XR77129ELBTR-F

Description：IC REG CTRLR BUCK SMBUS 44TQFN
Series：-
Mfr：MaxLinear, Inc.
Package：Tape & Reel (TR)

SKU:5cd99f24cca6 Category: DC DC Switching Controllers Brand: MaxLinear, Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK SMBUS 44TQFN
Series：-
Mfr：MaxLinear, Inc.
Package：Tape & Reel (TR)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：4
Output Phases：1
Voltage - Supply (Vcc/Vdd)：6V ~ 40V
Frequency - Switching：105kHz ~ 1.23MHz
Duty Cycle (Max)：-
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：I2C, SMBus
Control Features：Enable
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：44-WFQFN Exposed Pad
Supplier Device Package：44-TQFN (7x7)
Grade：-
Qualification：-

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XR77129ELBTR-F

Overview

The XR77129ELBTR-F is a positive output step-down DC-DC controller IC manufactured by MaxLinear, Inc. It operates via I2C and SMBus interfaces and is housed in a 44-TQFN (7x7) package. This component functions as a buck regulator controller designed for synchronous step-down applications.

Feature Summary

Supports digital control via I2C and SMBus communication protocols
Designed for synchronous step-down voltage regulation

Applications

Digital power management systems requiring bus-controlled buck regulation

Procurement Notes

Verify the obsolete status of this part number with the manufacturer before procurement planning. Confirm availability of alternative packages or direct replacements if current stock is exhausted. Ensure interface compatibility with existing I2C/SMBus controllers during integration assessment.

Selection Notes

Select this component for designs requiring precise digital control of buck converters through standard serial interfaces. The 44-TQFN package offers a compact footprint suitable for space-constrained PCB layouts. Verify thermal performance requirements for the specific application environment.

Part Context

This part belongs to the MaxLinear series of DC-DC switching controllers. It is specifically categorized as a buck regulator controller within the power management integrated circuit portfolio, distinct from complete PMIC solutions that include integrated MOSFETs.