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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 1.2A 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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#PBF is a current mode step-down switching regulator manufactured by Analog Devices Inc. It features a fixed 3.3V output voltage and supports up to 1.2A of output current. The device operates with an input voltage range from 7.5V to 36V. It utilizes an 8-pin MSOP EP package and includes programmable output current limiting to control system power dissipation.
Feature Summary
- Current mode buck topology for efficient DC-to-DC conversion
- Programmable output current limit to manage thermal performance
- Integrated soft-start functionality to reduce inrush current
Applications
- Industrial power supply systems
- Automotive electronics applications
- Distributed power architectures
Procurement Notes
Verify the specific suffix indicates the fixed 3.3V output variant. Confirm the MSOP EP package type matches the design footprint requirements. Ensure the extended temperature grade aligns with the operational environment specifications before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3V output is required within a 7.5V to 36V input range. The integrated current limit simplifies thermal management compared to standard regulators. Consider the 8-pin MSOP EP package size constraints during PCB layout planning.
Part Context
This part belongs to the LT3663 family of synchronous step-down converters. It shares core architecture with other variants differing primarily in output voltage settings and package options. The series is designed for high-efficiency power conversion in space-constrained applications.
Replacement Considerations
Direct substitutes include other LT3663 variants with different fixed output voltages, such as LT3663HMS8E-5#PBF or LT3663HMS8E-1.2#PBF, provided the system voltage requirements are adjusted accordingly.
