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Product Detailed Parameters
- Description：IC REG BUCK ADJ 6A 24LQFN
- Series：Silent Switcher®2
- Mfr：Analog Devices Inc.
- Package：Tray
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3.4V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.97V
- Voltage - Output (Max)：42V
- Current - Output：6A
- Frequency - Switching：180kHz ~ 2.1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：24-TFQFN Exposed Pad
- Supplier Device Package：24-LQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The LT8643SEV-2#PBF is a synchronous step-down Silent Switcher 2 regulator from Analog Devices, housed in a 24-lead LQFN package. It supports an input voltage range of 3.4 V to 42 V and delivers up to 6 A of output current with an adjustable output voltage. The device features a low quiescent current of 750 nA and operates at switching frequencies between 200 kHz and 3 MHz. It functions within a temperature range of -40°C to +125°C and includes external compensation capabilities.
Feature Summary
- Integrates Silent Switcher 2 architecture for minimized electromagnetic interference radiation without requiring external filters.
- Provides high-efficiency synchronous buck conversion with integrated power switches and control logic.
- Supports flexible design implementation through external compensation pin configuration.
Applications
- Automotive infotainment and instrument cluster power distribution
- Industrial distributed power supply architectures
- Point-of-load regulation for processors and FPGAs
Procurement Notes
Verify the specific suffix against official Analog Devices documentation to confirm package type and electrical characteristics. Ensure compatibility with your system's thermal management requirements given the LQFN-24 form factor. Confirm RoHS compliance status via the manufacturer datasheet before finalizing procurement specifications.
Selection Notes
Select this component when designing systems requiring wide input voltage ranges up to 42 V and high output currents near 6 A. The external compensation feature allows optimization for specific loop stability requirements. Consider the operating temperature range and thermal dissipation capabilities inherent to the LQFN-24 package for your application environment.
Part Context
This part belongs to the LT8643S family of Silent Switcher 2 regulators. It shares core architectural similarities with other members like the LT8643SIV-2#PBF but differs in package configuration. The series is designed for applications demanding low EMI and high efficiency in compact spaces.
Replacement Considerations
LT8643SIV-2#PBF is listed as a parameter-equivalent alternative by distributors. Verify package dimensions and pinout compatibility before substitution.
