AP7311-WG-7

Overview

The AP7311-WG-7 is a 150mA low dropout linear regulator from Diodes Incorporated, housed in an SOT25 package with green molding compound. It features a wide input voltage range of 2V to 6V and offers both fixed output options (1.0V to 3.3V) and adjustable outputs from 0.8V to 5.0V. The device exhibits very low quiescent current, typically 65µA at full load, and achieves fast start-up times of approximately 80µs. It maintains stability with low ESR ceramic capacitors as small as 1µF and provides comprehensive protection including current limit, short circuit, and thermal shutdown.

Feature Summary

• Integrates enable control for power management and ultra-fast transient response suitable for dynamic load applications.
• Provides robust fault protection through built-in current limiting, short-circuit clamping, and thermal shutdown mechanisms.
• Ensures stable regulation with minimal external components, requiring only low ESR ceramic capacitors for operation.

Applications

• Battery powered portable devices
• Notebook and desktop computer peripherals
• Portable communication equipment

Procurement Notes

Verify the specific output voltage suffix matches the design requirement, as the base part number covers multiple fixed and adjustable variants. Confirm the 'W' package code corresponds to the SOT25 form factor and that the '-7' suffix indicates tape and reel packaging. Ensure compliance with RoHS directives and lead-free finish specifications required by the target assembly process.

Selection Notes

Select this regulator when low ground current consumption is critical for battery life extension in portable electronics. Choose the fixed output variant for simplified designs or the adjustable version for custom voltage requirements within the 0.8V to 5.0V range. Ensure the application load does not exceed 150mA and that the input-to-output differential remains within the specified dropout characteristics for optimal efficiency.

Part Context

This component belongs to the AP7311 family of low dropout regulators designed for low-power applications. The series emphasizes energy efficiency through minimized quiescent current while maintaining fast transient response capabilities. The SOT25 package provides a compact footprint suitable for space-constrained portable devices, integrating essential protection features into a single monolithic solution.

Replacement Considerations

Direct substitutes include other AP7311 variants with different fixed output voltages or adjustable configurations. Verify pin compatibility and electrical parameters such as quiescent current and dropout voltage before substitution. Cross-reference package dimensions and marking codes to ensure mechanical fit and traceability alignment.