SKU: TH1996
This compact buck converter based on the MPM3610 is a powerhouse for modern 3.3V electronics. It accepts a wide 4.5V–21V input range and delivers a rock-solid 3.3V output at up to 1.2A, making it ideal for powering 3.3V microcontrollers, sensors, wireless modules, and embedded systems from batteries, adapters, or higher-voltage rails.
This compact buck converter based on the MPM3610 is a powerhouse for modern 3.3V electronics. It accepts a wide 4.5V–21V input range and delivers a rock-solid 3.3V output at up to 1.2A, making it ideal for powering 3.3V microcontrollers, sensors, wireless modules, and embedded systems from batteries, adapters, or higher-voltage rails.
What sets this board apart is its high input voltage tolerance—most small buck converters top out around 6V, but the MPM3610 comfortably handles up to 21V while maintaining excellent 90–95% efficiency. The converter runs at a fixed 2 MHz PWM frequency and uses a fully integrated inductor, resulting in a very small footprint with low ripple and high efficiency—perfect for space-constrained and portable projects.
Designed as a pin-compatible drop-in replacement for the LM1117-3.3V (TO-220) linear regulator, this breakout lets you instantly upgrade existing designs to a far more efficient switching regulator without redesigning your PCB. An onboard EN (Enable) pin allows you to completely shut down the output when not in use, helping extend battery life in low-power applications.
Technical details for Adafruit MPM3610 3.3V Buck Converter Breakout Board - 4.5 to 21V Input 1.2A Output
| Specification | Details |
|---|---|
| Converter IC | MPM3610 |
| Input Voltage Range | 4.5V to 21V DC |
| Output Voltage | 3.3V (fixed) |
| Maximum Output Current | Up to 1.2A across full input range |
| Efficiency | Approximately 90–95% |
| Switching Frequency | 2 MHz fixed-frequency PWM |
| Inductor | Fully integrated inductor |
| Enable Control | EN pin for complete output shutdown |
| Pin Compatibility | Pin-compatible with LM1117-3.3V (TO-220) |
| Board Type | Fully assembled and tested breakout board |
| Breadboard Support | Includes header pins for breadboard use |
| Applications | 3.3V microcontrollers, sensors, wireless modules, portable and battery-powered projects |
| Pin Name | Description |
|---|---|
| VIN | Power input pin. Supply between 4.5V and 21V DC. This pin accepts higher voltages than most small buck converters. |
| GND | Common ground for power and logic. |
| VOUT | Regulated 3.3V output, capable of delivering up to 1.2A current. |
| EN | Enable pin. Pull LOW to disable the regulator and shut down the output completely. Pull HIGH or leave floating to enable. |
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