Boardoza TC7660S Negative Doubler Breakout Board
The Boardoza TC7660S Negative Doubler Breakout Board is a compact voltage conversion solution based on the TC7660S charge pump IC. It is designed to generate a stable negative voltage (-VOUT) and a doubled negative voltage (-2VOUT) from a positive input supply without requiring inductors. Using a switched-capacitor voltage converter architecture, this board efficiently inverts and doubles the input voltage, making it ideal for low-current precision analog applications. It is especially well-suited for powering operational amplifiers, sensor signal conditioning circuits, and instrumentation systems where a clean and stable negative supply is required. With a typical output capability of up to 10 mA, it is optimized for reference and low-power analog designs rather than high-current loads.
Key Features
- Negative Voltage Generation: Converts a single positive supply into stable negative voltage outputs.
- Dual Output Capability: Provides both -VOUT and -2VOUT options for flexible circuit design.
- High Efficiency Charge Pump: Achieves very high efficiency under light load conditions.
- Low Power Consumption: Optimized for precision, low-current applications.
- Precision Focused Design: Ideal for clean and stable reference voltage generation.
Technical Specifications
- Model
- TC7660S-NegativeDoubler
- Manufacturer
- Boardoza
- Manufacturer IC
- Microchip Technology Inc.
- Functions
- Negative voltage regulator
- Input Voltage
- 1.5 V – 12 V
- Voltage Input Type
- 2.50 mm pin header
- Output Current
- 10 mA
- Conversion Type
- Switched-capacitor charge pump
- Oscillator Frequency
- Between 10 kHz to 45 kHz
- Efficiency
- Up to 98–99% (typical, light load)
- Operating Temperature
- -40 °C to +80 °C
- Board Dimensions
- 40 mm × 20 mm
Board Pinout
( J1 ) Power Input Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VIN | Positive input voltage (1.5V – 12V) |
| 2 | GND | Ground |
( J2 ) Output Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | -2VOUT | Negative output, twice the input voltage |
| 2 | GND | Ground |
| 3 | -VOUT | Negative output, equal to input voltage |
Datasheet
Download (PDF)Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.