STMicroelectronics

L78L09ACZ

L78L09ACZ Description

The L78L09ACZ is a linear voltage regulator IC manufactured by STMicroelectronics, designed for applications requiring a stable 9V output with a maximum current of 100mA. With a fixed output configuration, this device ensures consistent performance across a wide range of input voltages, up to a maximum of 30V. The L78L09ACZ operates within an extensive temperature range of 0°C to 125°C, making it suitable for various industrial and electronic applications.

L78L09ACZ Features

• Output Type: Fixed, providing a stable 9V output.
• Voltage - Input (Max): 30V, allowing for a wide range of input voltages.
• Current - Output: 100mA, suitable for low to medium power applications.
• Number of Regulators: 1, simplifying circuit design.
• Output Configuration: Positive, ideal for standard power supply needs.
• Current - Supply (Max): 6 mA, ensuring low power consumption.
• Product Status: Obsolete, indicating limited availability and potential for replacement.
• REACH Status: REACH Unaffected, complying with European chemical regulations.
• RoHS Status: ROHS3 Compliant, adhering to environmental standards.
• Moisture Sensitivity Level (MSL): 1 (Unlimited), allowing for flexible handling and storage.
• Operating Temperature: 0°C ~ 125°C, suitable for harsh environments.
• Current - Quiescent (Iq): 5.5 mA, minimizing power loss.
• PSRR: 44dB (120Hz), ensuring high power supply rejection ratio.
• Protection Features: Over Current, Over Temperature, Short Circuit, enhancing reliability.

L78L09ACZ Applications

The L78L09ACZ is ideal for applications where a stable and reliable 9V power supply is required. Some specific use cases include:

• Portable Electronics: Powering low-power devices such as calculators, digital watches, and small sensors.
• Industrial Controls: Providing a stable power source for control panels and sensors in harsh environments.
• Telecommunications: Supplying power to communication equipment in remote locations.

Conclusion of L78L09ACZ

The L78L09ACZ is a reliable and efficient linear voltage regulator, offering a stable 9V output with a maximum current of 100mA. Its wide input voltage range, low power consumption, and robust protection features make it suitable for a variety of applications. However, its obsolete status means that users should consider alternative models for new designs. Despite this, the L78L09ACZ remains a viable option for existing systems that require its specific output characteristics.