SKU: TH2004
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Adafruit MiniBoost 5V 100mA Charge Pump - AP3602A is a tiny DC-DC booster board designed to give you a regulated 5V output from a 3V to 5V DC input. It is roughly the size of a small linear regulator module, but instead uses the AP3602A charge-pump converter to step voltage up for low-power 5V applications.
This board is a practical fit for battery-powered builds using 2 or 3 alkaline cells, or a single lithium battery, where you need a simple 5V rail without the size of an inductor-based boost converter. It can supply up to 100mA output current in typical use, making it suitable for lighter loads and compact portable projects.
Important: this is a charge-pump booster, not an inductor-based boost converter. That keeps the board small and cost-effective, but it is generally less efficient. It is best used when your current draw is modest and you are not trying to squeeze every last bit of battery life from the power source.
Technical details for the Adafruit MiniBoost 5V 100mA Charge Pump - AP3602A.
| Brand | Adafruit |
|---|---|
| Model | MiniBoost 5V @ 100mA Charge Pump |
| Main IC | AP3602A |
| Input Voltage | 3V to 5V DC |
| Output Voltage | 5V regulated |
| Output Current | Up to 100mA |
| Converter Topology | Charge pump |
| Enable Control | Output can be disabled by pulling the enable pin low |
Basic connection points for using the MiniBoost breakout in your project.
| Pin | Name | Function |
|---|---|---|
| 1 | IN | Connect 3V to 5V DC input supply |
| 2 | GND | Ground connection |
| 3 | OUT | Regulated 5V output |
| 4 | EN | Enable control; pull low to disable output |
Because charge pumps work by boosting and then regulating, they trade efficiency for simplicity and a very small footprint. This board is a good choice for sensor nodes, small control circuits, and other low-current 5V sections in battery-powered builds.
If your project needs significantly more current, Adafruit's PowerBoost-style boards are a better fit for loads in the 500mA to 2A range.
According to the product brief, you can supply 3V to 5V DC on the IN and GND pins. It then provides a regulated 5V output on the OUT pin.
The board is intended for 5V output at up to 100mA. The AP3602A datasheet also notes 250mA peak output current for up to 100ms, but the breakout is sold as a 100mA MiniBoost for normal use.
Yes, it is described as a good fit for battery-powered projects using 2 or 3 alkaline cells or a single lithium battery. It is best suited to lower-current designs rather than heavy 5V loads.
This breakout uses a charge-pump topology, which helps keep it very compact and low cost. The tradeoff is lower efficiency compared with an inductor-based boost converter, so it is better when current draw is not very high.
Yes. The enable pin can be pulled low to disable the 5V output, and the AP3602A datasheet specifies this shutdown input as active low.
The supplier brief lists one fully assembled breakout based on the AP3602A, plus a small bit of header. No other accessories or parts are specified in the provided product data.
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