KA79M05TU

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

The KA79M05TU is a monolithic integrated circuit designed as a fixed negative voltage regulator. It provides a nominal output of -5V with an output current capability exceeding 0.5A. The device operates within a junction temperature range of 0°C to +125°C and accepts input voltages up to -35V. Key electrical specifications include a typical ripple rejection of 60 dB at 120 Hz, a dropout voltage of 1.1V at 500mA, and a quiescent current of approximately 3.0 mA.

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

• Internal thermal overload protection prevents damage during overheating conditions.
• Internal short-circuit current limiting safeguards the component against output faults.
• Output transistor safe area compensation ensures stable operation under varying load conditions.

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

• Power supplies requiring fixed negative voltage rails
• Battery-powered systems utilizing negative regulation
• Industrial control equipment power distribution

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

Verify that the specific part number matches the required TO-220 package configuration for through-hole mounting. Confirm compliance with environmental directives such as RoHS and REACH requirements relevant to your region. Ensure the supplier provides valid traceability documentation for the manufacturing lot. Check for any product change notices or end-of-life announcements from onsemi regarding this specific revision.

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

Select this component when a reliable, medium-current negative voltage source is needed without external feedback networks. The internal protections simplify design by removing the need for discrete safety circuits. Consider the thermal resistance characteristics for heat dissipation planning in enclosed environments. Verify that the input voltage range accommodates the maximum expected line variations safely.

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

This component belongs to the KA79MXX series of three-terminal negative voltage regulators originally developed by Fairchild Semiconductor and now managed by onsemi. The series includes various fixed output voltages ranging from -5V to -24V. The TU suffix indicates the specific TO-220 through-hole package variant suitable for general-purpose electronics applications.

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

LM79M05 is a documented equivalent within the same family offering identical electrical performance and pinout compatibility.