> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

## How to buy

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## 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)