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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.5A 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：5.5V
- Voltage - Input (Max)：60V
- Voltage - Output (Min/Fixed)：1.219V
- Voltage - Output (Max)：54V
- Current - Output：1.5A (Switch)
- Frequency - Switching：500kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-TSSOP-EP
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Overview
The LT1956IFE#TRPBF is a high-voltage, synchronous step-down switching regulator manufactured by Analog Devices Inc. It integrates a 1.5A power switch and operates at a fixed 500kHz switching frequency. The device supports an input voltage range from 5.5V to 60V and delivers up to 1.2A of output current. It features adjustable output voltage, internal soft-start, and thermal shutdown protection. Packaged in a 16-lead SSOP, it is designed for industrial applications requiring efficient power conversion from higher voltage rails.
Feature Summary
- Integrates a high-voltage 1.5A synchronous power switch for efficient buck conversion
- Operates at a fixed 500kHz switching frequency to optimize external component size
- Includes internal soft-start functionality to limit inrush current during startup
- Features thermal shutdown protection to safeguard the device under overload conditions
Applications
- Industrial point-of-load regulation
- Battery-powered equipment with wide input ranges
- Distributed power systems
- Telecommunications infrastructure
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging and RoHS compliance. Confirm the IFE package variant matches your PCB footprint requirements. Check current availability status as supply may be limited or subject to allocation. Ensure the operating temperature range meets your system's environmental specifications before finalizing procurement.
Selection Notes
Select this component when a wide input voltage range up to 60V is required alongside moderate output current capabilities. The fixed 500kHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the SSOP-16 package constraints for thermal management and board space. Verify that the adjustable output voltage setting aligns with the target load requirements using the specified feedback resistor network.
Part Context
The LT1956 belongs to Analog Devices' family of high-voltage synchronous buck regulators. It is designed to replace older non-synchronous solutions, offering improved efficiency through synchronous rectification. The part number LT1956IFE#TRPBF specifically denotes the industrial temperature grade, SSOP-16 package, and reel packaging format within the broader LT1956 product line.
Replacement Considerations
LT1956EGN-5#TR is a pin-compatible alternative in an SSOP-16 package. LT1956IGN-5#TRPBF offers the same function in an MSOP-16 package. Verify pinout compatibility and thermal performance differences when substituting between package types.
