XRP7704ILBTR-F

Overview

The XRP7704ILBTR-F is a quad-output digital PWM step-down DC-DC controller manufactured by MaxLinear. It integrates four switching buck controllers with internal FET drivers, eliminating the need for external voltage rails. The device features an input voltage range of 6.5V to 20V and programmable output voltages from 0.9V to 5.1V. It includes up to six reconfigurable GPIO pins and is fully programmable via an I²C interface. Each channel utilizes independent Digital Pulse Width Modulation (DPWM) with five-coefficient PID control. The unit also incorporates a built-in LDO configurable to 3.3V or 5V, non-volatile memory for system configuration, and comprehensive protection features including over-temperature, under-voltage lockout, and per-channel over-current/voltage protection.

Feature Summary

• Integrates four independent switching buck controllers with internal FET drivers and DPWM technology
• Fully programmable via I²C interface with non-volatile memory for system configuration
• Includes a built-in LDO and up to six reconfigurable GPIO pins for flexible power management
• Provides complete power monitoring, reporting, and multi-channel protection mechanisms

Applications

• Complex embedded systems requiring multiple regulated power rails
• Telecommunications infrastructure equipment
• Industrial control systems with diverse voltage requirements
• Consumer electronics utilizing digital power management architectures

Procurement Notes

This component is officially designated as obsolete by the manufacturer. Availability is restricted to limited stock or surplus channels only. Verify part authenticity and condition carefully when sourcing from third-party distributors. Ensure that any replacement strategy accounts for the discontinuation status and potential supply chain constraints associated with end-of-life products.

Selection Notes

Select this component for designs requiring high integration of multiple buck regulators within a single package. It is suitable for applications where digital control via I²C is preferred over analog compensation networks. Consider the TQFN-40 package constraints and thermal dissipation requirements. Evaluate the need for the integrated LDO and GPIOs against discrete alternatives to optimize board space and component count.

Part Context

The XRP7704 series represents MaxLinear's approach to digital power management, replacing traditional analog PWM controllers with software-configurable solutions. This specific model belongs to the XRP7704 family, designed to simplify power rail design through digital programming. It shares architectural similarities with other members of the series but offers distinct pin counts and feature sets tailored for specific integration densities.

Replacement Considerations

As an obsolete part, direct substitutes are not guaranteed. Review the XRP7704ILB-F variant for potential packaging differences. Consult MaxLinear documentation for updated recommendations or cross-reference with newer digital PMIC families offering similar channel counts and I²C interfaces.