KA7912ATU

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

The KA7912ATU is a three-terminal negative linear voltage regulator from the KA79XXA series, manufactured by onsemi. It provides a fixed output voltage of -12 V with a tolerance of ±2%. The device supports an output current in excess of 1 A and operates within an input voltage range of -15.5 V to -27 V. Key electrical parameters include a maximum line regulation of 120 mV and load regulation of 150 mV at TJ = +25°C. The quiescent current is typically 6 mA. It features internal thermal overload protection, short-circuit protection, and output transistor safe operating area compensation.

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

• Integrated thermal overload protection for temperature-based safety
• Built-in short-circuit protection to limit fault currents
• Output transistor safe operating area compensation for robust operation

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

• Negative fixed output power supplies
• Split power supply systems requiring dual polarity rails
• Electronic circuits needing stable negative voltage references

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

Verify the specific ordering suffix 'A' confirms the ±2% output voltage tolerance, distinct from standard variants. Confirm the TO-220 package type matches the design requirements. Check for RoHS compliance status as indicated in the product documentation. Ensure the manufacturer source is recognized as onsemi or its authorized predecessors.

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

Select this component when a precise -12 V negative rail is required with tighter tolerance than standard regulators. The TO-220 package facilitates through-hole mounting and heatsink attachment. Consider the dropout voltage characteristics relative to the minimum input voltage available in the system design.

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

This part belongs to the KA79XXA family of three-terminal negative regulators. It shares functional similarities with the KA79XX series but offers improved output voltage accuracy. The device is designed for general-purpose applications where reliable negative voltage regulation is necessary without external feedback components.

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

KA7912TU serves as a direct replacement within the same series offering identical functionality but with ±4% tolerance.