2.5V to 5.5V input, 4A high-efficiency step-down converter in SOT-563 package

The TPS62A04B and TPS62A04AB are synchronous,

step-down, buck, DC/DC converters designed for high efficiency and compact design

size. The device uses integrated switches for constantly delivering an output

current of 4A. The device operates in pulse width modulation (PWM) mode with 2.2MHz

switching frequency at medium to high load. At light load, the TPS62A04B device

variant automatically enters a power save mode (PSM) to maintain high efficiency

over the entire load current range. The A variant of this device family (TPS62A04AB)

stays PWM mode at all times irrespective of the load condition. The device maintains

stable frequency and lowest ripple.

The TPS62A04B and TPS62A04AB use an external

resistor divider to set the output voltage. The internal soft-start circuit limits

the inrush current during start-up, and a power-good signal indicates correct output

voltage. Overcurrent protection combined with thermal shutdown protect device and

application. The devices are available in an SOT563 package.