# Adjustable or fixed voltage step-down module, DC 5-15V, 3A

> DC-DC step-down module, reference 33330, with input 5-15VDC and fixed output (1.8V, 2.5V, 3.3V, 5V, 9V, 12V) or adjustable 0.8-15VDC via potentiometer (default ADJ mode). Fixed voltage is selected by bridging the corresponding pads. Supports up to 3A, recommended under 1.5A. Dimensions: 20 x 10.8 x 4.6 mm.

- Page: https://sigmanortec.ro/en/adjustable-or-fixed-voltage-step-down-module-dc-5-15v-3a
- Price: 6.76 RON
- Availability: In stock; 1-2 zile
- Reference: 33330 · EAN: 5945584896845
- Category: Electronic components > Step Down Modules
- Specifications: tension: AD; Supply Voltage: 5; Minimum Output Voltage: 1; Maximum Output Voltage: 15; Source Type: descend; Current Adjustment: Not; Voltage Adjustment: Yes; Adjustment Type: Variable or Fixed; Maximum Output Current: 1.5
- Package (shipping data): 0.002 kg
- Updated: 2026-08-25
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:25 (Europe/Bucharest)

## Description

Compact DC-DC step down converter, for stable power supply of modules and equipment from 5-15VDC, offers a choice of fixed output 1.8V, 2.5V, 3.3V, 5V, 9V, 12V or adjustable 0.8-15V via potentiometer, the selection of the fixed voltage is done quickly by joining the corresponding pads, supports up to 3A maximum and has small dimensions 20 x 10.8 x 4.6 mm.
DC-DC step-down voltage source module, 3A, step down.
The advantage of this module is that it allows setting it to fixed voltages or an adjustable voltage via a potentiometer. The setting is done by connecting the two pads corresponding to the desired voltage.
By default, the module is set to ADJ.
Specifications:
Input voltage: 5 - 15VDC
Fixed output voltage: 1.8V 2.5V 3.3V 5V 9V 12V
Adjustable output voltage (on ADJ): 0.8 - 15VDC
Current: 3A max, recommended under 1.5A
Dimensions mm: 20 x 10.8 x 4.6mm
Instructions:
The step-down converter is factory set to ADJ.
In the ADJ position, the output voltage is adjusted by the potentiometer located on the front of the step-down module.
The other pins set the output voltage to a fixed value of 12V, 9V, 5V, 3.3V, 2.5V or 1.8V.
To set the module to a fixed voltage, cut the trace on the ADJ pin (circled in red in the picture) and solder the two pads corresponding to the desired voltage. Example: for fixed 9V, solder the pads circled in blue in the picture below, after interrupting the trace on the ADJ pin.