Adafruit
Adafruit MiniBoost 5V @ 100mA Charge Pump - AP3602A
The Adafruit MiniBoost is a tiny charge-pump voltage booster that converts 3–5 V input to a regulated 5 V output at up to 100 mA. About the size of a linear ...
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The Adafruit MiniBoost is a tiny charge-pump voltage booster that converts 3–5 V input to a regulated 5 V output at up to 100 mA. About the size of a linear regulator, it's an easy drop-in solution for battery-powered projects running on 2–3 alkaline cells or a single lithium cell.
Based on the AP3602A charge pump IC, this board doubles the input voltage and then regulates down to 5 V. While not as efficient as inductor-based boost converters, charge pumps are compact, low-cost, and ideal for low-current applications where space is at a premium.
Key Features
- 5 V Regulated Output – Up to 100 mA from a 3–5 V input
- Charge Pump Topology – Compact, inductor-free design using the AP3602A
- Enable Pin – Pull low to disable the output and save power
- Ultra-Compact – Similar footprint to a TO-220 linear regulator
- Simple Wiring – IN, OUT, GND, and EN pins with included header
- Pre-Assembled – Fully soldered breakout board, just add header
Ideal For
- Battery-powered projects needing a small 5 V rail (2–3 AA/AAA or 1× LiPo)
- Powering low-current 5 V sensors, displays, or logic
- Space-constrained designs where an inductor-based booster won't fit
- Prototyping and breadboard-friendly power supplies
Package Contents
- 1× Adafruit MiniBoost 5V Charge Pump Breakout (assembled)
- 1× Header strip
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- LiPo
- A LiPo (lithium polymer) battery is a rechargeable lithium battery widely used in portable projects because it is light and compact. LiPo cells need correct charging circuitry and careful handling to stay safe, so equipment that supports LiPo generally includes charging or protection hardware suited to that battery type.
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