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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 20TSSOP
- 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-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3741IFE#PBF is a high-power synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 6V to 36V and supports output voltages from 4V to 34V. The device regulates output current up to 20A with a fixed switching frequency between 200kHz and 1MHz. It features a 20-lead TSSOP-EP package, RoHS compliance, and an operating temperature range of -40°C to +125°C.
Feature Summary
- Synchronous buck topology for high-efficiency power conversion
- Accurate constant current regulation capability for LED applications
- Integrated soft-start and enable control functions
- Clock synchronization support for system noise management
Applications
- High-power LED lighting drivers
- Industrial power supply systems
- Distributed power architectures
- Automotive electronics modules
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches project requirements. Check current availability status as supply may be limited. Ensure storage conditions comply with moisture sensitivity levels. Validate datasheet revisions against design specifications before procurement.
Selection Notes
Select this controller for applications requiring precise current regulation in buck topologies. Consider the 20A current limit and 36V maximum input when designing power stages. Evaluate thermal performance due to the TSSOP-EP package characteristics. Compare against LT3741-1 variants if different pin configurations are needed. Ensure external components support the specified switching frequency range.
Part Context
This component belongs to the LT3741 family of high-power synchronous step-down controllers. It shares architectural similarities with other Linear Technology power management ICs designed for robust industrial and automotive environments. The series emphasizes efficiency and reliability in constant current and constant voltage modes.
Replacement Considerations
LT3741IFE-1#PBF offers alternative pinout configurations. LT3743IFE#PBF provides similar buck functionality with integrated LED driver features. Verify electrical parameters and package dimensions before substitution.
