Texas Instruments

UA78L09ACPKG3

UA78L09ACPKG3 Description

The UA78L09ACPKG3 is a linear voltage regulator designed for applications requiring a stable 9V output with a maximum input voltage of 24V. Manufactured by Texas Instruments, this device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Surface Mount SOT89-3 package. The regulator offers a fixed output configuration, ensuring a consistent 9V supply with a maximum output current of 100mA. It features a dropout voltage of 1.7V at 40mA, which is relatively low, enhancing its efficiency in various power management scenarios. The UA78L09ACPKG3 also includes comprehensive protection features such as over current, over temperature, reverse polarity, and short circuit protection, ensuring robustness and reliability in diverse operating conditions.

UA78L09ACPKG3 Features

• Fixed Output Voltage: The UA78L09ACPKG3 provides a stable 9V output, making it suitable for applications requiring a consistent power supply.
• High Input Voltage Range: With a maximum input voltage of 24V, this regulator can handle a wide range of input voltages, offering flexibility in power source selection.
• Low Dropout Voltage: The maximum dropout voltage of 1.7V at 40mA ensures high efficiency, even when the input voltage is close to the output voltage.
• Protection Features: Over current, over temperature, reverse polarity, and short circuit protection enhance the reliability and durability of the device.
• Surface Mount Packaging: The SOT89-3 package is ideal for surface mount applications, providing a compact and efficient solution for space-constrained designs.
• Operating Temperature Range: The device operates reliably within a temperature range of 0°C to 125°C, making it suitable for a variety of industrial and consumer applications.
• Power Supply Rejection Ratio (PSRR): A PSRR of 45dB at 120Hz ensures minimal noise and ripple in the output voltage, contributing to high performance in sensitive electronic circuits.

UA78L09ACPKG3 Applications

The UA78L09ACPKG3 is well-suited for a variety of applications where a stable 9V supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering small electronic devices such as radios, amplifiers, and portable audio equipment.
• Industrial Applications: Suitable for powering sensors, actuators, and control systems in industrial environments.
• Telecommunications: Can be used in power management for communication modules and small network devices.
• Automotive: Applicable in automotive electronics for powering various subsystems, given its wide operating temperature range and robust protection features.
• Medical Devices: Provides a reliable power supply for medical equipment where stability and low noise are critical.

Conclusion of UA78L09ACPKG3

The UA78L09ACPKG3 from Texas Instruments is a versatile and reliable linear voltage regulator designed for applications requiring a stable 9V supply. Its low dropout voltage, comprehensive protection features, and wide operating temperature range make it a robust choice for various industrial and consumer applications. The compact SOT89-3 package and surface mount configuration ensure ease of integration into modern electronic designs. Whether used in consumer electronics, industrial systems, or automotive applications, the UA78L09ACPKG3 offers a reliable and efficient power management solution.