DI78M05UAB

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

The DI78M05UAB is a positive fixed voltage linear regulator from the Diotec Semiconductor DI7xxAB series, housed in an SOT-89 surface-mount package. It provides a nominal output voltage of 5.0 V with a tolerance of ±5%, supporting a maximum output current of 0.5 A. The device operates with an input voltage up to 35 V and features a typical dropout voltage of 2.0 V at full load. Key electrical characteristics include a quiescent current of approximately 4.2 mA, a ripple rejection ratio of 80 dB at 120 Hz, and a junction-to-ambient thermal resistance of 80 K/W. It functions reliably within a junction temperature range of -40°C to +125°C.

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

• Integrated thermal overload protection for safe operation under excessive heat conditions
• Short circuit protection capability ensures device safety during output faults
• Fixed voltage output eliminates external resistor requirements for standard regulation

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

• Active SCSI termination regulators
• Post regulators for switch mode DC-DC converters
• Battery backed-up regulated supply circuits

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

Verify the specific ordering code against the manufacturer's official documentation to ensure correct pinout and tolerance specifications. Confirm that the SOT-89 package variant matches your PCB footprint requirements. Check for RoHS compliance status and REACH registration details relevant to your region. Ensure storage and handling procedures account for Moisture Sensitivity Level 3 classification to prevent soldering defects during assembly.

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

Select this component when a compact surface-mount solution is required for low-noise linear regulation. The SOT-89 package offers a balance between thermal performance and board space efficiency compared to through-hole alternatives. Consider the 2.0 V dropout voltage when designing for minimum input-output differential constraints. Evaluate the 80 K/W thermal resistance against your expected power dissipation and ambient temperature conditions to determine if additional heatsinking or copper area expansion is necessary for reliable operation.

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

This part belongs to the DI7xxAB series of positive fixed voltage regulators manufactured by Diotec Semiconductor. The series includes various output voltage options sharing similar internal protection architectures and packaging standards. These devices are designed for commercial and industrial applications requiring stable voltage regulation in space-constrained environments.

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

Cross-reference with other DI7xxAB series variants for different voltage outputs. Verify pin compatibility before substituting with generic LDO equivalents.