Texas Instruments DC/DC controllers are non-isolated, switching voltage regulators that require an external MOSFET to set the output current, which allows you to optimize efficiency and performance in your design. When matched with TI NexFET™ MOSFETs, designers can achieve best-in-class Rdson and gate-charge performance.
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TPS51285A : Ultra-Low Quiescent (ULQT), Dual Synchronous Step-Down Controller with 5V and 3.3V LDOs
TPS51285B : Ultra-Low Quiescent (ULQT), Dual Synchronous Step-Down Controller with 5V and 3.3V LDOs
TPS43060 : Low Iq, Synchronous Boost Controller with Wide Input Voltage and 7.5V Gate Drive for Standard FETs