# DC-DC Buck Mini Module, Compact Size And Easy To Integrate (3.3V/5V, up to 4A)

**Type:** Product page · **SKU:** WS-29035 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/dc-dc-buck-mini-module-3-3v-5v.html ([markdown](https://core-electronics.com.au/dc-dc-buck-mini-module-3-3v-5v.html.md))

DC-DC Buck Mini Module, Compact Size And Easy To Integrate, Configurable 3.3V Or 5V buck voltage regulation output, Immersion Gold Process...

## Pricing

- **Price:** $5.05 (inc GST) — $4.59 AUD, exc GST
- **Quantity discounts:** 10+ $4.41 (exc GST) · 25+ $4.27 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 75 today, and up to 300 more in 12–19 days.

## Description

Designed for seamless integration into compact electronics projects, the DC-DC Buck Mini Module is a versatile and reliable power solution for applications requiring stable voltage regulation. With configurable 3.3V or 5V output and wide 5–36V input support, this module is ideal for embedded systems, sensor arrays, and educational electronics kits.

### Specifications

 | Mode | 5V mode (default) | 3.3V mode (via resoldering 0R resistor) |
|---|---|---|
| Input Voltage | DC 6–36V | DC 5–36V |
| Output Voltage | DC 5V | DC 3.3V |
| Operating Current | 0A–4A (up to 5A with adequate cooling) |
| Switching Frequency | 500KHz |
| Conversion Efficiency | 90% |
| Dimensions | 33 × 16 × 5.7 mm |

### How to Use

The module arrives pre-configured for 5V output. For projects requiring 3.3V, simply resolder the onboard 0-ohm resistor to the designated 3.3V pad. Connect the input voltage (VIN+/VIN−) within the supported range and retrieve the regulated output from the VOUT(+) and GND(−) terminals.

#### Pinout Overview

 | Left Side | Right Side |
|---|---|
| VIN+ | Power input positive | VOUT(+) | Power output positive |
| VIN− | Power input negative | GND(−) | Power output negative |

### Resources

- Wiki

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/S/WS-29035-1.jpg)