這款小型同步開關降壓(或穩壓)穩壓器採用高達38 V的輸入電壓,並將其有效降至5 V

該電路板僅測量0.7“×0.7”,但允許連續輸出電流高達 2.5 A. 85%至95%的效率使該穩壓器非常適合為傳感器或小型電機等中等負載供電。 通過動態改變開關頻率,可以在輕負載條件下保持高效率,並且可選的關斷引腳可實現幾百微安的低功耗狀態。


NT$ 420 含稅



The D24V25Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 38 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) with typical efficiencies between 85% and 95%, which is much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. The available output current is a function of the input voltage and efficiency (see the Typical efficiency and output currentsection below), but the output current can typically be as high as 2.5 A.

At light loads, the switching frequency automatically changes to maintain high efficiencies. These regulators have a typical quiescent (no load) current draw of less than 1 mA, and the ENABLE pin can be used to put the boards in a low-power state that reduces the quiescent current to approximately 10 µA to 20 µA per volt on VIN.

The modules have built-in reverse-voltage protection, short-circuit protection, a thermal shutdown feature that helps prevent damage from overheating, and a soft-start feature that reduces inrush current.



Size: 0.7″ × 0.7″ × 0.35″1
Weight: 2.6 g1

General specifications

Minimum operating voltage: 6 V2
Maximum operating voltage: 38 V
Continuous output current: 2.5 A3
Output voltage: 5 V
Reverse voltage protection?: Y
Maximum quiescent current: 0.7 mA4

Identifying markings

PCB dev codes: reg15a
Other PCB markings: 0J8475


  • Without included optional headers.
  • For small loads; this voltage rises approximately linearly up to around 6.4 V at 2.5 A output.
  • Typical. Actual continuous output current limited by thermal dissipation.
  • Typical worst case. The ENABLE pin can be used to reduce the quiescent current to a few hundred microamps.


Dimension diagram of the D24V25Fx 2.5A Step-Down Voltage Regulator (159k pdf)3D model of the D24V25Fx 2.5A Step-Down Voltage Regulator (5MB step)Step-Down Voltage Regulator D24V25Fx drill guide (32k dxf)

This DXF drawing shows the locations of all of the board’s holes.