LT1956IGN-5#PBF

Overview

The LT1956IGN-5#PBF is a high-voltage monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 5.5 V to 60 V and provides a fixed 5 V output. The device integrates a high-efficiency 1.5 A power switch, oscillator, and control logic within a single chip. It functions at a fixed switching frequency of 500 kHz and delivers up to 1.2 A of continuous output current. The component utilizes current mode architecture for stable loop performance and features low quiescent current of 25 uA. It is housed in a 16-pin SSOP package and supports operation temperatures from -40°C to +125°C.

Feature Summary

• Integrates a high-efficiency 1.5 A internal power switch with complete oscillator and control circuitry
• Utilizes current mode architecture to ensure fast transient response and robust loop stability
• Supports wide input voltage ranges up to 60 V for versatile high-voltage step-down applications
• Features low static current consumption to enhance efficiency during light-load or standby conditions

Applications

• Industrial systems requiring reliable high-voltage DC-DC conversion
• Automotive electronics utilizing 12V or 24V nominal bus architectures
• Distributed power supply networks in telecommunications infrastructure
• Battery-powered equipment needing efficient voltage regulation from higher source voltages

Procurement Notes

Verify the specific suffix #PBF confirms lead-free RoHS compliance before ordering. Confirm the SSOP-16 package dimensions match your PCB footprint requirements. Check official Analog Devices documentation for any recent product change notifications that may affect pinout or electrical characteristics. Ensure the 500 kHz switching frequency aligns with your electromagnetic interference constraints.

Selection Notes

Select this component when a fixed 5 V output is required from inputs exceeding 5.5 V. The integrated 1.5 A switch suits loads demanding up to 1.2 A continuous current. Consider the 500 kHz frequency for balancing component size against switching losses. Verify thermal management capabilities for the SSOP-16 package under maximum load conditions.

Part Context

This part belongs to the LT1956 series of high-voltage buck regulators. It shares architectural similarities with other members like the LT1956EFE-5 but differs in packaging and temperature ratings. The series is designed for applications requiring robust performance in noisy environments with wide input voltage variations.

Replacement Considerations

LT1956EGN-5#TRPBF offers identical electrical specifications in a tape-and-reel format suitable for automated assembly processes.