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Home > Step Down Switching Regulators
UD38501 Datasheet






The UTC UD38501 is a monolithic synchronous buck regulator.

The device integrates internal high side and external low side

power MOSFETs, and provides 5A of continuous load current over

a wide input voltage of 8V to 38V. Current mode control provides

fast transient response and cycle-by-cycle current limit.

An internal soft-start prevents inrush current at turn-on, provides

a very compact solution with minimal external components.





* Wide 8V to 38V Operating Input Range

* Integrated 80m high side Power MOSFET Switches

* Output Adjustable from V FB (1V) to 20V

* Up to 95% Efficiency

* Internal Soft-Start

* Stable with Low ESR Ceramic Output Capacitors

* Fixed 160KHz Frequency

* Cycle-by-Cycle Over Current Protection

* Input Under/Over Voltage Lockout 

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