AP7315D-15W5-7

Overview

The AP7315D-15W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 1.5V output with a guaranteed maximum load current of 150mA. The device operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz. It incorporates an internal discharge resistor for rapid output voltage decay upon shutdown, alongside overcurrent protection. The component utilizes a CMOS process and is housed in a surface-mount SOT-25 package.

Feature Summary

• Integrated auto-discharge circuitry that rapidly pulls the output voltage to ground when the enable pin is deactivated
• High ripple rejection capability designed to minimize noise interference in sensitive analog and RF circuits
• Low quiescent current consumption optimized for battery-powered portable electronic devices
• Built-in short-circuit protection limits output current to prevent thermal damage during fault conditions

Applications

• RF power supply stages requiring low noise regulation
• Portable video equipment and media players
• Wireless communication adapters and modules
• Camera systems and handheld smart devices

Procurement Notes

Verify the specific suffix W5 corresponds to the SOT-25 package configuration required for your PCB layout. Confirm the D designation indicates the presence of the output discharge feature, as non-discharge variants exist within the same family. Ensure compatibility with RoHS 3 compliance standards if operating in regulated markets. Cross-reference the manufacturer's ordering information to validate availability and packaging quantities before finalizing procurement plans.

Selection Notes

Select this variant when a built-in mechanism to discharge residual output charge is necessary for system safety or rapid power cycling. The SOT-25 package offers a compact footprint suitable for dense board layouts compared to larger regulators. Consider the 1.5V fixed output level against the specific voltage requirements of the downstream load. Evaluate the 150mA current limit to ensure it meets peak transient demands without triggering fold-back protection mechanisms.

Part Context

This component belongs to the AP7315 series of low dropout regulators from Diodes Incorporated. The series is characterized by high accuracy and low noise performance using CMOS technology. The 'D' suffix specifically denotes the inclusion of an output discharge function, distinguishing it from standard versions. The 'W5' suffix identifies the physical SOT-25 five-pin surface mount package used for integration into modern electronic assemblies.

Replacement Considerations

Direct replacements must match the 1.5V output, 150mA current rating, and SOT-25 package. Verify if the application requires the specific output discharge feature; if not, the AP7315-15W5-7 may be suitable. Ensure any substitute maintains similar PSRR and quiescent current specifications to preserve system stability and noise performance.