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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：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：-
- Qualification：-
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Overview
The LT8640SEV#PBF is a synchronous step-down DC/DC converter from the Silent Switcher 2 family, manufactured by Analog Devices Inc. It operates with an input voltage range of 3.4 V to 42 V and delivers up to 6 A of output current. The adjustable output voltage spans from 970 mV to 41.58 V. Key electrical parameters include a quiescent current of 2.5 uA and a programmable switching frequency between 200 kHz and 3 MHz. The device supports shutdown functionality and functions within a junction temperature range of -40°C to +125°C. It is housed in a 24-lead LQFN package.
Feature Summary
- Integrates Silent Switcher 2 technology to minimize electromagnetic interference (EMI) radiation without requiring external filters.
- Features synchronous buck topology for high efficiency across wide load and line conditions.
- Includes internal compensation and soft-start capabilities to simplify design implementation.
Applications
- Industrial automation power supplies
- Distributed power systems
- Point-of-load regulation
Procurement Notes
Verify the specific suffix against official datasheets to confirm pinout and thermal pad configurations. Confirm RoHS compliance status through manufacturer documentation. Check for moisture sensitivity levels prior to soldering. Ensure availability aligns with project timelines as supply may be restricted.
Selection Notes
Select this component when high input voltage tolerance up to 42 V is required alongside significant current delivery. Consider the LQFN package for space-constrained designs needing robust thermal performance. Evaluate the need for EMI reduction features inherent to the Silent Switcher architecture.
Part Context
This part belongs to the LT8640S series of synchronous buck regulators. It shares architectural similarities with other Silent Switcher devices but is distinct in its 6 A current rating and 42 V input capability compared to lower-current or lower-voltage variants in the broader portfolio.
Replacement Considerations
LT8640SEV-2#PBF is listed as a parameter equivalent in distributor records. Verify functional equivalence via official datasheets before substitution.
