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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.2A 8DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：7.5V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：6V
- Current - Output：1.2A
- Frequency - Switching：1.5MHz
- 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#TRPBF is a current mode step-down switching regulator from Analog Devices, housed in an 8-lead DFN package. It operates with an input voltage range of 7.5V to 36V and delivers a fixed 5V output at up to 1.2A. The device features a programmable output current limit that accurately controls system power dissipation. Designed for automotive applications, it supports a wide operating temperature range from -40°C to +125°C.
Feature Summary
- Current mode buck topology with integrated synchronous rectification
- Programmable output current limit for precise power management
- Automotive qualified component suitable for harsh environments
Applications
- Automotive battery charger systems
- High-voltage input DC-DC conversion
- Power path component reduction in embedded designs
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IDCB variant meets industrial or automotive temperature specifications required by your design. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.
Selection Notes
Select this regulator when a fixed 5V output is required from a high-voltage bus between 7.5V and 36V. The built-in current limit simplifies thermal management by reducing external component size. Ensure the application demands a single-output buck converter within the specified current rating. Consider the DFN package constraints for thermal performance in dense layouts.
Part Context
This component belongs to the LT3663 family of high-voltage step-down regulators. It shares architectural similarities with other parts in the series but differs in output voltage configuration and package type. The IDCB designation specifies the industrial/automotive grade version in a compact DFN footprint, distinguishing it from lower-grade or differently packaged variants.
Replacement Considerations
LT3663EDCB-5#TRPBF offers identical electrical performance in an extended temperature grade. LT3663IDCB-3.3#TRPBF provides a 3.3V output instead of 5V. Verify pin compatibility and thermal requirements when substituting these variants.
