UCD9090RGZR

The UCD9090RGZR from Texas Instruments is an active 10-channel power supply sequencer and system health monitor. This device is designed to monitor and sequence multiple voltage rails, offering flexibility for complex power management systems.

Key electrical specifications include a 12-bit ADC for monitoring up to 10 voltage inputs, with all rails sampled every 400 microseconds. It supports sequencing based on time, rail, and pin dependencies. The device features four programmable undervoltage and overvoltage thresholds per monitor, along with nonvolatile error and peak-value logging for up to 30 fault detail entries. Closed-loop margining is available for 10 rails, allowing margin outputs to adjust rail voltages to user-defined thresholds.

Additional features include a programmable watchdog timer, flexible digital I/O configuration, and pin-selected rail states. The UCD9090RGZR also incorporates a multi-phase PWM clock generator with frequencies ranging from 15.259 kHz to 125 MHz, capable of configuring independent clock outputs for synchronizing switch-mode power supplies. Communication interfaces include JTAG, I2C, SMBus, and PMBus.

Packaged in a 48-VQFN (7x7 mm) with an exposed pad, the UCD9090RGZR is designed for surface mounting. It operates within a temperature range of -40°C to 125°C.