XRP7704ILBTR-1003-F

Overview

The XRP7704ILBTR-1003-F is a quad-output digital PWM buck controller manufactured by MaxLinear. It features four independent step-down DC-DC channels with internal FET drivers, supporting an input voltage range of 6.5V to 20V and programmable output voltages from 0.9V to 5.1V. The device integrates a built-in LDO configurable to 3.3V or 5V, up to six reconfigurable GPIOs, and non-volatile memory for system configuration. Control is achieved via an I2C interface, allowing for fully programmable DPWM frequencies between 300 kHz and 1.5 MHz. It includes comprehensive protection features such as over-temperature, under-voltage lockout, per-channel over-current, and over-voltage protection.

Feature Summary

• Four independent switching buck controllers with integrated FET drivers and digital pulse width modulation
• Fully programmable control via I2C interface with five-coefficient PID control for each channel
• Integrated built-in low dropout regulator (LDO) and non-volatile memory for persistent configuration storage
• Comprehensive protection mechanisms including per-channel over-current, over-voltage, and over-temperature safeguards

Applications

• Multi-rail power distribution in telecommunications infrastructure equipment
• Power management systems for industrial automation controllers
• Embedded computing platforms requiring independent voltage regulation
• Network switches and routers utilizing G.hn or similar communication standards

Procurement Notes

This component is designated as End-of-Life (EOL) by the manufacturer. Production has been discontinued, and availability is restricted to remaining stock or third-party distributors. Procurement requires verification of part authenticity due to potential obsolescence risks. Users should confirm the specific suffix (-1003-F) matches their design requirements, as it denotes the tape-and-reel packaging variant. Early planning for replacement components is recommended to mitigate supply chain disruptions.

Selection Notes

Select this IC when a compact solution for multiple regulated outputs is required without external compensation circuits. The digital control architecture eliminates the need for analog feedback network tuning, simplifying design iterations. Ensure the application demands an input voltage within the 6.5V to 20V range. The I2C interface must be supported by the host microcontroller. Consider the thermal performance of the 40-TQFN package relative to the total power dissipation of all four channels under maximum load conditions.

Part Context

The XRP7704 series represents a family of high-integration power management ICs designed for complex embedded systems. This specific model, XRP7704ILBTR-1003-F, belongs to the professional PMIC category, offering a complete power solution in a single package. It distinguishes itself from standard linear regulators by providing efficient step-down conversion for multiple rails simultaneously. The integration of digital control and non-volatile memory reduces the bill of materials and board space compared to discrete solutions.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the End-of-Life status, engineers must evaluate alternative quad-output controllers or multi-channel solutions from other manufacturers that match the pinout, electrical specifications, and thermal requirements.