LT8643SIV-2#PBF

Overview

The LT8643SIV-2#PBF is a synchronous step-down Silent Switcher with 2.5 A quiescent current and external compensation. It features a 42 V input voltage range, 6 A output current, and adjustable output voltage starting from 0.97 V. The device operates at switching frequencies between 200 kHz and 3 MHz, with a maximum operating temperature of 125 C.

Feature Summary

• Silent Switcher 2 architecture for low EMI radiation
• External compensation capability for flexible loop design
• High efficiency synchronous buck topology

Applications

• Automotive infotainment systems
• Industrial power distribution
• Point-of-load regulation

Procurement Notes

Verify component authenticity through authorized Analog Devices channels. Confirm package integrity and pin alignment prior to assembly. Check datasheet revisions for specific electrical characteristics. Ensure storage conditions meet moisture sensitivity level requirements. Validate supplier documentation against official part markings.

Selection Notes

Select this variant when external compensation is required for specific control loop dynamics. Verify input voltage does not exceed 42 V limits. Ensure thermal management supports 6 A continuous output. Compare against LT8643SEV-2#PBF if internal compensation suffices. Confirm LQFN-24 footprint compatibility.

Part Context

Part of the LT8643S family utilizing Silent Switcher 2 technology. Designed for high-density power applications requiring low electromagnetic interference. Manufactured by Analog Devices Inc. in a surface-mount LQFN-24 package. Supports wide input voltage ranges suitable for automotive environments.

Replacement Considerations

• LT8643SEV-2#PBF
• LT8643SHV-2#PBF

FAQ

What is the minimum output voltage?

The minimum adjustable output voltage is 0.97 V.

Does this part support external compensation?

Yes, the LT8643SIV-2#PBF includes provisions for external compensation networks.