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Product Detailed Parameters
- Description：IC REG BUCK ADJ 6A 24LQFN
- 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)：3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.97V
- Voltage - Output (Max)：42V
- Current - Output：6A
- Frequency - Switching：200kHz ~ 3MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-TFQFN Exposed Pad
- Supplier Device Package：24-LQFN (4x4)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LT8643SIV-2#TRPBF is a synchronous step-down Silent Switcher with an input voltage range of 3.4V to 42V and a maximum output current of 6A. It features adjustable output voltage from 0.97V to 42V, operating at a switching frequency between 180kHz and 2.1MHz. The device utilizes a 24-TFQFN package with exposed pad for surface mount installation.
Feature Summary
- Integrates Silent Switcher technology to minimize electromagnetic interference emissions without requiring external ferrite beads or shielding.
- Supports external compensation networks to allow flexible loop stability optimization for various output capacitor configurations.
- Provides high efficiency across wide load ranges through integrated synchronous rectification and low on-resistance power switches.
Applications
- Industrial automation systems requiring isolated or non-isolated DC-DC conversion
- Automotive electronics operating within standard automotive voltage profiles
- Telecommunications infrastructure power distribution networks
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging distinct from tray variants. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Ensure the ordering part number matches the exact temperature grade and package variant required for the design.
Selection Notes
Select this component when a 6A buck regulator is needed with strict EMI constraints in a compact footprint. The external compensation feature allows adaptation to different output capacitance values. Verify that the 42V input rating aligns with the system's maximum supply voltage including transients.
Part Context
This part belongs to the LT8643S family of Silent Switcher regulators. It shares core topology with other variants but differs in packaging and thermal characteristics. The IV suffix typically denotes a specific temperature range and package style within the broader product line.
Replacement Considerations
LT8643SEV-2#PBF and LT8643SHV-2#PBF are listed as parameter equivalent alternatives. Verify pinout compatibility and thermal performance differences before substitution.
