TPS3803-01QDCKRQ1 - Texas Instruments Voltage Supervisor IC

The TPS3803-01QDCKRQ1 from Texas Instruments is a highly reliable, low-power voltage supervisor designed to monitor a single system supply voltage. This integrated circuit (IC) is particularly suited for automotive and industrial applications where maintaining the correct voltage is critical for system integrity. Its primary function is to assert a reset signal whenever the VDD supply voltage falls below a preset threshold, ensuring that the system microcontroller or processor resets in a controlled manner during power-up, power-down, or brown-out conditions.

Encased in a compact 5-pin SC-70 package, the TPS3803-01QDCKRQ1 is optimized for space-constrained applications. It features a fixed sense-threshold voltage of 2.93V, which is ideal for 3.3V systems, and it can support a wide supply voltage range from 1.1V to 5.5V. This versatility allows it to be used in a variety of circuits without the need for external components to set the voltage threshold.

The IC boasts a low quiescent current of only 9 µA (typical), making it an energy-efficient choice for battery-powered devices. Additionally, the TPS3803-01QDCKRQ1 offers a manual reset input, enabling a microcontroller or an external source to trigger a system reset. The reset output is active-low and is asserted for a minimum of 200 ms, providing ample time for the system to stabilize after a voltage dip or outage.

For automotive applications, the TPS3803-01QDCKRQ1 is AEC-Q100 qualified, ensuring that it meets the stringent requirements for automotive reliability. Its operational temperature range from -40°C to +125°C allows it to function in extreme environmental conditions, further emphasizing its robustness and suitability for harsh environments.

In summary, the TPS3803-01QDCKRQ1 is a highly reliable voltage supervisor IC that provides essential protection for electronic systems. With its low power consumption, fixed voltage threshold, and extended temperature range, it is an excellent choice for designers looking to enhance system stability and safety in automotive and industrial applications.