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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 ~ 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-3.3#PBF is a current mode step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 7.5V to 36V and provides a fixed output voltage of 3.3V. The device delivers a maximum output current of 1.2A with a typical switch current rating of 2A. It features a fixed switching frequency of 1100kHz and includes programmable output current limiting. The component is housed in an 8-pin MSOP EP package and supports an extended operating temperature range from -40°C to 125°C.
Feature Summary
- Integrates a current mode control architecture for precise regulation
- Features programmable output current limit to manage system power dissipation
- Includes internal high-side and synchronous low-side power switches
- Designed to reduce the size of external power path components
Applications
- Automotive electronics systems requiring wide input voltage tolerance
- Industrial equipment utilizing distributed power architectures
- Embedded systems needing efficient step-down conversion from higher bus voltages
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging when reviewing distributor listings. Confirm the -3.3 designation matches the required fixed output voltage. Ensure the EMS8E package code aligns with PCB footprint requirements. Check RoHS compliance status against project specifications. Validate the automotive grade classification if operating in harsh environments.
Selection Notes
Select this component when a fixed 3.3V output is required from a 7.5V to 36V source. Choose based on the need for integrated synchronous rectification to improve efficiency. Consider the 1.2A continuous current capability for moderate load applications. Evaluate the 1100kHz switching frequency for trade-offs between component size and EMI. Verify thermal performance within the specified -40°C to 125°C junction temperature range.
Part Context
This part belongs to the LT3663 family of high voltage, high efficiency synchronous step-down converters. The series is designed for applications requiring robust performance across wide input voltage ranges. The LT3663 integrates power switches to minimize external component count. It targets industrial and automotive markets demanding reliable DC-DC conversion solutions.
Replacement Considerations
LT3663EMS8E-3.3#TRPBF serves as the tape and reel alternative to the tube-packed #PBF variant. Both share identical electrical characteristics and pinouts. Select the TRPBF version for automated surface mount assembly processes.
