TPS54331DR

The TPS54331 device is a 28-V, 3-A nonsynchronous buck converter that integrates a low
RDS(on) high-side MOSFET. To increase efficiency
at light loads, a pulse skipping Eco-mode feature
is automatically activated. Furthermore, the 1-μA
shutdown supply-current allows the device to be
used in battery-powered applications. Current mode
control with internal slope compensation simplifies
the external compensation calculations and reduces
component count while allowing the use of ceramic
output capacitors. A resistor divider programs the
hysteresis of the input undervoltage lockout. An
overvoltage transient protection circuit limits voltage
overshoots during start-up and transient conditions.
A cycle-by-cycle current-limit scheme, frequency
foldback and thermal shutdown protect the device
and the load in the event of an overload condition.
The TPS54331 device is available in an 8-pin SOIC
package and 8-pin SO PowerPAD integrated circuit
package that have been internally optimized to
improve thermal performance.