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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.
| Front Side | Back Side |
|---|---|
Model: TC7660S-NegativeDoubler
Manufacturer: Boardoza
Manufacturer IC: Microchip Technology Inc.
Negative voltage regulator
1.5 V – 12 V
2.50 mm pin header
10 mA
Switched-capacitor charge pump
Between 10 kHz to 45 kHz
Up to 98–99% (typical, light load)
-40 °C to +80 °C
40 mm × 20 mm
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VIN | Positive input voltage (1.5V – 12V) |
| 2 | GND | Ground |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | -2VOUT | Negative output, twice the input voltage |
| 2 | GND | Ground |
| 3 | -VOUT | Negative output, equal to input voltage |
All hardware design files are licensed under Creative Commons Attribution-ShareAlike 4.0 International License.
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