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LTC1871 DC-DC Boost Converter Module — 3–35V Input, 3.5–35V Output, Built-in Voltmeter
LTC1871 DC-DC Boost Converter Module 3–35V Input, 3.5–35V Output, Built-in Voltmeter
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LTC1871 DC-DC Boost Converter Module — 3–35V to 3.5–35V, Built-in Voltmeter
This boost converter module is built around the LTC1871 wide input range current-mode PWM controller from Analog Devices (Linear Technology). It steps up input voltages from 3V to 35V to an adjustable output of 3.5V to 35V, with a built-in digital voltmeter for real-time output voltage monitoring. Suitable for DIY bench power supplies, battery-powered boost regulators, and voltage step-up applications where the output must exceed the input.
Key Specifications
| Parameter | Value |
|---|---|
| Controller IC | LTC1871 |
| Input Voltage | 3V – 35V |
| Output Voltage | 3.5V – 35V (adjustable, must be > Vin) |
| Max Output Current | Depends on input/output ratio and inductor |
| Switching Frequency | Adjustable (external resistor) |
| Built-in Voltmeter | Yes (3-digit LED display) |
| Output Voltage Adjustment | Onboard potentiometer |
| Operating Temperature | -40°C to +85°C |
Why Choose This LTC1871 Boost Module?
- Wide 3–35V input range — works with single Li-ion cells (3.7V), 12V lead-acid, and 24V systems
- Built-in voltmeter — real-time output voltage display without external multimeter
- Adjustable output — onboard potentiometer for precise voltage setting
- LTC1871 controller — high-performance current-mode PWM for stable regulation under varying loads
- Compact module — ready to use, no additional components required
Compatible With / Common Use Cases
- DIY bench power supply: Boost 12V to adjustable 15–30V for op-amp and analog circuit testing
- Battery-powered boost regulator: Step up 3.7V Li-ion to 5V/9V/12V for portable devices
- LED driver: Boost low-voltage supply to drive high-voltage LED strings
- Solar MPPT pre-stage: Boost low-voltage solar panel output for battery charging
- Arduino / ESP32 projects: Boost 3.3V/5V to higher voltages for motor or sensor supply
Frequently Asked Questions
Q: Can the output voltage be lower than the input voltage?
A: No — this is a boost (step-up) converter only. The output must always be higher than the input. For step-down (buck) conversion, use a module based on LM2596, MP1584, or XL4016.
Q: What is the maximum output current of this module?
A: Maximum current depends on the input/output voltage ratio and the onboard inductor rating. As a general guide: at 12V input / 24V output, expect approximately 2–3A output. Always test at your specific voltage ratio and derate for thermal safety.
Q: How do I set the output voltage?
A: Turn the onboard potentiometer clockwise to increase output voltage, counterclockwise to decrease. Monitor the built-in voltmeter display for real-time feedback. Connect a load before fine-tuning for accurate regulation.
Package Contents
- 1× LTC1871 DC-DC Boost Converter Module (with built-in voltmeter)
