This tiny DC-DC buck-boost converter automatically steps voltage up or down to deliver a stable 5 V output from a 3–15 V input. About the size of a coin (17 × 13 mm), it's ideal for embedding in projects where space is tight and a reliable 5 V supply is needed.
With a maximum output current of 600 mA, up to 85% conversion efficiency, and a quiescent current of just 180 µA, this module suits battery-powered and portable applications.
Key Features
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Automatic Buck-Boost – Steps up or down to maintain 5 V output
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Wide Input Range – 3–15 V DC
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Stable 5 V Output – ±0.1 V accuracy, <50 mV ripple
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600 mA Peak Output – Sufficient for microcontrollers and sensors
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Ultra-Compact – Just 17 × 13 mm
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Low Quiescent Current – 180 µA no-load draw
Specifications
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Input Voltage: 3–15 V DC
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Output Voltage: 5 V (±0.1 V)
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Max Output Current: 600 mA (peak)
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Output Ripple: <50 mV (Vpp)
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Quiescent Current: 180 µA
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Max Efficiency: ~85%
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Operating Temperature: −40 to +85 °C
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Dimensions: 17 × 13 mm
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Service Life: 30,000 hours
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Isolation: Non-isolated
Pinout
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Vi+ – Power supply input (3–15 V DC)
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Vi− – Input ground
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Vo+ – 5 V output
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Vo− – Output ground
Ideal For
- DIY power banks and portable power supplies
- Microcontroller and sensor power regulation
- Battery-powered projects (single-cell Li-ion to 12 V)
Warning: Do not exceed 15 V input or sustain 600 mA output for extended periods, as this may reduce module life or cause damage. For higher load currents, increase the minimum input voltage to ensure stable operation.
Jargon buster
Plain-language definitions for the technical terms used above.
- boost converter
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A boost converter is a switching power circuit that raises a lower input voltage to a higher output voltage. It is used when a device needs more voltage than its power source provides, for example running a 5 V sensor from a 3.3 V supply.
- DC
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DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- microcontroller
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A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
