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Product Detailed Parameters
- Description：IC REG BUCK 5V 1.2A 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：4.3V
- Voltage - Input (Max)：38V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Current - Output：1.2A
- Frequency - Switching：200kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：10-MSOP-EP
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Overview
The LT3971EMSE-5#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3V to 38V and provides a fixed output voltage of 5V at a maximum output current of 1.2A. The device features a switchable switching frequency up to 2MHz and maintains a low quiescent current of 2.8µA during regulation. It utilizes a 10-lead MSOP package with an exposed thermal pad, supporting operation temperatures from -40°C to +125°C.
Feature Summary
- Integrates a high-efficiency internal power switch and boost Schottky diode for compact design
- Features Burst Mode operation to maintain high efficiency at light loads while minimizing output ripple
- Includes accurate reference voltage and specified pin currents optimized for USB applications
Applications
- USB-powered portable equipment requiring efficient step-down conversion
- Battery-operated systems needing extended runtime through low quiescent current
- Industrial control modules operating within wide input voltage ranges
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the MSOP-10 package dimensions match your PCB footprint requirements. Ensure the fixed 5V output aligns with system load specifications. Check for any recent PCN updates regarding material or manufacturing site changes.
Selection Notes
Select this component when a fixed 5V output is required without external feedback resistors. It is suitable for designs prioritizing low standby power consumption in battery-driven applications. Consider the 2MHz frequency option if smaller passive components are desired compared to lower frequency alternatives.
Part Context
This part belongs to the LT3971 family of high-voltage step-down regulators. It shares architectural similarities with the LT3971A series but offers specific electrical characteristics tailored for standard industrial and consumer electronics. The EMSE designation identifies the industrial temperature grade and MSOP packaging variant.
Replacement Considerations
LT3971IMSE-5#PBF serves as a direct functional substitute within the same package and specification profile. Verify that the replacement matches the exact output voltage and current ratings for seamless integration.
