onsemi

KA78L18AZBU

KA78L18AZBU Description

The KA78L18AZBU is a linear voltage regulator designed for applications requiring a stable 18V output with a maximum input voltage of 35V. Manufactured by onsemi, this device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Through Hole TO92-3 package. Despite being marked as obsolete, the KA78L18AZBU remains a reliable choice for specific applications due to its robust design and performance characteristics.

KA78L18AZBU Features

• Output Type: Fixed at 18V, ensuring consistent voltage delivery.
• Input Voltage Range: Capable of handling up to 35V, providing flexibility in power supply requirements.
• Output Current: Delivers a steady 100mA, suitable for low-power applications.
• Output Configuration: Positive, ideal for applications requiring a positive voltage supply.
• Low Quiescent Current: At 6mA, the KA78L18AZBU minimizes power consumption during idle states.
• High PSRR: With a Power Supply Rejection Ratio of 48dB at 120Hz, it effectively filters out noise from the input power supply.
• Protection Features: Equipped with Over Temperature and Short Circuit protection, enhancing reliability and longevity.
• Operating Temperature Range: Functions reliably from 0°C to 125°C, making it suitable for a wide range of environmental conditions.
• Moisture Sensitivity Level: MSL 1 (Unlimited), ensuring it is not susceptible to moisture damage during storage or handling.
• Compliance: REACH Unaffected, ensuring compliance with environmental and safety regulations.

KA78L18AZBU Applications

The KA78L18AZBU is ideal for applications that require a stable, low-power 18V supply. Its compact Through Hole TO92-3 package makes it suitable for space-constrained designs. Key applications include:

• Consumer Electronics: Ideal for low-power devices such as portable radios, small appliances, and battery-operated gadgets.
• Industrial Equipment: Suitable for control systems, sensors, and actuators that require a stable 18V supply.
• Automotive: Can be used in various automotive applications where a reliable, low-power supply is needed.
• Medical Devices: Applicable in medical equipment that requires precise voltage regulation and low power consumption.

Conclusion of KA78L18AZBU

The KA78L18AZBU, despite its obsolete status, remains a valuable component for applications requiring a stable 18V output. Its low quiescent current, high PSRR, and robust protection features make it a reliable choice for low-power applications. The wide operating temperature range and moisture sensitivity level ensure it can withstand various environmental conditions. For designers seeking a compact, reliable, and efficient voltage regulator, the KA78L18AZBU offers a proven solution.