LT8643SHV-2#TRPBF

Overview

The LT8643SHV-2#TRPBF is a synchronous step-down Silent Switcher®2 regulator from 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 adjustable output voltage starting at 0.97 V, a switchable frequency between 200 kHz and 3 MHz, and low quiescent current of 2.5 µA. Packaged in a 24-lead LQFN (4x4 mm) with exposed pad, it supports external compensation and shutdown functionality across a -40°C to +125°C junction temperature range.

Feature Summary

• Integrates Silent Switcher 2 architecture for minimized electromagnetic interference radiation without requiring external filters
• Supports wide input voltage range suitable for industrial and automotive power distribution systems
• Features adjustable switching frequency allowing optimization for efficiency or component size
• Includes external compensation capability for tailored loop stability in diverse application environments

Applications

• Industrial automation controllers and PLC power supplies
• Automotive infotainment and sensor node power regulation
• Distributed power architectures in telecom infrastructure
• Point-of-load conversion for FPGA and processor cores

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration distinct from tray variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling protocols are followed during storage and assembly due to moisture sensitivity classification. Cross-reference ordering part numbers with current Analog Devices catalogs to avoid obsolete or discontinued revisions.

Selection Notes

Select this component when high efficiency and low EMI are critical in space-constrained designs. The wide input range accommodates various bus voltages common in industrial sectors. External compensation allows customization for transient response requirements. Evaluate thermal performance based on PCB copper area and airflow conditions given the 6 A continuous current capability.

Part Context

This part belongs to the LT8643S family of Silent Switcher regulators designed for high-density power conversion. It shares architectural similarities with other members like LT8640S but offers higher current capacity. The SHV variant typically denotes extended voltage rating capabilities within the series lineup.

Replacement Considerations

LT8643SIV-2#PBF serves as a pin-compatible alternative with different packaging. LT8643SEV-2#PBF is another verified equivalent option within the same product family offering similar electrical characteristics.