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WD1502 is a high efficiency, synchronous step down DC-DC converter. It can deliver up to 2A of continuous output current with operating at an input range of 4.5V-28V. The internal synchronous power switches provide high efficiency without the use of an external Schottky diode. WD1502 operates at 650 kHz fixed switching frequency with Pulse-Width-Modulation (PWM) and enters Pulse-Skipping-Modulation (PSM) operation at light load current to maintain high efficiency and low output ripple over the entire load current range.

The WD1502 has short-circuit protection, thermal protection, and input under voltage lockout.

The WD1502 is available in TSOT-23-6L package. Standard products is Pb-Free and Halogen-Free.

- 12V, 24V Distributed Power-Bus Supply
- Industrial Applications
- White Goods
- Consumer Application


Wide 4.5V~28V Operating Input Range

Typical 650 kHz Switching Frequency

2A continuous output current

Low 2-μA Shutdown, 60-μA Quiescent Current

Internal 5 mS Soft-Start

Peak Efficiency > 94%

150 mΩ Internal Power HS MOSFET Switch

75 mΩ Internal Synchronous LS MOSFET Switch

Cycle-by-Cycle Over Current Protection

Order Information
Ordering No. Vout(V) Package
WD1502F-6/TR N/A TSOT-23-6L