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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 20QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：6V ~ 36V
- Frequency - Switching：200kHz ~ 1MHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The LT3741EUF-1#PBF is a synchronous step-down DC/DC controller from Analog Devices Inc., housed in a 20-QFN (4x4) package. It operates with an input voltage range of 6V to 36V and supports output voltages from 4V to 34V. The device features a fixed switching frequency of 1 MHz and can regulate output currents up to 25A. It functions within a temperature range of -40°C to +125°C TJ, drawing a typical operating supply current of 1.8 mA.
Feature Summary
- Synchronous buck topology for high-efficiency power conversion
- Integrated constant current and constant voltage regulation modes
- Supports clock synchronization for multi-phase or parallel operation
Applications
- High-power point-of-load (POL) converters
- Industrial equipment power distribution
- Telecommunications infrastructure systems
Procurement Notes
Verify the specific suffix '#PBF' indicates lead-free RoHS compliance and tube packaging. Confirm the '1' designation aligns with the required constant current control specifications. Ensure the 20-QFN footprint matches the target PCB design constraints before finalizing procurement orders.
Selection Notes
Select this component when a fixed 1 MHz frequency is required for EMI management. Choose the QFN package for compact board space requirements. Verify that the external inductor and capacitor selection supports the 25A current capability while maintaining thermal performance within the specified junction temperature limits.
Part Context
This part belongs to the LT3741 family of high-performance synchronous buck controllers. It shares architectural similarities with the LT3741EUF but differs in specific control loop configurations associated with the '-1' variant. The family is designed for applications demanding precise current regulation alongside standard voltage stepping capabilities.
Replacement Considerations
The LT3741EUF#PBF serves as a functional substitute if constant current regulation is not required. Cross-reference pinouts and thermal pad dimensions to ensure mechanical compatibility during replacement.
