AP7313-28SAG-7

Overview

The AP7313-28SAG-7 is a fixed-output low dropout linear regulator manufactured by Diodes Incorporated. It provides a stable 2.8V output with a maximum continuous load current of 150mA. The device operates within an input voltage range of 2V to 6V and maintains a typical quiescent current of 65µA across the full load spectrum. It features a fast start-up time of 80µs and offers a power supply rejection ratio (PSRR) of 65dB at 100Hz. The regulator ensures stability using low ESR ceramic capacitors, typically 1µF, and includes built-in current limit, short circuit, and thermal shutdown protections.

Feature Summary

• Very low quiescent current consumption for extended battery life in portable devices
• Fast transient response capability supporting rapid load changes from standby to active modes
• Integrated protection mechanisms including current limiting, short circuit prevention, and thermal shutdown
• Stable operation with small value low ESR ceramic output capacitors

Applications

• Battery powered devices
• Portable devices
• Notebook and desktop computers and peripherals
• CD-ROM, DVD and LAN cards

Procurement Notes

Verify that the component matches the specific SOT23 package configuration and Green molding compound designation indicated by the SA suffix. Confirm RoHS compliance status and lead-free finish requirements against project specifications. Ensure ordering quantities align with standard tape and reel packaging constraints provided by the manufacturer.

Selection Notes

Select this regulator when a fixed 2.8V rail is required with minimal ground current draw. It is suitable for applications requiring fast recovery from sleep states or high-frequency load transitions. Verify that the input voltage remains within the 2V to 6V operational window and that the thermal environment supports the specified junction temperature limits under maximum load conditions.

Part Context

This component belongs to the AP7313 series of 150mA low dropout linear regulators. The series offers multiple fixed output voltage options ranging from 1.0V to 3.3V. All variants share common electrical characteristics, including low quiescent current and fast transient response, while differing primarily in their regulated output voltage levels and corresponding package identification codes.

Replacement Considerations

Other part numbers within the AP7313 family provide alternative fixed output voltages such as AP7313-33SAG-7 for 3.3V or AP7313-18SAG-7 for 1.8V. These substitutes maintain identical pinouts, package dimensions, and electrical performance profiles, allowing for direct interchangeability if the system design permits different voltage rails.

FAQ

What type of output capacitor is recommended for stability?

The AP7313-28SAG-7 is stable with low ESR ceramic capacitors. A capacitance value between 1µF and 4.7µF with an ESR range of 10mΩ to 200mΩ is recommended.

How does the device handle short circuit conditions?

Short circuit protection triggers when the output voltage drops below 200mV, clamping the output current to approximately 50mA to prevent damage.

Is a minimum load current required for regulation?

No, the device remains stable and regulated even under no-load conditions without requiring a minimum load current.