- Home Page /
- Industrial Supplies /
- Lab & Scientific Products /
- Lab Instruments & Equipment /
- Power Supplies /
- SparkFun Buck Regulator Breakout - 3.3V (AP34...
0 ratings
Item #:
116533682
SparkFun Buck Regulator Breakout - 3.3V (AP3429A) 2A Step-Down DC-DC Converter, Regulated 3.3V Output, 0.6in. x 0.5in. Copper pad for Heat
Item #:
116533682
SLE 406
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Saturday, September 19
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
The SparkFun 3.3V Buck Regulator Breakout features the AP3429A from Diodes Inc., a 2A step-down DC-DC converter with a versatile input voltage range of 2.7V to 5.5V.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Compact Design
Measuring only 1.00 x 1.00 inches, this regulator fits easily into tight spaces, making it ideal for small projects requiring a reliable 3.3V power supply without compromising board size.
Efficient Performance
Featuring a step-down DC-DC conversion with a 2A output, this regulator ensures high efficiency and stable power delivery, making it perfect for projects that demand consistent voltage and current.
Heat Regulation
Equipped with a 0.6in x 0.5in copper pad, this breakout board effectively dissipates heat, enhancing performance and reliability during operation, ensuring long-term stability for your electronics.
Product Details
| Power Source | Battery Powered |
| Item Weight | 0.01 Kilograms |
| Item Dimensions | 1.06 x 1.06 x 0.51 inches (2.7 x 2.7 x 1.3 cm) |
| Brand | SparkFun |
| Model Number | COM-21337 |
| UPC | 845156013371 |
| Mfr Part Number | COM-21337 |
| Manufacturer | SparkFun Electronics |
| Item dimensions L x W x H | 1.06 x 1.06 x 0.51 inches (2.7 x 2.7 x 1.3 cm) |
| Number of Items | 1 |
Who Should Buy?
-
Embedded Developers
Ideal for developers working on low-power embedded systems needing a stable 3.3V output for efficient power management.
-
DIY Electronics Projects
Great for hobbyists building custom circuits that require reliable voltage regulation from higher voltages to 3.3V.
-
Prototyping Applications
Useful for rapid prototyping, offering a compact and efficient way to regulate voltage in circuit designs.
-
High Current Devices
Not suitable for applications requiring more than 2A output, which may exceed the regulator's capacity.
Product Description
SparkFun Buck Regulator Breakout - 3.3V (AP3429A) 2A Step-Down DC-DC Converter, Regulated 3.3V Output, 0.6in. x 0.5in. Copper pad for Heat Regulation, Board Dimensions: (inches) 1.00 x 1.00
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the regulated output voltage?
Answer: The SparkFun 3.3V Buck Regulator Breakout provides a regulated output voltage of 3.3V. -
Question:
What is the maximum input voltage for the regulator?
Answer: The maximum input voltage for this regulator is 5.5V. -
Question:
Can I connect this regulator to an external power supply?
Answer: Yes, you can solder on a barrel jack for an external power supply or use the pre-assembled screw terminal.
SparkFun Power Supplies COM-21337 Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
0%
-
4 Star
100%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
JG
Jazz
Verified buyer
“Easy to use and always helpful and sorts any issues I've had past and present”
1 September 2026 · via Trustpilot
EK
Emmanuel
Verified buyer
“I always receive support when I engage customer service. Overall my experience with UBUY has been top notch. Keep up the good work.”
31 August 2026 · via Trustpilot
F
fnd
Verified buyer
“The delivery was fast and the product came undamaged and authentic.”
29 August 2026 · via Trustpilot
LC
Leana
Verified buyer
“Ubuy is extremely efficient and to order online is an easy process. The verity of products to buy is really unlimited! My order was urgent and I got it on time. The products are great! Thank you Ubuy!”
25 August 2026 · via Trustpilot
HL
Hengo
Verified buyer
“Fast, convenient and cheap. Great store!”
27 August 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
SLE 406
Order now and get it around Saturday, September 19
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- 2A step-down DC-DC converter for efficient voltage regulation.
- Versatile input voltage range of 2.7V to 5.5V.
- Pre-assembled screw terminal for easy, non-permanent connection.
- Option to solder barrel jack for external power supply.
- Power indication LED lights up when output is enabled.
- Compatible mounting holes for secure installation.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.