UA79M05CKCSE3

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

The UA79M05CKCSE3 is a fixed-negative-voltage linear regulator from the µA79M series, manufactured by Texas Instruments. It delivers up to 500 mA of output current with a nominal voltage of -5 V. The device operates within an input voltage range of -7 V to -25 V and supports junction temperatures from 0°C to 125°C. Key electrical characteristics include a typical ripple rejection of 60 dB at 120 Hz and a dropout voltage of 1.1 V. It features internal short-circuit current limiting and thermal shutdown for overload protection.

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

• Internal short-circuit current limiting and thermal-shutdown features provide immunity to overload conditions.
• Output transistor safe-area compensation ensures stable operation across varying load and temperature conditions.
• Designed for on-card regulation to eliminate noise and distribution problems associated with single-point regulation.

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

• On-card negative voltage regulation
• Adjustable output voltage circuits using external components
• Power-pass element in precision regulators

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

Verify that the ordering suffix 'E3' corresponds to lead-free (RoHS compliant) specifications as indicated in manufacturer documentation. Confirm the package type matches the required PCB footprint, specifically TO-220 variants such as KC or KCS. Ensure the application design accounts for the specified thermal resistance values to maintain junction temperature within the recommended operating range during high-load scenarios.

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

Select this component when a fixed -5 V negative supply rail is required with currents up to 500 mA. Consider the thermal dissipation capabilities relative to the ambient temperature and board layout. Verify that the input voltage remains within the -7 V to -25 V operational limits under all expected line and load conditions to ensure proper regulation and device safety.

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

This part belongs to the µA79M series of fixed-negative-voltage integrated-circuit regulators. It serves as the complementary counterpart to the µA78M00 positive regulator series. The series is designed to provide reliable power management solutions for applications requiring dual polarity supplies or specific negative voltage rails in electronic systems.

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

Direct substitutes include UA79M05CKCS and UA79M05CKTPR. Verify pinout compatibility and thermal performance characteristics before substitution.