AP78L05YG-13

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

The AP78L05YG-13 is a three-terminal positive linear voltage regulator from the AP78LXX series manufactured by Diodes Incorporated. It provides a fixed output voltage of 5V with an output current capability exceeding 100mA. The device operates within an input voltage range of 7V to 20V and supports an operating ambient temperature range of -20°C to +85°C. It utilizes a SOT-89 surface-mount package and includes internal protections such as thermal overload shutdown, short-circuit current limiting, and safe area protection for the output transistors.

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

• Integrated thermal overload protection prevents damage from excessive junction temperatures.
• Internal short-circuit current limiting restricts peak output current to safe levels.
• Output transistor safe area protection reduces short-circuit current as voltage across the pass transistor increases.
• Requires no external components for basic fixed-voltage regulation operation.

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

• Communication equipment
• CD-ROM drives
• DVD players
• Set-top boxes

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

Verify that the specific part number suffix corresponds to the SOT-89 package and tape-and-reel packaging configuration. Confirm compliance with RoHS directives and lead-free finish requirements as specified in the manufacturer's ordering information. Ensure the procurement channel is authorized to guarantee product authenticity and adherence to storage and handling guidelines for moisture-sensitive devices.

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

Select this component when a fixed 5V supply is required with moderate current demands up to 100mA. The SOT-89 package offers a compact surface-mount solution suitable for space-constrained designs. Consider the minimum input voltage requirement of 7V to ensure sufficient headroom for regulation. Evaluate thermal resistance characteristics relative to the PCB layout and ambient operating conditions to maintain junction temperatures within safe limits.

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

This regulator belongs to the AP78LXX series of three-terminal positive regulators, which also includes variants providing 8V and 12V outputs. The series is designed to replace Zener diode-resistor combinations, offering significantly improved output impedance and lower quiescent current. Available in TO-92, SO-8, and SOT-89 packages, the series supports various industrial standard package technologies for diverse mounting needs.

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

AP78L05SG-13 (SO-8 Package)

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

What internal protections are included in the AP78L05YG-13?

The device features internal thermal overload protection, internal short-circuit current limiting, and output transistor safe area protection.

What is the maximum output current capability?

The regulator can deliver an output current in excess of 100mA with adequate heat sinking.