LT1676IS8#TRPBF

Overview

The LT1676IS8#TRPBF is a high-efficiency synchronous buck switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 7.4V to 60V and provides an adjustable output voltage from 1.24V to 51V. The device delivers a switch current of 550mA at a fixed switching frequency of 100kHz. It features a low quiescent current of 30µA and supports operation over a junction temperature range of -40°C to 125°C. Packaged in an 8-SOIC (3.90mm wide) surface-mount package, it includes internal protection against overcurrent and thermal overload.

Feature Summary

• Integrated synchronous rectification for improved efficiency without external Schottky diodes
• Wide input voltage capability suitable for automotive and telecom bus applications
• Fixed 100kHz switching frequency allows for compact passive component selection
• Built-in thermal and current limiting protects the device under fault conditions

Applications

• Automotive DC/DC conversion systems
• Telecommunications 48V step-down power supplies
• IEEE1394 compliant step-down converters
• Industrial point-of-load regulation

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the 8-SOIC footprint matches your PCB layout constraints. Cross-reference the full part number with Analog Devices to confirm current production status and availability regions.

Selection Notes

Select this component for designs requiring a wide input voltage range up to 60V with moderate output current needs. The fixed 100kHz frequency simplifies filter design compared to higher-frequency alternatives. Consider the 8-SOIC package size for space-constrained layouts. Evaluate thermal performance based on the expected load current and ambient temperature conditions within the specified operating range.

Part Context

This part belongs to the LT1676 family of high-efficiency buck regulators. It shares functional similarities with other members like the LT1676CS8 but differs in packaging and temperature grade specifications. The IS8 variant specifically denotes the industrial temperature range and SOIC-8 package configuration offered in reel format for automated assembly processes.

Replacement Considerations

LT1676CS8#PBF is a related variant offering tube packaging instead of tape-and-reel.