LT1573CS8#PBF

Voltage Regulators - Linear Regulator Controllers Overview

The LT1573CS8#PBF 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 is housed in an 8-lead SOIC surface mount package. The device features a precision internal reference voltage of 1.265V, enabling adjustable output voltages or fixed configurations. It supports high drive currents up to 250mA to control external PNP pass transistors, facilitating output currents up to 5A. Key electrical characteristics include a quiescent current of 1.7mA, a shutdown threshold of 1.33V, and a latch-off threshold of 1.4V. The component is rated for operation within a temperature range of 0°C to 125°C.

Voltage Regulators - Linear Regulator Controllers Feature Summary

• Integrates latching overcurrent protection to minimize heat sink requirements
• Provides fast transient response capabilities requiring minimal bulk capacitance
• Features single supply operation compatible with low input voltage ranges
• Includes precision output voltage regulation with internal reference stability

Voltage Regulators - Linear Regulator Controllers Applications

• Microprocessor power supply circuits
• High current low dropout regulator designs
• Systems requiring rapid load transient handling

Voltage Regulators - Linear Regulator Controllers Procurement Notes

Verify the specific suffix and marking code against the official datasheet to confirm the exact variant and manufacturing lot. Ensure the ordering information matches the required thermal grade and package style for your PCB layout. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status and compliance certifications such as RoHS before finalizing procurement orders.

Voltage Regulators - Linear Regulator Controllers Selection Notes

Select this component when designing regulators that require precise control of external PNP transistors for high current applications. Consider the drive pin saturation voltage and latch timing requirements when sizing external resistors and capacitors. Evaluate the thermal resistance of the PCB copper area to ensure junction temperatures remain within the specified 125°C limit during worst-case power dissipation scenarios.

Voltage Regulators - Linear Regulator Controllers Part Context

This device belongs to the LT1573 series of low dropout regulator drivers designed to work with discrete PNP pass elements. It serves as a cost-effective solution for generating stable power rails in portable and battery-operated electronics. The series distinguishes itself through integrated protection features and compensation networks that simplify the design of high-performance linear power supplies compared to standard voltage regulator ICs.

Voltage Regulators - Linear Regulator Controllers Replacement Considerations

LT1573IS8#PBF