KA7905TU

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

The KA7905TU is a three-terminal negative voltage regulator from the KA79XX series, manufactured by onsemi. It provides a fixed output voltage of -5 V with a tolerance of ±4%. The device supports an output current in excess of 1 A and operates within an input voltage range of -7 V to -25 V. It features internal thermal overload protection, short-circuit protection, and output transistor safe operating area compensation. The component is housed in a TO-220 package with dual gauge leads and is rated for an operating temperature range of 0°C to +125°C.

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

• Integrated thermal overload protection prevents damage during overheating conditions.
• Built-in short-circuit protection safeguards the device against output faults.
• Output transistor safe operating area compensation ensures stability under varying load conditions.

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

• Negative fixed output power supply regulation
• Split power supply systems requiring negative rails
• Local on-card voltage regulation

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

Verify the manufacturer source carefully as this part originated from Fairchild Semiconductor before integration into onsemi. Confirm that the ordering suffix TU corresponds to the TO-220 dual gauge package. Check for updated part numbers if underscore characters were replaced with dashes during system migration. Ensure compliance with RoHS and REACH requirements relevant to your region.

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

Select this component when a stable -5 V negative rail is required for analog or digital circuits. It is suitable for applications needing over 1 A of continuous current. Consider the thermal resistance characteristics and ensure adequate heat sinking is provided to maintain junction temperatures within the specified operating range. Verify input voltage constraints to prevent exceeding maximum ratings.

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

This regulator belongs to the KA79XX family of three-terminal negative voltage regulators. The series includes various fixed output voltages such as -6 V, -8 V, -12 V, -15 V, -18 V, and -24 V. The KA7905TU specifically targets -5 V applications. Similar variants include the KA7905ATU with tighter tolerance and LM7905CT in a single gauge package.

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

KA7905ATU offers improved voltage tolerance. LM7905CT provides equivalent functionality in a single gauge TO-220 package. Other KA79xx series parts serve similar roles with different fixed output voltages.