LTC4009 Datasheet (Linear Technology) - Multi-Chemistry Battery Charger

LTC4009, Multi-Chemistry Battery Charger

The LTC®4009 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 the combination of external sense, input and programming

LTC4009 Features

* n General Purpose Battery Charger Controller n Efficient 550kHz Synchronous Buck PWM Topology n ±0.5% Output Float Voltage Accuracy n Programmable Charge Current: 4% Accuracy n Programmable AC Adapter Current Limit: 3% Accuracy n No Audible Noise with Ceramic Capacitors n Wide Input Voltage Range: 6