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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2.5A 16MSOP
- 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)：4.3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：1.197V
- Voltage - Output (Max)：40.74V
- Current - Output：2.5A
- Frequency - Switching：200kHz ~ 2.25MHz
- 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 LT3975EMSE#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It accepts an input voltage range from 4.3V to 42V and delivers up to 2.5A of load current. The device features a low quiescent current of 2.7µA during regulation with no load. It operates at an adjustable frequency up to 2MHz and utilizes Burst Mode operation for high efficiency at light loads while maintaining output ripple below 15mV. The component includes current limit foldback protection and maintains a low dropout voltage of 500mV when the input voltage drops below the programmed output.
Feature Summary
- Integrates adjustable frequency control up to 2MHz for optimized design flexibility
- Maintains ultra-low static current consumption in no-load conditions
- Provides efficient low-ripple operation under light load scenarios
- Includes built-in short circuit protection via current limit foldback
Applications
- Automotive cold crank power supply systems
- Industrial DC-DC conversion requiring wide input ranges
- Battery-powered equipment needing extended standby life
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging configuration. Confirm the EMSE designation corresponds to the MSOP-10 package type. Ensure compatibility with the intended thermal management requirements for the selected operating environment. Cross-reference the manufacturer datasheet for exact ordering codes and availability status before finalizing procurement plans.
Selection Notes
Select this component when a wide input voltage range up to 42V is required alongside moderate output current capabilities. Consider the adjustable switching frequency feature for EMI optimization or size reduction needs. Evaluate the low quiescent current specification for applications prioritizing energy efficiency during idle states. Verify that the MSOP-10 package fits within the available PCB footprint constraints.
Part Context
This part belongs to the LT3975 family of synchronous step-down regulators designed for high-efficiency power conversion. It shares architectural similarities with other members like the LT3973 but offers higher current capacity. The series targets applications demanding robust performance across varying input conditions while minimizing power loss.
Replacement Considerations
Direct substitutes include the LT3975EMS#PBF for tube packaging variants. Other family members such as the LT3973 offer similar functionality with lower current ratings.
