TPS3801K33DCK Voltage Detector from Texas Instruments

The TPS3801K33DCK is a high-accuracy, low-power voltage detector designed and manufactured by Texas Instruments (TI). This device is part of TI's extensive family of supervisory circuits that provide microprocessor monitoring, power-on reset control, and battery-life optimization. It is specifically engineered to monitor a single system supply voltage and assert a reset signal whenever this voltage drops below a predetermined threshold.

The TPS3801K33DCK operates over a wide voltage range, making it suitable for a variety of applications, including portable electronics, industrial control systems, and automotive electronics. Its fixed-sense threshold voltage is set at 3.3V, which is a common voltage level for digital circuits, ensuring compatibility with a broad range of microcontrollers and digital ICs.

This device comes in a compact, 5-pin SC-70 package, which is ideal for space-constrained applications. Despite its small size, the TPS3801K33DCK does not compromise on performance, offering a low quiescent current of typically 9 µA, which is beneficial for battery-powered devices where power conservation is critical.

Key features of the TPS3801K33DCK include a high threshold accuracy of ±2%, which ensures reliable operation even under varying conditions, and a built-in hysteresis to prevent false triggering due to noise or transient voltage fluctuations. Additionally, the device boasts a fast response time, providing swift system protection in the event of a voltage drop.

For ease of integration, the TPS3801K33DCK includes an open-drain output that can be connected to a variety of logic levels, and it is fully specified over the extended temperature range of –40°C to +85°C. The device's robust design also ensures that it is resistant to electrostatic discharge (ESD) events.

In summary, the TPS3801K33DCK from Texas Instruments is a reliable and efficient solution for voltage monitoring and system reset functions. Its precision, low power consumption, and compact footprint make it an excellent choice for designers looking to enhance system reliability without sacrificing performance or space.