KA7912TU

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

The KA7912TU is a three-terminal negative voltage regulator from the KA79XX series, manufactured by ON Semiconductor. It provides a fixed output voltage of -12 V with a tolerance of ±4%. The device supports an output current in excess of 1 A and operates within a temperature range of 0 to +125 °C. It utilizes a TO-220 package with dual gauge leads. Key electrical characteristics include a maximum input voltage of -35 V, a dropout voltage of 2 V at 1 A load, and a typical quiescent current of 6 mA.

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

• Internal thermal overload protection prevents damage during overheating conditions.
• Integrated short-circuit protection limits current flow during fault events.
• Output transistor safe operating area compensation ensures stability under varying loads.

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

• Negative fixed output power supplies
• Split power supply systems requiring negative rails
• Electronic equipment requiring regulated negative voltage sources

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

Verify the specific ordering suffix TU corresponds to the TO-220 dual gauge package configuration. Confirm that the standard ±4% tolerance meets system requirements, as higher precision variants like the KA7912ATU exist. Ensure compatibility with ON Semiconductor's updated nomenclature following the Fairchild integration, checking for any underscore to dash changes in official documentation.

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

Select this component when a stable -12 V negative rail is required for analog or digital circuits. The 1 A current capability suits moderate power applications. Consider the thermal resistance values for heat sink design if operating near maximum load. Verify input voltage stays within the -35 V absolute maximum rating to prevent device failure.

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

This part belongs to the KA79XX/LM79XX family of three-terminal negative regulators. These devices are widely used in general-purpose power supply designs. The KA7912TU specifically denotes the -12 V output variant in the standard tolerance series, packaged in a robust TO-220 format suitable for through-hole mounting on printed circuit boards.

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

LM7912CT is a compatible alternative within the same family offering similar functionality in a single gauge TO-220 package. KA7912ATU provides tighter ±2% voltage tolerance if precision is required. Verify pinout and thermal characteristics match before substitution.