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Product Detailed Parameters
- Description：IC REG BUCK ADJ 750MA 10MSOP
- 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)：4.2V
- 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 LT3973IMSE#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It accepts an input voltage range of 4.2V to 42V and delivers up to 750mA output current. The device features adjustable switching frequencies from 195kHz to 2.15MHz and consumes only 2.5µA of quiescent current. It operates within a junction temperature range of -40°C to 125°C and utilizes a 10-lead MSOP package with an exposed pad for thermal management.
Feature Summary
- Adjustable frequency operation allows optimization for efficiency or component size
- Ultra-low quiescent current supports extended battery life in portable applications
- Wide input voltage range accommodates various power supply architectures
Applications
- Industrial control systems requiring stable DC-DC conversion
- Automotive electronics operating under wide voltage fluctuations
- Portable instrumentation powered by single-cell lithium batteries
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the MSOP-10 package variant matches your PCB footprint requirements. Ensure compatibility with the intended switching frequency settings for your design constraints.
Selection Notes
Select this component when a wide input voltage range up to 42V is required alongside low standby power consumption. The adjustable frequency feature provides flexibility in external component selection. Consider the thermal performance of the exposed pad for high-current applications.
Part Context
This part belongs to the LT3973 family of synchronous buck regulators. It shares core architecture with variants like LT3973IDD and LT3973IMSE-5 but differs in package type and reel configuration. The IMSE designation specifically denotes the MSOP-10 package suitable for space-constrained designs.
Replacement Considerations
LT3973IMSE-5#PBF offers similar electrical characteristics in a tube package. LT3973HMSE-5 provides a lower maximum input voltage of 28V. Verify pinout compatibility and thermal requirements before substituting.
