UCD90240ZRBT

Supervisors Overview

The UCD90240ZRBT is a 24-rail PMBus addressable power sequencer and system manager manufactured by Texas Instruments. It integrates two 12-bit ADC engines for precise monitoring and features 24 dedicated enable pins to control power rail on/off states. The device operates within a supply voltage range of 2.97V (min) to 3.63V (max) and functions at temperatures between -40°C and +85°C. Packaged in a compact 9-mm × 9-mm Microstar Junior BGA with 157 pins, it includes programmable reset delay times and utilizes LGPO pins for additional control capabilities.

Supervisors Feature Summary

• Integrates two 12-bit ADC engines for high-precision system monitoring
• Provides 24 dedicated enable pins for independent power rail control
• Supports PMBus communication for addressable sequencing management
• Features programmable reset delay times for flexible timing configurations

Supervisors Applications

• Complex multi-rail power sequencing in server systems
• Power management in industrial control equipment
• System supervision in telecommunications infrastructure

Supervisors Procurement Notes

Verify component status carefully as the UCD90240ZRBT is listed as obsolete by Texas Instruments. New designs should consider alternate products. Confirm package integrity and pin compatibility during sourcing. Ensure documentation matches the specific ZRBT suffix requirements for your application constraints.

Supervisors Selection Notes

Select this component only if legacy compatibility or specific 24-rail sequencing requirements are mandatory. Evaluate the 157-pin BGA footprint against available PCB space. Consider the operational temperature range and supply voltage limits relative to system design. Assess the availability of replacement alternatives due to obsolescence status before finalizing the bill of materials.

Supervisors Part Context

This part belongs to the UCD90 series of power sequencers from Texas Instruments. It is designed for applications requiring extensive rail control and monitoring. The ZRBT suffix indicates a specific tape-and-reel packaging variant. It serves as a system manager coordinating complex power-up and power-down sequences across multiple voltage domains.

Supervisors Replacement Considerations

Texas Instruments explicitly recommends considering an alternate product for new designs due to the obsolete status of the UCD90240ZRBT. No specific public substitute part numbers are provided in the source data. Engineers must evaluate newer generation sequencers that offer similar rail counts and PMBus interfaces.