KA7924

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

The KA7924 is a three-terminal negative voltage regulator from the KA79XX series, manufactured by onsemi. It provides a fixed output voltage of -24 V with an output current capability in excess of 1 A. The device operates within an input voltage range up to -38 V and features internal thermal overload protection, short-circuit current limiting, and output transistor safe operating area compensation. It is housed in a TO-220 package.

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

• Internal thermal overload protection prevents damage during overheating conditions.
• Short-circuit protection limits current flow to safeguard the device under fault conditions.
• Output transistor safe operating area compensation ensures stable operation across varying loads.

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

• Negative power supply rails for digital logic circuits
• Split power supply systems requiring dual polarity outputs
• General-purpose linear regulation for electronic equipment

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

Verify the specific ordering suffix (e.g., TU) to confirm the package type and temperature rating. Confirm product status as the datasheet indicates potential obsolescence or transition periods following Fairchild Semiconductor integration into onsemi. Ensure compliance with life support policies if used in critical applications.

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

Select this component when a fixed -24 V negative rail is required with moderate current demands. Consider the dropout voltage and thermal resistance for heat dissipation requirements. Verify that the input voltage remains within the absolute maximum ratings to ensure reliable operation.

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

This part belongs to the KA79XX family of three-terminal negative regulators, which includes various fixed output voltages such as -5 V, -6 V, -8 V, -9 V, -12 V, -15 V, -18 V, and -24 V. The series is designed for simplicity and reliability in standard linear power supply designs.

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

LM7924 is a compatible alternative within the same functional family. Verify pinout compatibility and electrical specifications before substitution. Check for updated part numbers due to Fairchild to onsemi integration changes.