> **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-Mode Power Module (5.5~28V to 3.3V 3A)

**Type:** Product page · **SKU:** DFR0570 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/dc-dc-buck-mode-power-module-5-5-28v-to-3-3v-3a.html ([markdown](https://core-electronics.com.au/dc-dc-buck-mode-power-module-5-5-28v-to-3-3v-3a.html.md))

This is a DC-DC buck-mode power module, with input voltage range 5.5~28V and fixed output voltage/current 3.3V/3A. Its work frequency can reach to 0.5MHz. The module...

## Pricing

- **Price:** $5.95 (inc GST) — $5.41 AUD, exc GST
- **Quantity discounts:** 6+ $5.14 (exc GST) · 12+ $4.92 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 28.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0570:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DFR0570:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This is a DC-DC buck-mode power module, with input voltage range 5.5~28V and fixed output voltage/current 3.3V/3A. Its work frequency can reach to 0.5MHz. The module has high conversion and tiny body, convenient to embed.

Besides, it has steady output voltage, which can work long time without voltage shift and is suitable for the occasion with high requirements. The product can work with high-capacity and high-voltage batteries to DIY mobile powers. It can also be embedded into projects to provide multiple power options.

### Features

- Small size
- Stable performance
- Wide voltage range for a variety of DIY applications

### Applications

Power supply for controller main-board, DIY current source, floodlight, DIY toy car, communication device, digital radio

![](https://core-electronics.com.au/attachments/localcontent/DFR0570-001_690605708e9.jpg)

 ![](https://core-electronics.com.au/attachments/localcontent/DFR0570-002_2121887430b.jpg)### Specifications

- Input Voltage: 5.5~28Vdc
- Output Voltage: 3.3V
- Output Accuracy: ±0.1V
- The Maximum Output Peak Current: 3A
- Full-Load Output Ripple: Vpp<50mV
- No-Load Current: IQ 0.5mA
- Switch-Off Function: Not Support
- Operating Temperature: -20°C ~ +85°C
- Operating Humidity: 20% ~ 90% relative humidity, no condensation
- Storage Temperature: -40°C ~ +125°C
- Installation Method: Chip-mounting
- With or Without Isolation: Without Isolation
- Service Life: 30000h
- Dimension : 16.5×22mm/0.65×0.87inch

**NOTE**

1. The input voltage must within 28V.
2. Load current should not be in 3A or above for a long time, otherwise it will affect the service life of the module and even burn out.
3. If the load current is relatively high, you should increase the minimum input voltage to ensure normal operation.

### Contains

- DC-DC Buck-Mode Power Module (5.5~28V to 3.3V 3A) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0570-900x600.jpg)