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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 20QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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#TRPBF is a synchronous buck DC-DC controller IC manufactured by Analog Devices Inc. It operates within an input voltage range of 6V to 36V and supports output voltages from 0V to 34V. The device features a programmable switching frequency adjustable between 200kHz and 1MHz. It utilizes a 20-WFQFN exposed pad package with dimensions of 4x4mm. The controller includes integrated soft-start, enable, and frequency control features, supporting up to 25A output current capability in appropriate configurations.
Feature Summary
- Synchronous rectification architecture for high efficiency
- Integrated clock synchronization capability
- Programmable switching frequency control
- Built-in soft-start and enable functions
Applications
- High power constant current LED drivers
- Constant voltage battery chargers
- Industrial point-of-load regulation
- Telecommunications power systems
Procurement Notes
Verify the specific suffix '-1' indicates the variant optimized for constant current applications when sourcing. Confirm the 'TRPBF' designation ensures tape-and-reel packaging compatible with automated assembly processes. Ensure the component meets RoHS compliance standards required for your manufacturing environment. Cross-reference the datasheet revision date against your design timeline to account for any potential updates in electrical characteristics or recommended operating conditions.
Selection Notes
Select this component when designing high-power step-down converters requiring precise current regulation alongside voltage control. The wide input voltage range accommodates various bus architectures. Consider thermal management requirements due to the QFN package's exposed pad design. Evaluate the need for external synchronization if multiple converters operate in close proximity to prevent sub-harmonic oscillation or noise interference.
Part Context
This part belongs to the LT3741 family of high-performance buck regulators designed for demanding applications. It complements other variants like the LT3741IFE-1#PBF which offers different packaging options such as TSSOP. The series is characterized by its ability to handle high currents while maintaining tight regulation, making it suitable for industrial and telecom sectors where reliability is critical.
Replacement Considerations
Direct substitutes include the LT3741EUF#TRPBF for standard voltage regulation needs without the specific constant current optimization. For different packaging requirements, consider the LT3741IFE-1#PBF in TSSOP format. Verify pin compatibility and thermal performance before swapping packages.
FAQ
What is the maximum output voltage supported by this controller?
The LT3741EUF-1#TRPBF supports output voltages ranging from 0V to 34V.
Does this component support external clock synchronization?
Yes, the device includes a clock sync feature allowing synchronization to an external reference signal.
