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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 28TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：2.5V ~ 60V
- Frequency - Switching：50kHz ~ 1MHz
- Duty Cycle (Max)：99%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Power Good, Soft Start, Tracking
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3840IFE#TRPBF is a high-voltage synchronous step-down switching regulator controller from Analog Devices Inc. It operates with an input voltage range of 2.5V to 60V and supports a maximum output current of 20A. The device features a fixed switching frequency of 1MHz and utilizes a TSSOP-EP-28 package. Designed for efficiency, it offers a low quiescent current of 6µA and supports Burst Mode operation for improved light-load performance.
Feature Summary
- Supports wide input voltage range from 2.5V to 60V
- Capable of delivering up to 20A output current
- Features low quiescent current for enhanced efficiency
- Includes accurate current limit protection
Applications
- Industrial power supplies
- Telecommunications equipment
- Point-of-load regulation
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when sourcing. Confirm that the component is a controller requiring external MOSFETs for implementation. Ensure compatibility with the intended switching frequency and thermal requirements for the application environment.
Selection Notes
Select this controller for applications requiring high input voltages up to 60V. Consider the 1MHz switching frequency for balancing size and efficiency. Evaluate the need for Burst Mode operation if light-load efficiency is critical. Ensure the design accommodates the TSSOP-28 package thermal dissipation needs.
Part Context
This part belongs to the LT3840 series of synchronous buck controllers. It is designed to work with external N-channel MOSFETs to create efficient DC/DC converters. The series is known for handling high input voltages while maintaining precise regulation and protection features.
Replacement Considerations
Direct replacements include other parts within the LT3840 family such as LT3840IFE#PBF or LT3840MPFE#PBF, provided pinout and electrical specifications match the system requirements.
