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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 LT3973EMSE#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It accepts an input voltage range from 4.2V to 42V and delivers up to 750mA of output current. The device features an adjustable switching frequency ranging from 195kHz to 2.15MHz, allowing for optimization of external component size or noise performance. It operates with a quiescent current of 2.5µA and supports output voltages from 1.21V to 24V. The component is housed in a 10-lead MSOP package and is rated for operation between -40°C and 125°C.
Feature Summary
- Adjustable switching frequency allows trade-off between efficiency and component size
- Ultra-low quiescent current minimizes power consumption in standby modes
- Wide input voltage range accommodates various supply sources
- Integrated synchronous rectification improves conversion efficiency
Applications
- Industrial control systems requiring wide input tolerance
- Automotive electronics operating on 12V or 24V networks
- Point-of-load regulation for embedded processors
- Battery-powered equipment needing extended runtime
Procurement Notes
Verify the specific suffix matches the required tape-and-reel packaging configuration. Confirm the thermal pad requirements for the MSOP package during PCB layout. Ensure the selected switching frequency aligns with electromagnetic interference constraints. Validate that the input voltage does not exceed the absolute maximum rating under all transient conditions.
Selection Notes
Select this regulator when a wide input voltage range is necessary alongside low standby power consumption. The adjustable frequency feature is critical for applications where inductor size must be minimized or switching noise must be shifted away from sensitive bands. Ensure the load current remains within the 750mA limit to maintain thermal stability.
Part Context
This component belongs to the LT3973 family of high-efficiency step-down converters. It is designed for applications demanding high performance in compact spaces. The EMSE variant specifically denotes the MSOP package option, distinguishing it from other physical form factors within the same electrical specification set.
Replacement Considerations
LT3973HDD#TRPBF offers similar electrical characteristics in a DFN package. LT3973IDD#PBF provides the same functionality in a WDFN package. Verify pin compatibility and thermal dissipation capabilities before substituting.
