AZ78L05RTR-E1

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

The AZ78L05RTR-E1 is a three-terminal positive linear regulator from the AZ78LXX series, manufactured by Diodes Incorporated. It provides a fixed output voltage of 5V with an output current capability up to 100mA. The device operates within an input voltage range of 7.0V to 15V and maintains an output voltage tolerance of ±5% across the full temperature range (-40°C to 125°C). Key electrical parameters include a typical quiescent current of 3mA, a ripple rejection ratio of 62dB at 120Hz, and a maximum dropout voltage of 1.6V. The component is housed in an SOT-89 surface-mount package.

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

• Integrated internal short circuit current limiting for safe operation under overload conditions
• Built-in thermal overload protection circuit to prevent overheating during excessive power dissipation
• Requires no external components for basic regulation functionality
• Provides effective output impedance improvement compared to Zener diode/resistor combinations

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

• Logic system power supply regulation
• Microprocessor power supply circuits
• Motherboard I/O power supply
• Post-regulation for switching power supplies

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

Verify the manufacturer designation on official documentation, as the datasheet identifies BCD Semiconductor Manufacturing Limited as the producer while distributor listings may reference Diodes Incorporated. Confirm the specific E1 suffix indicates lead-free compliance and RoHS adherence. Ensure the SOT-89 package type matches the required footprint for the intended PCB layout before finalizing procurement.

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

Select this component when a fixed 5V output is required with moderate current demands up to 100mA. It is suitable for applications needing local on-card regulation to eliminate distribution problems associated with single-point regulation. Consider the thermal resistance characteristics of the SOT-89 package and ensure adequate heat sinking if operating near maximum current limits or high input voltages.

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

This part belongs to the AZ78LXX series of three-terminal positive regulators, which are designed for a wide variety of applications including instrumentation and HiFi equipment. The series offers multiple fixed output voltages and is available in various packages such as TO-92, SOT-223, and SOT-89. The R suffix specifically denotes the SOT-89 surface-mount package configuration.

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

AS78L05RTR-E1

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

What is the minimum input voltage required to maintain line regulation?

The minimum input voltage required to maintain line regulation is 7.0V.

Does the device require external capacitors for operation?

No external components are required for basic regulation, though bypass capacitors are recommended for optimum stability and transient response.