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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 1.2A 8DFN
- 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 ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x3)
- Grade：-
- Qualification：-
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Overview
The LT3663EDCB-3.3#TRMPBF 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 at up to 1.2A. The device features a programmable output current limit for accurate system power dissipation control. It utilizes a 8-pin DFN EP package.
Feature Summary
- Current mode buck topology with integrated synchronous rectification
- Programmable output current limit to manage thermal performance
- Wide input voltage capability suitable for automotive applications
Applications
- Automotive electronics systems
- Industrial point-of-load regulation
- General DC-DC conversion from higher bus voltages
Procurement Notes
Verify the specific suffix #TRMPBF indicates tape and reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the exact electrical specifications required for your design, particularly the fixed 3.3V output and 1.2A current rating.
Selection Notes
Select this component when a compact solution is needed for converting 7.5V to 36V inputs down to 3.3V. The integrated current limit simplifies thermal management compared to non-limited regulators. Consider the 8-pin DFN EP package for space-constrained PCB layouts requiring efficient heat dissipation through the exposed pad.
Part Context
This part belongs to the LT3663 family of high-efficiency buck converters. It shares architectural similarities with other members like the LT3663EDCB-5 but differs in fixed output voltage settings. The series is designed for applications requiring robust performance across wide input ranges.
FAQ
Is the LT3663EDCB-3.3#TRMPBF suitable for automotive environments?
Yes, the datasheet identifies it as an automotive-grade switcher capable of handling the specified input voltage range typical in automotive systems.
How is the output current limited managed?
The device features a programmable output current limit that accurately controls system power dissipation, allowing designers to reduce the size of power path components.
