AP7343DQ-10W5-7

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

The AP7343DQ-10W5-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 1.0V output with a guaranteed maximum current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio performance of 75dB at 1kHz. It incorporates an integrated discharge resistor for rapid output voltage decay upon shutdown. The component is housed in a compact SOT-25-5 surface-mount package.

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

• Integrated auto-discharge circuitry ensures rapid output voltage decay when the enable pin is deactivated, supporting efficient system power management.
• High ripple rejection capability effectively suppresses input noise, making it suitable for sensitive RF and communication circuits.
• Automotive qualification includes AEC-Q100 Grade 1 certification and PPAP capability for use in demanding vehicle environments.

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

• Infotainment power supplies
• Automotive RF supplies
• Camera modules
• Point-of-load regulation in ADAS systems

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

Verify that the specific part number suffix matches the required discharge functionality and package type. Confirm compliance with RoHS and halogen-free standards as specified in the manufacturer documentation. Ensure the ordering code aligns with the intended tape and reel packaging quantity for production integration.

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

Select this variant specifically for applications requiring automatic output discharge upon disable. Compare against non-discharge versions if holding charge is preferred. Verify thermal dissipation requirements based on the SOT-25 package characteristics and expected ambient operating temperatures within the automotive grade range.

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

This component belongs to the AP7343Q family of low dropout regulators designed for automotive electronics. The 'D' suffix indicates the inclusion of an internal discharge resistor, distinguishing it from standard variants. It utilizes CMOS technology to achieve low quiescent current while maintaining high accuracy and stability across varying load conditions.

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

AP7343Q-10W5-7 (Non-discharge version)

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

What is the function of the 'D' suffix in the AP7343DQ-10W5-7 model?

The 'D' suffix indicates that the regulator includes an integrated N-channel auto-discharge resistor. This feature actively pulls the output voltage down to ground when the enable pin is driven low, ensuring faster shutdown times compared to non-discharge variants.

Is the AP7343DQ-10W5-7 suitable for automotive infotainment systems?

Yes, the datasheet explicitly lists infotainment power supplies as a primary application. The device is AEC-Q100 qualified and manufactured in IATF 16949 certified facilities, meeting the reliability standards required for automotive electronics.