AP78L12YG-13

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

The AP78L12YG-13 is a three-terminal positive linear voltage regulator from the AP78LXX series by Diodes Incorporated. It provides a fixed 12V output with an output current capability exceeding 100mA. The device features internal thermal overload protection, short-circuit current limiting, and safe area protection for the output transistor. It operates within an ambient temperature range of -20°C to +85°C and supports input voltages up to 27V. The component is housed in a SOT-89 surface-mount package.

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.

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 matches the required SOT-89 package configuration and tape-and-reel packaging format. Confirm compliance with RoHS directives and ensure the 'Green' molding compound specification aligns with project material requirements. Cross-reference pin assignments against the target PCB layout to prevent installation errors.

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

Select this regulator when local on-card regulation is needed to eliminate distribution problems associated with single-point regulation. It serves as a replacement for Zener diode/resistor combinations, offering improved output impedance and lower quiescent current. Ensure the application requires a fixed 12V output and can accommodate the specified operating temperature range.

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

This component belongs to the AP78LXX series of three-terminal positive regulators, which includes 5V, 8V, and 12V variants. The series is designed for use in logic systems, instrumentation, HiFi equipment, and other solid-state electronic devices. It utilizes industrial standard plastic package technologies including TO-92, SOT-89, and SO-8.

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

AP78L12VL-A

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

What are the primary internal protections included in the AP78L12?

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

Does the AP78L12 require external components for basic operation?

No external components are required for basic regulation, although capacitors may be recommended depending on the specific application circuit and distance from the power supply filter.