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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.2A 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.3V
- Voltage - Input (Max)：38V
- Voltage - Output (Min/Fixed)：1.19V
- Voltage - Output (Max)：30V
- Current - Output：1.2A
- Frequency - Switching：200kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：16-MSOP-EP
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Overview
The LT3971EMSE16#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3V to 38V and delivers up to 1.2A of output current. The device features an adjustable switching frequency from 200kHz to 2MHz and maintains a low quiescent current of 2.8µA. It provides an adjustable output voltage between 1.19V and 30V within a -40°C to +125°C operating temperature range. The component utilizes a 16-lead MSOP package with an exposed pad for thermal management.
Feature Summary
- Integrates a high-voltage switch capable of handling input voltages up to 38V
- Features adjustable switching frequency to optimize efficiency and external component size
- Includes internal soft-start to limit inrush current during startup
- Provides cycle-by-cycle current limiting and thermal shutdown protection
Applications
- Industrial control systems requiring wide input voltage ranges
- Distributed power architectures in telecommunications equipment
- Battery-powered devices needing efficient step-down conversion
- Embedded systems with strict space constraints
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the EMSE16 designation corresponds to the correct 16-lead MSOP package variant. Ensure compatibility with the intended PCB footprint and thermal design requirements before finalizing procurement orders.
Selection Notes
Select this regulator for applications requiring a balance of high input voltage tolerance and moderate output current. The adjustable frequency feature allows designers to trade off between efficiency and passive component size. Consider the thermal performance of the MSOP package for high-load scenarios.
Part Context
This component belongs to the LT3971 family of high-voltage buck regulators. It shares functional similarities with other parts in the series but differs in package type and pin configuration. The LT3971 series is designed for applications demanding robust performance across wide input voltage ranges.
Replacement Considerations
Direct substitutes include LT3971IMSE16#PBF for tube packaging or LT3971EMSE#TRPBF if the 16-lead variant is not strictly required. Verify pinout compatibility and electrical specifications before replacing.
