency PWM control architecture that will not generate audible noise with ceramic bulk capacitors. Charge current is set by external resistors and can be monitored as an output voltage across the programming resistor. With no built-in termination, the LTC4012-3 charges a wide range of batteries under external control.

Efficiency at DCIN = 20V