4.5-V to 24-V input, 7-A synchronous step-down voltage regulator with on-time D-CAP3 control

The TPS51385 is a monolithic, 7-A, synchronous

buck converter with adaptive on-time D-CAP3 control mode. Integrated low

R DS(on) power MOSFETs enable high efficiency and offer ease-of-use

with minimum external component count for space-constrained power systems. Features

include an accurate reference voltage, fast load transient response, auto-skip mode

operation for light load efficiency, OOA light load operation with > 25-kHz

switching frequency, D-CAP3 control mode with good line, load regulation, and does

not require external compensation.

The TPS51385 provides complete protection OVP,

UVP, OCP, OTP and UVLO. The device is combined power-good signal and output

discharge function.

The TPS51385 supports both internal and external

soft-start time options. The device has the internal fixed soft-start time 1 ms. If

the application needs longer soft-start time, the external SS pin can be used to

achieve longer soft-start time by connecting the external capacitor.

The TPS51385 are available in a

thermally enhanced 12-pin QFN package and are designed to operate from –40°C to

125°C junction temperature.