Adafruit
Adafruit 12V Bias Voltage Boost Converter - TPS61040
· MPN: ADA5644
The Adafruit 12V Bias Voltage Boost Converter uses the TI TPS61040 to generate 12V DC from as little as 3V input. This compact breakout is ideal for generati...
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The Adafruit 12V Bias Voltage Boost Converter uses the TI TPS61040 to generate 12V DC from as little as 3V input. This compact breakout is ideal for generating the bias voltage needed by OLED displays, LED string backlights, and FLASH/EEPROM reprogramming — without requiring a separate 12V supply.
With a maximum output of approximately 40mA, this board is designed for low-current applications where a small amount of 12V is needed alongside an existing 3.3V or 5V supply. An Enable pin allows you to disable the output when not in use.
Key Features
- TPS61040 Boost Converter – Generates 12V DC from 2–6V input
- ~40mA Max Output – Suitable for bias voltage and low-current 12V applications
- Enable Pin – Pull low to disable the 12V output
- Compact Breakout – Pre-assembled with all required passive components
Ideal For
- OLED display bias voltage generation
- LED string backlight driving
- FLASH/EEPROM reprogramming voltage
- Projects needing a small 12V supply from a 3.3V or 5V source
Package Contents
- 1× Adafruit 12V Bias Voltage Boost Converter breakout (assembled)
- 1× Header strip
Specifications
- Boost Converter – TI TPS61040
- Input Voltage – 2–6V DC
- Output Voltage – 12V DC
- Max Output Current – ~40mA
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- boost converter
- 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.
- 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.
- DC
- 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.
- EEPROM
- A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- OLED
- OLED stands for organic light-emitting diode, a display type where each pixel produces its own light. It matters because OLED screens are thin, high-contrast and easy to read for small status displays, but they can be more sensitive to image burn-in than some other display types.
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