AP7312-1828FM-7

Overview

The AP7312-1828FM-7 is a dual fixed output low dropout linear regulator manufactured by Diodes Incorporated. It provides two independent channels with output voltages of 1.8V and 2.8V, each capable of delivering up to 150mA. The device operates within an input voltage range of 2V to 6V and features a typical quiescent current of 60µA. It includes high power supply rejection ratio (PSRR) of 65dB at 1kHz and fast transient response capabilities. Protection mechanisms include current limit, short circuit, and thermal shutdown. The component is housed in a DFN2018-6 package.

Feature Summary

• Dual channel architecture with independent enable pins for individual control
• Integrated protection against overcurrent, short circuits, and overheating
• Fast start-up time and excellent load/line transient response
• Stable operation with low ESR ceramic capacitors

Applications

• Cellular phones
• Smart phones and PDAs
• MP3/MP4 players
• Bluetooth headsets
• Low power applications

Procurement Notes

Verify the specific ordering suffix FM-7 confirms the DFN2018-6 package type. Confirm that the internal code corresponds to the 1.8V/2.8V output configuration. Check datasheet revision status as the AP7312 is not recommended for new designs; consider alternative components like the AP7345D for future projects. Ensure compliance with RoHS standards if required by your application specifications.

Selection Notes

Select this component when dual isolated rails are needed from a single input source. The 1.8V and 2.8V outputs suit digital logic and analog circuits respectively. Verify input voltage stays within 2V-6V limits. Ensure PCB layout supports the DFN2018-6 thermal pad requirements. Consider the 60µA quiescent current impact on battery life for portable devices.

Part Context

The AP7312 series belongs to Diodes Incorporated's line of low dropout regulators designed for portable electronics. This specific variant offers dual outputs in a compact surface-mount package. The family emphasizes low power consumption and fast transient response for mobile communication devices. The DFN2018-6 package provides efficient thermal dissipation relative to its small footprint.

Replacement Considerations

The datasheet explicitly recommends using the AP7345D instead of the AP7312 for new designs.