The TPS53316 device provides a fully integrated 3.3-V or 5-V input, synchronous buck
converter with 16 total components, in 200 mm2 of PCB area. Due to low
RDS(on) and TI proprietary SmoothPWM skip mode of operation, it enables 96%
peak efficiency, and over 90% efficiency at load as light as 100 mA. It requires only two 22-µF
ceramic output capacitors for a power-dense, 5-A solution.
TPS53316 features 750-kHz, 1.1-MHz, and 2-MHz switching frequency selections, prebias
start-up, selectable internal softstart, output soft discharge, internal VBST switch, power good,
EN/Input UVLO, overcurrent, overvoltage, undervoltage, and overtemperature protections and all
ceramic output capacitor support. It supports input voltages from 2.9 V to 6 V, and no extra bias voltage is needed. The output voltage is adjustable from 0.6 V up to 0.8 × VIN.
TPS53316 is available in the 3 mm × 3 mm, 16-pin QFN package (Green RoHs compliant and Pb
free) and is specified from –40°C to 85°C.
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