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Product Detailed Parameters
- Description：IC REG BUCK SEPIC ADJ 4.5A DDPAK
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Supplier Device Package：DDPAK-7
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Overview
The LT1374HVIR#TRPBF is a monolithic Buck switching regulator from Analog Devices, designed for high-efficiency step-down conversion. It features an integrated 4.5A switch and operates at a fixed 500kHz switching frequency. The device supports an input voltage range of 5V to 32V and provides an adjustable output voltage. It includes a shutdown feature with low quiescent current of 20µA in standby mode. The component is housed in a 16-TSSOP package with an exposed pad (EP) for thermal management and is rated for operation between -40°C and +125°C junction temperature.
Feature Summary
- Integrates a high-current 4.5A power switch for efficient step-down regulation
- Supports wide input voltage ranges up to 32V for flexible power supply designs
- Features low standby current consumption via a dedicated shutdown pin
- Utilizes a thermally enhanced TSSOP package for improved heat dissipation
Applications
- Industrial point-of-load regulation
- Distributed power systems
- Battery-powered equipment requiring high efficiency
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the HV variant rating matches your maximum input voltage requirements. Check current availability status as distribution may be limited. Ensure the 16-TSSOP-EP footprint aligns with your PCB layout constraints. Validate RoHS compliance documentation for your region's regulatory standards.
Selection Notes
Select this part when a high-current buck converter is needed with a wide input range. The 500kHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Consider the thermal performance of the TSSOP-EP package for your power dissipation needs. Compare against standard LT1374 variants if lower input voltage ratings are sufficient for your application.
Part Context
This component belongs to the LT1374 family of switching regulators. It shares core architecture with other LT1374 models but differs in input voltage handling and packaging options. The HV designation typically denotes higher voltage tolerance capabilities within the series.
Replacement Considerations
LT1374HVIFE#PBF offers similar electrical characteristics in a tube-packaged TSSOP-EP format. LT1374CR#PBF provides comparable functionality in a DDPAK-7 package with a slightly lower maximum input voltage rating.
