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Small green circuit board with a USB-A port and screw terminals, rectangular shape, matte finish

JacobsParts Inc.

JacobsParts Inc. USBMOD-F 15W 5.2V 3A Buck Module 6-36V Input

SKU CH-6B1K-HDJD8

Converts 6–36 V DC to a 5.2 V USB port with 3 A peak output, 96 % efficiency and built-in protection

  • TypeStep Down (Buck) Voltage Regulator
  • Input Voltage5 V
  • Current Rating3 A
  • Power Rating15 W
  • Charge phones from car, solar or battery packs with a 6–36 V input range
  • Built-in over-current, thermal and short-circuit protection guards connected devices
  • Compact 37 × 16 × 9.7 mm board fits tight enclosures and project boxes
  • Up to 96 % conversion efficiency reduces heat and extends source runtime
  • Delivers 5.2 V at 3 A peak and 2 A sustained for reliable USB power

Compact USB charging module for DC power sources

This step-down buck regulator converts any 6-36V DC supply into a standard USB charging port rated at 5.2V. It suits hobbyists adding USB power to automotive, solar or industrial projects where only higher-voltage DC is available. The tiny 37 by 16 by 9.7 mm board fits inside tight enclosures. Over-current, thermal and short-circuit protection guard connected devices.

Sustained output drops to 2A with high efficiency

Peak current reaches 3A, yet continuous delivery settles at 2A to keep thermals manageable. Conversion efficiency climbs to 96 percent, so waste heat stays low during extended charging sessions. The 150 kHz switching frequency helps maintain stable voltage under varying loads. Builders should plan for the lower sustained figure when sizing the upstream supply.

Solder-in installation with basic polarity care

Four through-hole pads accept standard headers or direct wiring for permanent mounting. Correct input polarity is essential; reversing the supply will damage the module. The wide input range tolerates 12V and 24V vehicle systems without adjustment. Users needing quick-disconnect plugs must add their own connectors.

Highlights

  • Charge phones from car, solar or battery packs with a 6–36 V input range
  • Built-in over-current, thermal and short-circuit protection guards connected devices
  • Compact 37 × 16 × 9.7 mm board fits tight enclosures and project boxes
  • Up to 96 % conversion efficiency reduces heat and extends source runtime
  • Delivers 5.2 V at 3 A peak and 2 A sustained for reliable USB power

Specifications

BrandJacobsParts
ModelUSBMOD-F
TypeStep Down (Buck) Voltage Regulator
Input Voltage5 V
Current Rating3 A
Power Rating15 W

Questions about this item

Does the 150KHz switching frequency and 96% efficiency keep heat low during all-day use?

The module runs at 150KHz with up to 96% conversion efficiency, so waste heat stays small even at the 2A sustained output.

What DC source and wiring must I already have to power the 6-36V input?

You need a 6-36V DC supply such as a 12V or 24V battery or adapter, plus wires to connect its terminals to the module’s input pads.

Will the 5.2V 3A peak output charge a legacy 5V 1A phone without damaging it?

Yes, the 5.2V rail only delivers the current the phone requests, so a 1A handset draws 1A safely.

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