LTC4121 Datasheet (Linear Technology) - 40V 400mA Synchronous Step-Down Battery Charger

LTC4121, 40V 400mA Synchronous Step-Down Battery Charger

The LTC®4121 is a 400mA constant-current/constantvoltage (CC/CV) synchronous step-down battery charger.

In addition to CC/CV operation, the LTC4121 regulates its input voltage to a programmable percentage of the input open-circuit voltage.

This technique maintains maximum power transfer with high im

LTC4121 Features

* nn Wide Input Voltage Range: 4.4V to 40V nn Temperature Compensated Input Voltage Regulation for Maximum Power Point Tracking (MPPT) nn Adjustable Float Voltage 3.5V to 18V (LTC4121) nn Fixed 4.2V Float Voltage Option (LTC4121-4.2) nn High Efficiency: Up to 95% nn 50mA to 400mA Programmable Charge C