TPS3809L30QDBVRQ1

The Texas Instruments TPS3809L30QDBVRQ1 is a supervisory circuit designed for circuit initialization and timing supervision, primarily for DSPs and processor-based systems. This device features a fixed sense-threshold voltage of 2.64V and provides a power-on reset generator with a minimum delay time of 120ms.

The TPS3809L30QDBVRQ1 is housed in a compact SOT-23-3 package, suitable for surface mount applications. It operates within an ambient temperature range of -40°C to 125°C. The reset output is active-low and push-pull, ensuring reliable system reset.

This supervisor IC is qualified for automotive applications and meets AEC-Q100 standards. It requires no external components for its reset function, simplifying circuit design and reducing component count. The device monitors a single voltage channel and is pin-for-pin compatible with the MAX 809.

Key electrical characteristics include a typical supply current of 9 µA and a precision-supply voltage monitor. The reset is asserted when the supply voltage rises above the threshold and remains active as long as the voltage is below the threshold. An internal timer delays the output's return to the inactive state after the supply voltage has risen above the threshold.