TC105 Datasheet (Microchip Technology) - PFM/PWM Step-Down DC/DC Controller

TC105, PFM/PWM Step-Down DC/DC Controller

The TC105 is a step-down (Buck) switching controller that furnishes output currents of up to 1A (max) while delivering a typical efficiency of 92%.

The TC105 normally operates in pulse width modulation mode (PWM), but automatically switches to pulse frequency modulation (PFM) at low output loads for

TC105 Features

* 57A (Typ) Supply Current

* 1A Output Current

* 0.5A Shutdown Mode

* 300kHz Switching Frequency for Small Inductor Size

* Programmable Soft-Start

* 92% Typical Efficiency

* Small Package: 5-Pin SOT-23A Applications

* Palmtops