KA79M12

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

The KA79M12 is a fixed negative voltage regulator from the KA79MXX series, manufactured by onsemi. It provides a nominal output of -12V with a maximum output current capability exceeding 0.5A. The device operates within an input voltage range up to -35V and supports junction temperatures from 0°C to +125°C. Key electrical parameters include a typical quiescent current of 3mA, ripple rejection of 60dB at 120Hz, and a dropout voltage of 1.1V at 500mA load. Line regulation is specified at 80mV, while load regulation reaches 240mV.

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

• Integrated internal thermal overload protection
• Internal short circuit current limiting
• Output transistor safe area compensation

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

• Fixed negative voltage power supplies
• Portable equipment requiring stable negative rails
• General-purpose electronic circuits needing regulated negative bias

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

Verify component authenticity through authorized distribution channels. Confirm package type matches design requirements, as the series includes TO-220 and D-PAK variants. Check for RoHS compliance status specific to the manufacturing lot. Ensure the ordering suffix aligns with the desired packaging format before finalizing procurement orders.

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

Select this component when a reliable -12V negative rail is required for medium-current applications. Consider the thermal resistance characteristics for heat dissipation planning in enclosed designs. Verify that the input voltage remains within the absolute maximum ratings to prevent device damage during transient conditions or operational faults.

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

This part belongs to the KA79MXX family of three-terminal negative voltage regulators. The series offers multiple fixed output voltages including -5V, -6V, -8V, -12V, -15V, -18V, and -24V. These monolithic integrated circuits are designed for simplicity, requiring no external components for basic operation while providing robust protection features.

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

• KA79M12R
• LM79M12

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

What is the maximum input voltage for the KA79M12?

The maximum input voltage is -35V.

Does the KA79M12 require external capacitors for stability?

No external components are required for basic operation, though capacitors may be added to improve transient response and ripple rejection.