UCD3138RMHT

Overview

The UCD3138RMHT is a highly integrated digital power controller from Texas Instruments, part of the UCD3138 family. It operates within an input voltage range of 3 V to 3.6 V and draws 105 mA of input current. The device supports a maximum output current of 4 mA and functions reliably across a temperature range of -40°C to +125°C. Packaged in a WQFN-40 format for surface mount installation, it is supplied in reel, cut tape, or MouseReel configurations.

Feature Summary

• Fully programmable digital power management architecture based on a 32-bit ARM7TDMI-S core
• Integrated Fusion Digital Power Peripherals (FDPP) featuring dedicated error ADCs and PID-based hardware compensators
• Supports dual memory image execution for firmware updates without interrupting power delivery
• Includes multiple communication interfaces such as I2C, SPI, PMBus, and UART

Applications

• Isolated DC/DC converter modules
• Power factor correction (PFC) circuits
• AC/DC rectifiers for IT and network infrastructure
• High-efficiency synchronous rectification systems

Procurement Notes

Verify component authenticity through authorized channels due to the NRND status indicating it is not recommended for new designs. Confirm package integrity upon receipt, as the unit is moisture-sensitive and requires proper handling. Ensure compatibility with existing firmware requirements before procurement, as legacy support may vary.

Selection Notes

Select this component for applications requiring flexible digital control loops and advanced firmware update capabilities. It is suitable for designs needing high integration to reduce external component count. Consider the NRND status when planning long-term production runs and evaluate alternative future-proof solutions if available.

Part Context

This device belongs to the UCD3138 series of digital power controllers designed for high-performance power conversion. It integrates analog and digital peripherals to simplify design while offering extensive configurability. The series targets demanding applications in telecommunications and computing where efficiency and control precision are critical.

Replacement Considerations

Public confirmed substitute part numbers only; omit otherwise.