> **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

# Buck Converter - 6-20V to 5V/3A

**Type:** Product page · **SKU:** COM-18375 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/buck-converter-6-20v-to-5v-3a.html ([markdown](https://core-electronics.com.au/buck-converter-6-20v-to-5v-3a.html.md))

This is a high grade DC Buck converter that inputs 6 to 12V and outputs 5V up to 3A or 15W. With good thermal performance and protection, this DC block is...

## Pricing

- **Price:** $21.30 (inc GST) — $19.36 AUD, exc GST
- **Quantity discounts:** 5+ $18.78 (exc GST) · 25+ $18.40 (exc GST) · 100+ $17.62 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 04.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=COM-18375:1` (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/COM-18375:1.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 high grade DC Buck converter that inputs 6 to 12V and outputs 5V up to 3A or 15W. With good thermal performance and protection, this DC block is perfect for battery applications (such as SLAs or LFPs) that need to power a USB or 5V device even while the input is varying (battery charge/discharge). 89% efficiency makes this a high-efficiency, plug and play, DC Step Down solution.

If you need to plug it into a car, check out this [male automotive socket](https://core-electronics.com.au/anderson-to-merit-plug-adaptor-lead-8awg.html), and cut the Anderson connector off.

### Specifications

- Input Voltage: 6 to 20VDC
- Input Current: 3ADC max
- Quiescent Current: 12.5mA
- Efficiency: 89%
- Output Voltage Accuracy: ±1%
- Load Regulation: ±2%
- Ripple: 30mVp-p
 
### Resources

- [WG-12S0503 Datasheet](https://core-electronics.com.au/attachments/localcontent/WG-12S0503_21028c336b7.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_763.jpg)