LT8640SAAV#PBF

$11.49

Description：42V, 6A SYNCHRONOUS STEP-DOWN SI
Series：-
Mfr：Analog Devices Inc.
Package：Tray

SKU:b32ca4976075 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：42V, 6A SYNCHRONOUS STEP-DOWN SI
Series：-
Mfr：Analog Devices Inc.
Package：Tray
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)：41.5V
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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LT8640SAAV#PBF

Overview

The LT8640SAAV#PBF is a synchronous step-down switching regulator 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 device features a programmable switching frequency between 200 kHz and 3 MHz. It utilizes a QFN-24 package for surface mount installation. Key electrical specifications include a quiescent current of 1.7 uA and a shutdown supply current of 750 nA. The component supports operation across a temperature range of -40°C to +125°C.

Feature Summary

Integrates Silent Switcher 2 technology to minimize electromagnetic interference without requiring external ferrite beads.
Provides high-efficiency synchronous buck conversion with adjustable output voltage capability.
Features low static current consumption for improved battery life in portable applications.

Applications

Industrial automation systems requiring isolated or non-isolated power rails
Telecommunications infrastructure equipment
Automotive electronics and infotainment systems

Procurement Notes

Verify the exact suffix #PBF confirms lead-free compliance and RoHS standards. Confirm the AA variant specifically denotes the QFN-24 package type distinct from other LT8640S footprints. Ensure the source document explicitly lists this part number as active rather than obsolete or restricted. Cross-reference the manufacturer's official datasheet for any recent lifecycle changes or recommended alternative designs.

Selection Notes

Select this component when a wide input voltage range up to 42 V is required alongside high current delivery. The Silent Switcher 2 architecture is suitable for noise-sensitive environments where EMI reduction is critical. Compare against standard buck converters if strict electromagnetic compatibility standards must be met without additional filtering components. Consider the thermal performance of the QFN-24 package for your specific PCB layout constraints.

Part Context

This part belongs to the LT8640S series of Silent Switcher 2 regulators. It shares core topology with variants like LT8640SEV#PBF but differs in package configuration. The series targets high-performance DC/DC conversion needs in compact form factors. Other members may offer different pinouts or thermal characteristics while maintaining similar electrical performance profiles.