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Product Detailed Parameters
- Description：IC REG BUCK ADJ 750MA 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.2V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：1.21V
- Voltage - Output (Max)：24V
- Current - Output：750mA
- Frequency - Switching：195kHz ~ 2.15MHz
- 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 LT3973EMSE#PBF is a monolithic buck switching regulator from Analog Devices Inc. It operates with an input voltage range of 5.6V to 42V and delivers a fixed output voltage of 5V at up to 0.75A. The device features an adjustable switching frequency and consumes only 2.5µA of quiescent current. It utilizes a DFN-10 package and supports industrial temperature ranges.
Feature Summary
- Integrates high-side and low-side switches for efficient step-down conversion
- Features ultra-low quiescent current for extended battery life in standby modes
- Supports adjustable switching frequency to optimize external component size
- Includes internal compensation and soft-start for simplified design
Applications
- Industrial control systems
- Automotive electronics
- Portable instrumentation
- Battery-powered equipment
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and tube packaging. Confirm the EMSE variant matches the required thermal performance and pinout for your PCB layout. Cross-reference the datasheet revision date to ensure compatibility with your design specifications before finalizing procurement orders.
Selection Notes
Select this component when a wide input voltage range up to 42V is required alongside low standby power consumption. The fixed 5V output simplifies design for standard logic supplies. Consider the DFN-10 package for space-constrained applications requiring efficient heat dissipation without additional external components.
Part Context
This part belongs to the LT3973 family of high-efficiency, low-noise buck regulators. It is designed for applications demanding high performance in small footprints. The EMSE designation specifies the plastic DFN-10 package type, distinguishing it from other package options within the same functional family.
Replacement Considerations
Direct replacements include other LT3973 variants with different output voltages or packages, such as LT3973IMSE#PBF. Ensure substitute parts maintain the same 5V output and 0.75A current rating. Verify thermal characteristics and pin compatibility if changing package types.
