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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 20TSSOP
- 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-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3741IFE-1#TRPBF is a fixed frequency synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 6V to 36V and supports switching frequencies from 200kHz to 1MHz. The device regulates output current up to 20A with a maximum output voltage of 34V. Packaged in a 20-TSSOP-EP surface mount format, it functions across a temperature range of -40°C to +125°C TJ.
Feature Summary
- Synchronous buck topology for high efficiency
- Integrated constant current regulation capability
- Clock synchronization support for multi-phase systems
- Built-in soft start and enable control features
Applications
- High power LED driver circuits
- Battery charging systems
- Industrial point-of-load regulation
- Telecommunications power supplies
Procurement Notes
Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm the I grade designation matches required thermal performance specifications. Ensure the 20-TSSOP-EP footprint aligns with existing PCB layout constraints. Cross-reference the datasheet revision to confirm pinout compatibility with previous design iterations.
Selection Notes
Select this component for applications requiring precise current regulation alongside voltage control. The synchronous design reduces external component count compared to non-synchronous alternatives. Consider the 20-TSSOP package for moderate power density requirements. Evaluate thermal dissipation needs based on the expected load current and ambient operating conditions.
Part Context
This part belongs to the LT3741 family of high-power step-down controllers. It shares core architecture with variants like LT3741EUF and LT3741IFE but differs in packaging and specific electrical tolerances. The -1 suffix typically denotes specific feature configurations or trim settings defined by the manufacturer's product line structure.
Replacement Considerations
LT3741IFE#TRPBF serves as a tube-packaged alternative with identical electrical characteristics. LT3741EUF-1#TRPBF offers the same functionality in a QFN package variant. Verify pin-to-pin compatibility before substituting different package types.
