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Product Detailed Parameters
- Description：IC REG BUCK SEPIC ADJ 4.5A 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：5V
- Voltage - Input (Max)：32V
- Voltage - Output (Min/Fixed)：2.42V
- Voltage - Output (Max)：27.52V
- Current - Output：4.5A (Switch)
- Frequency - Switching：500kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
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Overview
The LT1374HVIS8#TRPBF is a monolithic Buck switching regulator from Analog Devices, featuring an integrated 4.5A power switch and a fixed 500kHz switching frequency. It operates within a 5V to 32V input voltage range and provides an adjustable output voltage between 2.42V and 27.52V. The device supports up to 3.6A continuous output current and includes shutdown functionality with a low quiescent current of 2.5mA and standby current of 20µA. Designed for surface-mount applications, it utilizes an 8-SOIC package and functions reliably across an extended temperature range of -40°C to +125°C.
Feature Summary
- Integrates a high-current 4.5A internal power switch for efficient step-down conversion.
- Supports both Buck and SEPIC topologies for versatile input-to-output voltage configurations.
- Features cycle-by-cycle current limiting to protect the internal switch during overload conditions.
- Includes a dedicated shutdown pin that reduces supply current to ultra-low levels when inactive.
Applications
- Battery-powered portable equipment requiring efficient DC-DC conversion
- Industrial control systems operating with wide input voltage ranges
- Embedded systems utilizing microprocessors or FPGAs needing regulated power rails
Procurement Notes
Verify the specific suffix #TRPBF confirms tape-and-reel packaging distinct from tube variants. Confirm the VIS8 designation aligns with the required SOIC-8 package dimensions and thermal characteristics. Ensure the component meets RoHS compliance standards for your assembly process. Cross-reference the manufacturer's latest datasheet for any updates regarding lead-free soldering profiles and moisture sensitivity levels prior to procurement.
Selection Notes
Select this component when a compact solution is needed for converting higher voltages down to lower regulated levels. The fixed 500kHz frequency allows for smaller external inductors compared to lower-frequency regulators. Consider the thermal performance of the SOIC-8 package against the expected load current. Verify that the input voltage never exceeds the maximum rating of 32V under all transient conditions.
Part Context
This part belongs to the LT1374 family of high-efficiency step-down switching regulators. The series is characterized by its ability to deliver significant current from a small footprint. Variants within the family differ primarily in packaging options, such as TSSOP or DPAK, and specific output configurations. The LT1374HVIS8#TRPBF represents the high-voltage capable version in a standard surface-mount format.
Replacement Considerations
LT1374HVIS8#PBF serves as a parameter-equivalent alternative differing only in packaging format (tube versus tape-and-reel). Both parts share identical electrical specifications and pinouts. Ensure that inventory sources distinguish between these packaging styles to maintain consistency in automated assembly processes.
