The TPS54308 is a 4.5-V to 28-V input voltage range, 3-A synchronous buck converter. The
device includes two integrated switching FETs, internal loop compensation and 5-ms internal soft
start to reduce component count.
By integrating the MOSFETs and employing the SOT-23 package, the TPS54308 achieves the
high power density and offers a small footprint on the PCB.
The TPS54308 operates in force continous conduction mode (FCCM) during light load
conditions, the switching frequency is maintained at an almost constant level over entire load
Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an
overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents
current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for
longer than the present time.
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