LT1573CS8#TRPBF

Overview

The LT1573CS8#TRPBF is a Low Dropout PNP Regulator Driver manufactured by Analog Devices Inc. It operates with a single supply voltage ranging from 2.8V to 10V and features a precision internal reference of 1.265V for adjustable output configurations. The device provides a drive current capability up to 440mA typical, enabling control of external PNP pass transistors for high-current applications up to 5A. It includes latching overcurrent protection and thermal shutdown to minimize heat sink requirements. The component is housed in an 8-lead SOIC surface mount package.

Feature Summary

• Integrates latching overcurrent protection that minimizes the required size of external heat sinks during fault conditions.
• Delivers fast transient response characteristics, allowing for reduced bulk output capacitance in microprocessor power supply designs.
• Provides precise output voltage regulation through an internal 1.265V reference with 1% accuracy.
• Supports single-supply operation within a wide input voltage range of 2.8V to 10V.

Applications

• Microprocessor power supply circuits requiring high current and low dropout performance
• High-current low dropout regulator systems utilizing external PNP pass transistors
• Battery backup regulators requiring smart battery management capabilities

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm the manufacturer is Analog Devices Inc. or its authorized successor. Ensure the part number matches the exact pinout and electrical specifications defined in the official datasheet before integration into production designs.

Selection Notes

Select this driver when designing linear regulators that require high current handling and rapid transient response. It is suitable for applications needing precise voltage regulation with minimal external component count. Consider the thermal resistance characteristics and the need for external PNP transistors with sufficient gain-bandwidth product for optimal stability.

Part Context

This component belongs to the LT1573 series of low dropout regulator drivers. It is designed to work in conjunction with discrete PNP power transistors to create complete regulated power supplies. The series offers various fixed voltage options and adjustable versions to accommodate different system voltage requirements.

Replacement Considerations

Consult factory documentation for military grade variants or alternative packages within the LT1573 family. Verify compatibility with existing PCB footprints and thermal management strategies when substituting similar regulator drivers from other manufacturers.