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Product Detailed Parameters
- Description：IC REG BUCK 5V 750MA 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：4.2V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- 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-5#TRPBF is a monolithic buck switching regulator from Analog Devices, designed for high-efficiency step-down conversion. It operates with an input voltage range of 4.2V to 42V and delivers a fixed 5V output at up to 0.75A. The device features an adjustable switching frequency up to 2.15MHz, enabling the use of small external components. It consumes only 2.5µA of quiescent current in standby mode and includes integrated Schottky diodes. Packaged in a 10-lead MSOP, it supports shutdown control and is rated for industrial temperature ranges.
Feature Summary
- Integrates power switch and synchronous rectification diodes for compact design
- Adjustable switching frequency allows optimization for size or efficiency
- Ultra-low quiescent current minimizes power consumption in standby
- Shutdown pin enables precise power management control
Applications
- Automotive infotainment and sensor power supplies
- Industrial control system back-end regulation
- Portable equipment requiring wide input voltage tolerance
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the EMSE variant meets the required operating temperature range for your application environment. Ensure compatibility with the DC1730A evaluation kit if initial testing is planned. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.
Selection Notes
Select this component when a fixed 5V output is required from a wide input range up to 42V. The MSOP-10 package suits space-constrained designs. Consider the 2.15MHz maximum frequency for minimizing passive component size. Verify that the 0.75A output current meets load requirements. The integrated diode topology simplifies layout compared to asynchronous converters.
Part Context
This part belongs to the LT3973 family of high-voltage buck regulators. It shares core architecture with variants like LT3973IMSE-5 but differs in package and temperature rating. The EMSE designation specifies the MSOP-10 package form factor. It complements other PMIC solutions by offering a simple, single-inductor step-down solution without external MOSFETs.
Replacement Considerations
LT3973IMSE-5#PBF offers similar electrical performance in a tube-packaged MSOP-10 format. LT3973HDD-5#TRPBF provides equivalent functionality in a DFN-10 package. Verify thermal dissipation requirements when substituting between MSOP and DFN packages due to differing heat spread characteristics.
