AP78L08SG-13

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

The AP78L08SG-13 is a three-terminal positive linear regulator from the AP78LXX series, providing a fixed output voltage of 8.0V with ±5% tolerance over operating temperature ranges. It delivers an output current in excess of 100mA and features internal thermal overload protection, short-circuit current limiting, and safe area protection for output transistors. The device operates within an input voltage range of 10.5V to 23V and an ambient temperature range of -20°C to +85°C. Packaged in a plastic SO-8 low-profile surface-mount format, it eliminates the need for external components.

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

• Internal thermal overload protection prevents damage from excessive junction temperatures.
• Built-in short-circuit current limiting restricts peak output current to safe values.
• 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 order matches the AP78L08SG-13 part number to ensure the correct 8V output voltage and SO-8 package configuration. Confirm compliance with RoHS directives and lead-free finish requirements if applicable to the manufacturing process. Check for any specific environmental or handling instructions related to the plastic molding compound used in the SO-8 package before integration into the final assembly.

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

Select this component when a fixed 8V regulation is required with moderate current demands up to 100mA. The SO-8 package is suitable for space-constrained surface-mount designs. Ensure the input voltage remains within the 10.5V to 23V range to maintain proper line regulation. Consider the thermal resistance characteristics of the SO-8 package on FR-4 PCBs for adequate heat dissipation under load conditions.

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

The AP78L08SG-13 belongs to the AP78LXX series of three-terminal positive regulators, which also includes variants for 5V and 12V outputs. This series is designed to replace Zener diode/resistor combinations, offering improved output impedance and lower quiescent current. The SG-13 suffix indicates the SO-8 package type with tape-and-reel packaging, facilitating automated assembly processes.

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

Direct substitutes include the UA78L08ACD from Texas Instruments, which offers similar electrical characteristics and pinout compatibility for direct replacement in existing designs without circuit modifications.