Description

Small linear regulator boards for stepping a higher supply down to 3.3V or a voltage you set. Eighteen fixed and six adjustable boards in a storage case.

Highlights

• Two types. 18 fixed 3.3V boards with a power LED, and 6 adjustable boards with a trimmer on the back.
• Adjustable from 1.25V. Set the output with the included screwdriver; it holds steady as long as the input stays about 1V above it.
• Three pins. GND, OUT and VIN on the same compact layout for both types.
• Light-duty use. As an LDO it turns the voltage difference into heat; each board can shed about 0.8W, so keep the drop and the current modest.

In the box

• 18 × AMS1117-3.3 board, fixed 3.3V, with power LED
• 6 × AMS1117-ADJ board, adjustable, trimmer on the back
• 1 × mini screwdriver for the trimmer
• Male header pins
• 1 × storage case

Specifications

• Input for 3.3V out: 4.4–12V
• Adjustable output: 1.25V and up
• Dropout: approx. 1V
• Heat dissipation: approx. 0.8W
• Board size: 20 × 11 × 5mm

Works with

Powering 3.3V boards and sensors, such as the ESP32, from a 5V or higher supply.