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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 1.2A 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：7.5V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：1.2A
- Frequency - Switching：1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：8-MSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3663HMS8E-3.3#TRPBF is a current mode step-down switching regulator manufactured by Analog Devices Inc. It features a fixed 3.3V output with a maximum output current of 1.2A. The device operates within an input voltage range of 7.5V to 36V and utilizes a buck topology. Key electrical parameters include a switching frequency of 1100kHz, a typical switch current of 2A, and an operating temperature range from -40°C to 125°C. It is housed in an 8-pin MSOP EP package and is designated for automotive applications.
Feature Summary
- Current mode step-down switching regulator architecture
- Programmable output current limit for system power dissipation control
- Automotive qualified component designation
Applications
- Automotive power supply systems
- Step-down conversion from 7.5V to 36V input rails
- Fixed 3.3V output generation for load circuits
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the automotive grade status and RoHS compliance through official manufacturer documentation or authorized distributor datasheets. Ensure the part number matches the exact fixed 3.3V output variant to avoid functional mismatches with adjustable or other voltage versions.
Selection Notes
Select this component when a fixed 3.3V output is required from a 7.5V to 36V input source in automotive environments. The 1.2A output current capability suits moderate load applications. Consider the 1100kHz switching frequency for balancing efficiency and external component size. The MSOP EP package offers thermal performance benefits for compact designs.
Part Context
This part belongs to the LT3663 family of high-efficiency synchronous buck converters. The family includes variants with different output voltages and packages. The LT3663 series is designed for applications requiring precise current limiting and robust performance in demanding environments, such as automotive electronics.
Replacement Considerations
Cross-reference with LT3663EMS8E-3.3#TRPBF for identical electrical specifications but tube packaging. Verify compatibility with other LT3663 variants if voltage or package differences are acceptable.
