KA79L12AZTA

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

The KA79L12AZTA is a fixed negative voltage regulator from the KA79LXXA series, manufactured by onsemi. It provides a nominal output voltage of -12V with a tolerance of ±5%. The device supports an output current up to 100mA and operates within a junction temperature range of 0°C to +125°C. It utilizes a TO-92 package (TO-226AA) with three terminals: Ground, Input, and Output.

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

• Integrated thermal overload protection shuts down the circuit during excessive power conditions.
• Internal short-circuit current limiting protects against fault currents.
• Designed for operation without external components in most low-current applications.

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

• On-card regulation for electronic circuits
• General purpose negative voltage supply generation
• Applications requiring modest current levels at regulated negative voltages

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

Verify the manufacturer origin as Fairchild Semiconductor products are now part of onsemi. Confirm the specific suffix 'AZTA' corresponds to the TO-92 package and tape-and-reel or bulk availability as per the distributor's current listing. Ensure the component meets RoHS compliance requirements if applicable to your assembly process.

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

Select this component when a stable -12V rail is required for loads drawing up to 100mA. Consider the dropout voltage characteristics relative to your input supply ripple. Ensure adequate heat dissipation is planned if the input-output differential is high, as the TO-92 package has limited thermal capacity compared to larger packages.

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

This regulator belongs to the KA79LXXA family of 3-terminal negative voltage regulators. The series includes variants for -5V, -8V, -12V, -15V, -18V, and -24V outputs. These devices serve as cost-effective alternatives to resistor/Zener diode approaches for providing regulated negative potentials in compact designs.

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

Compatible substitutes include LM79L12ACZ/NOPB and MC79L12ACP. Verify pinout compatibility and thermal performance specifications before substitution. Note that some equivalents may differ in quiescent current or ripple rejection specifications.