3V to 17V input, 4A, 1.2MHz synchronous step-down converter with FCCM mode

The TPS56425xx is a simple, easy-to-use, high efficiency, high power density,

synchronous buck converter with input voltage ranging from 3V to 17V and supports up

to 4A continuous current at output voltages

between 0.6V and 10V.

The TPS56425xx employs D-CAP3 control mode to provide a fast transient

response and to support low-ESR output capacitors with no requirement for external

compensation. The device can support up to 97% duty cycle operation.

The TPS564252B, TPS564252C operates in Eco-mode,

which maintains high efficiency during light loading. The TPS564257B, The

TPS564257C operates in FCCM mode, which keeps the same frequency and lower

output ripple during all load conditions. The TPS564255B operates in OOA mode,

which prevents audio noise generation. The devices integrate complete

protection through OVP, OCP, UVLO, OTP, and UVP with hiccup.

The device is available in 1.6mm ×

1.6mm SOT-563 package. The junction temperature is specified from –40°C to

125°C.