UCD9081RHBTG4

The Texas Instruments UCD9081RHBTG4 is an 8-channel power supply sequencer and monitor designed for systems requiring precise control over multiple voltage rails. This device features a nominal supply current of 3 mA and operates over an industrial temperature range of -40°C to 85°C.

Key electrical specifications include the ability to monitor eight voltage rails with a resolution of 3.2 mV and a configurable reset timeout of 2µs minimum. The device supports adjustable or selectable voltage configurations and provides an active low reset signal. It is supplied in a 32-VQFN (5x5) package, suitable for surface mount applications.

The UCD9081RHBTG4 offers flexible rail sequencing based on timeline, parent rail regulation window, or parent rail threshold achievement. It includes independent under- and overvoltage thresholds per rail and configurable regulation expiration times. Alarm conditions are logged with timestamps, and the device has on-chip flash for storing user data and error logging for system failure analysis. Configuration and monitoring are facilitated via an I2C interface and a Microsoft Windows GUI.

This component is ideal for applications in telecommunications, servers, networking equipment, test equipment, and industrial systems that require the sequencing of multiple voltage rails. Its robust monitoring and logging capabilities make it suitable for ensuring system stability and diagnosing failures.