The recommended layout for the TPS3707-25DGN involves placing the device close to the voltage rail, using short and wide traces for the input and output pins, and keeping the noise-sensitive pins (such as the threshold pin) away from the power traces. Additionally, a decoupling capacitor should be placed close to the device to filter out high-frequency noise.
The choice of resistor values for the threshold and hysteresis pins depends on the specific application requirements. The threshold pin sets the voltage at which the device triggers, and the hysteresis pin sets the amount of hysteresis around that threshold. TI provides a calculation tool and application notes to help designers choose the correct resistor values based on their specific requirements.
The maximum voltage that can be applied to the input pin of the TPS3707-25DGN is 28V. Exceeding this voltage can damage the device. It's essential to ensure that the input voltage is within the recommended operating range to ensure reliable operation.
The TPS3707-25DGN is designed to be used as a low-side voltage supervisor, meaning it monitors the voltage on the low side of the power rail. It's not suitable for high-side voltage supervision. If high-side voltage supervision is required, a different device such as the TPS3807 should be considered.
During power-up, the TPS3707-25DGN has a built-in delay to ensure that the output is held low until the input voltage reaches the threshold voltage. During power-down, the output is held low until the input voltage falls below the threshold voltage minus the hysteresis voltage. This ensures that the device provides a clean and glitch-free output signal.
TPS3707-25DGN datasheet
by Texas Instruments
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