KA75330 voltage supervisor that asserts a reset signal when supply voltage falls below the 3.3 V threshold. Useful for preventing microcontroller lockups or data corruption when running from a discharging battery.
Monitored supply/input voltage. Adafruit product page states the KA75330 monitors the voltage on one Input pin and starts running at voltages as low as 0.8V.
Reset/enable output. Adafruit product page states when Input goes below 3.3V it pulls the Output pin low; connect Output to a board Enable pin to disable low-voltage operation.
Ground reference for the KA75330 voltage detector circuit.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| Input | power | Monitored supply/input voltage. Adafruit product page states the KA75330 monitors the voltage on one Input pin and starts running at voltages as low as 0.8V. | Monitors 3.3V threshold; starts running as low as 0.8V per Adafruit product page. | |
| Output | signal | Reset/enable output. Adafruit product page states when Input goes below 3.3V it pulls the Output pin low; connect Output to a board Enable pin to disable low-voltage operation. | Pulls low when monitored voltage drops below 3.3V per Adafruit product page. | |
| GND | ground | Ground reference for the KA75330 voltage detector circuit. | 0V reference |
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