LF90ABV

Overview

The LF90ABV is a positive fixed linear voltage regulator from STMicroelectronics, delivering a stable 9 V output at up to 500 mA. Housed in a TO-220AB through-hole package, it operates within an ambient temperature range of -40°C to +85°C. The device features low quiescent current and includes internal thermal overload protection and safe area compensation to ensure reliable performance under varying load conditions.

Feature Summary

• Provides a fixed 9 V regulated output for sensitive circuitry
• Integrated thermal overload protection prevents damage during overheating
• Safe area compensation ensures stability across all operating conditions

Applications

• General-purpose power supply regulation
• Battery-powered equipment requiring stable voltage
• Embedded systems with linear regulation needs

Procurement Notes

Verify the exact suffix against official STMicroelectronics documentation to confirm pinout and thermal characteristics. Ensure the TO-220AB package matches your PCB footprint requirements. Cross-reference the datasheet revision date to guarantee compatibility with your design specifications before finalizing procurement.

Selection Notes

Select this component when a fixed 9 V output is required with moderate current demands. It is suitable for applications where low noise and simple implementation are prioritized over high efficiency. Consider thermal dissipation capabilities in the TO-220AB package for continuous operation.

Part Context

Part of the LFxx series of low-dropout regulators designed for general-purpose applications. This series offers robust protection features and stable performance in through-hole packages, making it a standard choice for industrial and consumer electronics requiring reliable linear voltage regulation.

Replacement Considerations

Check for direct equivalents such as LF90CV or other 9V LDOs from STMicroelectronics. Verify pin compatibility and thermal resistance values before substitution to maintain circuit integrity.