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Product Detailed Parameters
- Description：IC REG BUCK 5V 1.2A 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x3)
- Grade：-
- Qualification：-
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Overview
The LT3663IDCB-5#TRMPBF is a current mode step-down switching regulator from Analog Devices, housed in an 8-pin DFN package. It operates with an input voltage range of 7.5V to 36V and provides a fixed 5V output at up to 1.2A. The device features a programmable output current limit that accurately controls system power dissipation and reduces the size of power path components.
Feature Summary
- Current mode buck topology for efficient DC-DC conversion
- Programmable output current limit for precise power management
- Fixed 5V output configuration
Applications
- Typical application as a 5V step-down converter
- Battery charger applications requiring current limiting
- Systems needing controlled power dissipation
Procurement Notes
Verify the suffix #TRMPBF against official documentation to confirm reel packaging specifications. Ensure the operating temperature range and pinout match the design requirements. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status through the datasheet before integration.
Selection Notes
Select this component when a fixed 5V output is required from a 7.5V to 36V input source. The integrated current limit simplifies thermal management by controlling power dissipation. Consider the DFN-8 package for space-constrained designs. Verify that the 1.2A output current meets the load requirements without exceeding thermal limits.
Part Context
This part belongs to the LT3663 series of high voltage buck regulators. Similar variants include LT3663IDCB-3.3#TRMPBF for 3.3V outputs and LT3663EDCB-5#TRPBF for automotive grade applications. The series is designed for battery-powered systems and industrial applications requiring robust power management.
Replacement Considerations
LT3663IDCB-3.3#TRMPBF offers the same package and control features but provides a 3.3V output instead of 5V. LT3663EDCB-5#TRPBF is the automotive qualified version with the same electrical characteristics and 5V output. Verify temperature ranges and qualification standards when substituting.
