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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 ~ 150°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 LT3973HMSE#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with 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 utilizes a 10-lead MSOP package with exposed pad, supporting operation temperatures from -40°C to +150°C.
Feature Summary
- Adjustable frequency operation allows optimization for efficiency or component size
- Ultra-low quiescent current enhances battery life in portable applications
- Wide input voltage range supports diverse power supply architectures
- Integrated shutdown pin enables system power management
Applications
- Automotive electronics systems
- Industrial control equipment
- Portable instrumentation devices
- Battery-powered consumer electronics
Procurement Notes
Verify the specific suffix matches the required package type and temperature grade. Confirm availability status as some variants may have restricted supply. Ensure the ordering part number aligns with the exact electrical specifications needed for the design. Check for RoHS compliance documentation if required by regulatory standards.
Selection Notes
Select this component when wide input voltage tolerance and low standby current are critical. The adjustable frequency feature permits trade-offs between external component count and conversion efficiency. Consider thermal performance requirements given the high maximum junction temperature rating and surface mount packaging constraints.
Part Context
This part belongs to the LT3973 family of step-down regulators designed for high-efficiency power conversion. It shares architectural similarities with other members like LT3973EMSE and LT3973HMSE-5 but differs in specific package options and factory-set parameters. The HMSE variant specifically denotes the MSOP-10 package configuration.
Replacement Considerations
LT3973EMSE#PBF offers similar functionality in an MSOP-10 package with potentially different thermal characteristics. LT3973IDD#PBF provides equivalent regulation in a WDFN-10 package for space-constrained designs. Verify pin compatibility and thermal resistance values before substitution.
