--- product_id: 636751081 title: "SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint" brand: "sparkfun" price: "VT6495" currency: VUV in_stock: true url: https://www.desertcart.vu/products/636751081-sparkfun-babybuck-regulator-breakout-3-3v-ap63203-regulate-power-2a store_origin: VU region: Vanuatu --- # 2A continuous output current 0.4in x 0.5in ultra-compact footprint Wide 3.8V-32V input voltage range SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint **Brand:** sparkfun **Price:** VT6495 **Availability:** ✅ In Stock ## Summary > ⚡ Compact power, big impact — regulate like a pro! ## Quick Answers - **What is this?** SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint by sparkfun - **How much does it cost?** VT6495 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/636751081-sparkfun-babybuck-regulator-breakout-3-3v-ap63203-regulate-power-2a) ## Best For - sparkfun enthusiasts ## Why This Product - Trusted sparkfun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Space-saving Design:** Ultra-compact 0.4in x 0.5in footprint fits seamlessly into any sleek setup. - • **EMI-Optimized Operation:** Proprietary gate driver and Frequency Spread Spectrum tech minimize interference for clean, stable output. - • **Power-packed Performance:** Delivers a robust 2A continuous current for reliable, high-demand projects. - • **Wide Voltage Compatibility:** Handles inputs from 3.8V up to 32V, perfect for versatile power sources. - • **Efficiency that Saves Energy:** Up to 88% efficiency at light loads means less heat, longer battery life, and smarter power use. ## Overview The SparkFun BabyBuck Regulator Breakout-3.3V (AP63203) is a high-efficiency, low-profile synchronous buck converter designed for professional-grade power regulation. Supporting a wide input voltage range of 3.8V to 32V and delivering up to 2A continuous output current, it features advanced EMI reduction technologies, ultralow quiescent current, and comprehensive protection circuitry—all packed into a tiny 0.4in by 0.5in footprint. Ideal for millennial managers and tech-savvy pros who demand reliable, space-conscious power solutions. ## Description Who doesn't occasionally need power regulation? We certainly do, so we've designed the SparkFun BabyBuck Regulator Breakout to help us with just such a task. Featuring the AP63203 from Diodes Inc, this breakout board takes advantage of a 2A synchronous buck converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this snuggled up in a low-profile, TSOT26 package that's integrated into a 0.4in by 0.5in board.Unlike it's sibling, the BabyBuck sacrifices power option flexibility for space. Don't worry, though, because you can still use the plated through holes for input and output power. With some simple right-angle headers, you'll be up and running in no time.Frequency Spread Spectrum (FSS) reduces EMI and a proprietary gate driver scheme resists switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further erases high-frequency radiated EMI noise.Features:Low-Profile FootprintVIN 3.8V to 32VVOUT 3.3VUp to 2A Continuous Output Current0.8V ± 1% Reference Voltage22µA Ultralow Quiescent CurrentSwitching Frequency - 1.1MHzSupports Pulse Frequency Modulation (PFM)Up to 80% Efficiency at 1mA Light LoadUp to 88% Efficiency at 5mA Light LoadFixed Output Voltage - 3.3VProprietary Gate Driver Design for Best EMI ReductionFrequency Spread Spectrum (FSS) to Reduce EMIPrecision Enable Threshold to Adjust UVLOProtection CircuitryOvervoltage ProtectionCycle-by-Cycle Peak Current LimitThermal Shutdown ## Features - Who doesn't occasionally need power regulation? We certainly do, so we've designed the SparkFun BabyBuck Regulator Breakout to help us with just such a task. Note: Smaller buck board converter only. Headers not included. - Featuring the AP63203 from Diodes Inc, this breakout board takes advantage of a 2A synchronous buck converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this snuggled up in a low-profile, TSOT26 package that's integrated into a 0.4in by 0.5in board. - Features: Low-Profile Footprint; VIN 3.8V to 32V; VOUT 3.3V; Up to 2A Continuous Output Current; 0.8V ± 1% Reference Voltage; 22µA Ultralow Quiescent Current; Switching Frequency - 1.1MHz - Also features: Supports Pulse Frequency Modulation (PFM). Up to 80% Efficiency at 1mA Light Load, Up to 88% Efficiency at 5mA Light Load; Fixed Output Voltage - 3.3V; Proprietary Gate Driver Design for Best EMI Reduction - More features: Frequency Spread Spectrum (FSS) to Reduce EMI; Precision Enable Threshold to Adjust UVLO; Protection Circuitry, Overvoltage Protection, Cycle-by-Cycle Peak Current Limit, Thermal Shutdown ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | SparkFun | | Item Weight | 0.634 ounces | | Product Dimensions | 1.57 x 1.46 x 0.2 inches | | Item Dimensions LxWxH | 1.57 x 1.46 x 0.2 inches | | Processor Brand | ARM | | Number of Processors | 1 | | Manufacturer | SparkFun Electronics | | ASIN | B09KTF9BTR | | Date First Available | November 10, 2021 | ## Product Details - **Brand:** SparkFun - **Model name:** BabyBuck Regulator Breakout - **Included components:** Fixed Output Voltage - 3.3V - **CPU manufacturer:** ARM - **Processor count:** 1 ## Images ![SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint - Image 1](https://m.media-amazon.com/images/I/51GB3Aj0TnL.jpg) ![SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint - Image 2](https://m.media-amazon.com/images/I/618N5bXhHrL.jpg) ![SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint - Image 3](https://m.media-amazon.com/images/I/61FMUZg6XlL.jpg) ![SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint - Image 4](https://m.media-amazon.com/images/I/41Z0sb+cTRL.jpg) ![SparkFun BabyBuck Regulator Breakout-3.3V (AP63203)- Regulate power- 2A synchronous buck converter- wide input 3.8V-32V- high-efficiency step-down DC/DC conversion- low profile 0.4in x 0.5in footprint - Image 5](https://m.media-amazon.com/images/I/51G+WvZXuKL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/636751081-sparkfun-babybuck-regulator-breakout-3-3v-ap63203-regulate-power-2a](https://www.desertcart.vu/products/636751081-sparkfun-babybuck-regulator-breakout-3-3v-ap63203-regulate-power-2a) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-12*