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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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Overview
The XR77129ELBMTR-F is a positive output step-down DC-DC controller IC from MaxLinear, housed in a 44-TQFN (7x7) package. It supports I2C and SMBus interfaces for configuration. The device operates with a switching frequency range of 105kHz to 1.23MHz and features synchronous rectification. It is designed for operation within a junction temperature range of -40°C to 125°C.
Feature Summary
- Supports I2C and SMBus digital control interfaces
- Features synchronous rectification for improved efficiency
- Configurable switching frequency range
Applications
- Point-of-load power supplies
- Digital power management systems
- Embedded systems requiring programmable voltage regulation
Procurement Notes
Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and pin compatibility during integration. Review latest datasheet revisions for any parameter updates or handling instructions prior to design finalization.
Selection Notes
Select this controller for applications requiring digital interface control and high-frequency operation. Ensure the design accommodates the 44-TQFN footprint and thermal requirements. Verify that the target system voltage and current levels align with the controller's operational specifications.
Part Context
This component belongs to MaxLinear's series of DC-DC switching controllers. It is part of a family of devices designed for efficient power conversion in compact form factors. The specific model integrates control logic with synchronous rectification capabilities.
Replacement Considerations
The product is listed as obsolete. Consult official manufacturer documentation for confirmed alternative part numbers or recommended replacements before proceeding with procurement or design changes.
