KA79L05AZBU

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KA79L05AZBU is a three-terminal negative voltage regulator manufactured by Fairchild Semiconductor, operating within an ambient temperature range of 0°C to +125°C. It provides a fixed output voltage of -5V with a maximum continuous output current of 100mA. The device accepts input voltages up to -30V and features internal thermal overload protection and short-circuit current limiting. Electrical characteristics include a line regulation of 150mV and load regulation of 60mV under specified conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated thermal overload protection prevents damage during excessive power dissipation events.
• Internal short-circuit current limiting safeguards the component against output faults.
• Requires no external components for basic operation in standard low-current applications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Local or card-level voltage regulation for electronic circuits
• Noise elimination in single-point regulated power supplies
• Replacement for discrete Zener diode and resistor combinations

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the datasheet lists multiple variants such as TO-92, 8-SOP, and SOT-89. Confirm the manufacturer origin, noting that this part was originally produced by Fairchild Semiconductor before corporate restructuring. Ensure the requested revision aligns with current production capabilities.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator when a stable negative voltage rail is required for low-power loads up to 100mA. Consider the dropout voltage requirements relative to the minimum input voltage available in the system. Evaluate the thermal performance based on the expected junction-to-ambient resistance and the maximum allowable power dissipation for the chosen package style.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the KA79LXXA series of three-terminal negative voltage regulators. The series includes various fixed output voltage options ranging from -5V to -24V. These devices are designed to offer high reliability and robustness through built-in protection mechanisms, making them suitable for general-purpose power management tasks in consumer and industrial electronics.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Compatible substitutes include the MC79L05ACDR2G and LM79L05ACZ. Verify pinout compatibility and ensure that the replacement device meets the same electrical specifications regarding output current, voltage tolerance, and operating temperature range.