LTC1728ES5-3.3#TRPBF - Precision Micropower Low Voltage Reset Monitor

The LTC1728ES5-3.3#TRPBF is a high-precision reset monitor circuit designed by Linear Technology, now part of Analog Devices, to ensure reliable operation of microprocessor (µP) systems. This compact and efficient device monitors the supply voltage of digital systems and provides a reset signal to the µP whenever the monitored voltage falls below a preset threshold, ensuring the system resets in a controlled manner during power-up, power-down, or brown-out conditions.

With its fixed threshold voltage of 3.3V, the LTC1728ES5-3.3#TRPBF is optimized for use with 3.3V-powered systems. It boasts a low supply current of only 10µA, which makes it ideal for battery-operated and portable applications where power conservation is paramount. Its precision voltage monitor protects systems with a guaranteed threshold accuracy of ±1.5% over the full operating temperature range of -40°C to 85°C.

One of the standout features of this device is its small footprint. Packaged in a space-saving SOT-23, it is particularly suitable for systems where board space is at a premium. The LTC1728ES5-3.3#TRPBF also offers a reset timeout period of 200ms, ensuring that the µP has ample time to initialize properly during power-up.

The device's robust design includes additional functionalities such as a manual reset input, allowing for a system reset to be triggered externally. This feature can be particularly useful during system debugging and testing. Moreover, the reset output is available in both active low (LTC1728) and active high (LTC1729) versions, providing design flexibility to accommodate different µP reset input configurations.

Overall, the LTC1728ES5-3.3#TRPBF is a reliable and essential component for any microprocessor system that requires precise monitoring of its power supply to prevent data corruption and ensure proper startup. Its low power consumption, high accuracy, and small size make it an excellent choice for a wide range of applications, including portable devices, embedded systems, and IoT devices.