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Product Detailed Parameters
- Description：IC REG BUCK 5V 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)：5V
- Voltage - Output (Max)：-
- Current - Output：1.2A
- Frequency - Switching：1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°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 LT3663EMS8E-5#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 7V to 36V and provides a fixed output voltage of 5V. The device supports a maximum output current of 1.2A with a typical switch current rating of 2A. It features a fixed switching frequency of 1MHz and includes programmable output current limiting for system power dissipation control. The component is housed in an 8-lead MSOP package with an exposed pad, designed for surface mount installation.
Feature Summary
- Integrates a high-side N-channel MOSFET switch for efficient synchronous rectification
- Features programmable output current limit to accurately control system power dissipation
- Includes internal soft-start capability to manage inrush current during startup
Applications
- Industrial point-of-load regulation
- Automotive electronics power distribution
- Embedded systems requiring isolated auxiliary supplies
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging when sourcing. Confirm the -5 designation corresponds to the fixed 5V output variant. Ensure the MSOP-8 package footprint matches the target PCB layout. Check manufacturer documentation for RoHS compliance status prior to final procurement approval.
Selection Notes
Select this component for applications requiring a compact solution with integrated power switches. The fixed 1MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the 2A peak switch current capability for handling transient loads beyond the continuous 1.2A rating. Evaluate thermal performance requirements given the small package size.
Part Context
This part belongs to the LT3663 family of current-mode buck regulators. Variants within the series offer different fixed output voltages, such as 3.3V or adjustable configurations. The EMS8E package code specifies the 8-lead MSOP form factor with an exposed thermal pad for improved heat dissipation.
Replacement Considerations
Direct pin-to-pin replacements include other LT3663 variants with different output voltages if the voltage requirement changes. Cross-reference with LTC3631 for higher voltage input applications, though output current capabilities differ significantly.
