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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 24QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4V ~ 30V
- Frequency - Switching：500kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Power Good
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The LT3742EUF#TRPBF is a dual-channel, step-down DC/DC switching regulator controller designed to drive high-side N-channel power MOSFETs. It operates with a fixed 500kHz current-mode architecture, enabling simple loop compensation and per-cycle current limiting. The device supports an input voltage range of 6V to 36V and delivers up to 25A output current across two phases. It features a QFN-20 package, operates between -40°C and +125°C, and includes shutdown functionality.
Feature Summary
- Dual-channel architecture for driving high-side N-channel power MOSFETs
- Fixed 500kHz current-mode control for simplified compensation
- Integrated per-cycle current limiting protection
- Shutdown pin for power management control
Applications
- High-power point-of-load regulation
- Server and workstation VRM designs
- Industrial equipment power distribution
- Telecommunications infrastructure power systems
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official Analog Devices documentation prior to procurement. Ensure the supplier provides valid traceability for the component batch. Check for any regional distribution restrictions or limited availability notices associated with this specific part number before finalizing orders.
Selection Notes
Select this controller for applications requiring dual-phase buck conversion with high current density. The fixed frequency simplifies EMI filtering compared to variable frequency alternatives. Ensure external MOSFETs support the required voltage and current ratings. Verify thermal management capabilities match the QFN-20 package constraints for the intended operating environment.
Part Context
This component belongs to the LT3741/LT3742 family of high-performance synchronous buck controllers from Analog Devices. It shares architectural similarities with the LT3741 but offers dual-channel capability. The EUF suffix denotes the QFN-20 package variant. The TRPBF suffix specifies the reel packaging format for automated assembly processes.
Replacement Considerations
LT3741IUF-1#TRPBF serves as a single-channel alternative within the same family. Cross-compatibility requires verifying phase count requirements and pinout alignment. Evaluate thermal performance differences between single and dual-channel implementations in the target application.
