UCD90124ARGCR

The Texas Instruments UCD90124ARGCR is an advanced 12-rail sequencer and system health monitor designed for robust power management applications. This device features the capability to monitor and sequence up to 12 voltage rails, with all rails sampled every 400 microseconds. It incorporates a 12-bit Analog-to-Digital Converter (ADC) with a precise 2.5-V internal voltage reference, ensuring accurate measurements.

Key functionalities include sequencing based on time, rail, and pin dependencies, along with four programmable undervoltage and overvoltage thresholds per monitor. Nonvolatile error and peak-value logging are available for up to 12 fault detail entries. The UCD90124ARGCR also supports closed-loop margining for 10 rails, allowing margin outputs to adjust rail voltages to user-defined thresholds. Additional features include a programmable watchdog timer, system reset capabilities, flexible digital I/O configuration, and pin-selected rail states.

For synchronization, the device offers a multiphase PWM clock generator with frequencies ranging from 15.259 kHz to 125 MHz, capable of configuring independent clock outputs for switch-mode power supplies. Communication interfaces include JTAG and I2C/SMBus/PMBus. The UCD90124ARGCR also integrates fan control and monitoring system functions, supporting up to four fans with five user-defined speed-vs-temperature setpoints. It is supplied in a 64-VQFN (9x9 mm) package, suitable for surface mounting.