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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：-
- Output Configuration：-
- Topology：-
- Output Type：-
- Number of Outputs：-
- Voltage - Input (Min)：-
- Voltage - Input (Max)：-
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：-
- Frequency - Switching：-
- Synchronous Rectifier：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LT3663IDCB-3.3#TRPBF is a current mode step-down switching regulator from Analog Devices, designed for automotive applications. It operates with an input voltage range of 7.5V to 36V and provides a fixed output voltage of 3.3V at a maximum output current of 1.2A. The device utilizes a buck topology and features a programmable output current limit. This functionality accurately controls system power dissipation and allows for the reduction of power path component sizes. The component is housed in an 8-pin DFN EP package.
Feature Summary
- Current mode step-down switching regulator architecture
- Programmable output current limit for precise power control
- Automotive qualified reliability standard compliance
Applications
- 3.3V Step-Down Converter circuits
- Automotive power management systems
- Battery charger applications requiring current limiting
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the automotive grade designation matches project requirements. Ensure the fixed 3.3V output aligns with target load specifications. Cross-reference the 8-pin DFN EP package dimensions against PCB layout constraints. Validate supplier documentation against official Analog Devices datasheets for authenticity.
Selection Notes
Select this component when a fixed 3.3V output is required from a high-voltage input source between 7.5V and 36V. The integrated programmable current limit makes it suitable for protecting downstream loads without external sensing resistors. Consider the thermal performance of the exposed pad DFN package for heat dissipation needs. Verify that the 1.2A continuous current capability meets the peak and average load demands of the application.
Part Context
This part belongs to the LT3663 family of high voltage buck regulators. Variants such as LT3663IDCB-5 and LT3663IDCB-2.5 offer different fixed output voltages while sharing the same core architecture and current capabilities. The IDCB suffix denotes the industrial temperature range and specific package type. The #TRPBF suffix specifies the reel packaging format for automated assembly.
Replacement Considerations
LT3663IDCB-5#TRPBF offers identical electrical characteristics except for a fixed 5V output. LT3663IDCB-2.5#TRPBF provides a 2.5V fixed output. For adjustable output requirements, consider the LTC3633 series which supports adjustable voltage settings but differs in pin count and package size.
