AP7347DQ-18FDZW-7B

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

The AP7347DQ-18FDZW-7B is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 1.8V output with ±1% accuracy and supports up to 500mA of guaranteed output current. The device operates within a 1.7V to 5.5V input voltage range and features a 75dB ripple rejection at 1kHz alongside a low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is maintained at a maximum of 60µA. It utilizes a W-DFN2020-6 (SWP) package and includes integrated enable, thermal shutdown, and short-circuit protection.

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

• Automotive-grade qualification compliant with AEC-Q100 standards for high reliability in demanding environments
• Integrated active discharge function on the output pin to ensure safe system startup when disabled
• High power density packaging with wettable flanks to facilitate automated inspection and reliable soldering

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

• Infotainment power supplies
• Automotive RF supplies
• ADAS point-of-load applications
• Automotive wireless communication systems

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

Verify that the specific suffix 'B' corresponds to the intended tape and reel configuration as defined in the manufacturer's ordering information. Confirm compliance requirements such as RoHS and halogen-free status align with project specifications. Ensure the W-DFN2020-6 footprint matches the PCB layout guidelines provided in the datasheet to maintain thermal performance and mechanical stability.

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

Select this component for designs requiring strict automotive reliability and minimal board space. The W-DFN2020-6 package offers superior thermal dissipation compared to smaller alternatives. Verify that the required output voltage of 1.8V is available in the standard fixed voltage lineup. Consider the 60µA quiescent current for standby power budgets and ensure adequate input capacitance is placed near the VIN pin for stability.

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

This part belongs to the AP7347DQ family of low dropout regulators designed specifically for noise-sensitive automotive electronics. The series is characterized by high power supply rejection ratio and low output noise, making it suitable for powering sensitive analog and RF circuits. Manufactured in IATF 16949 certified facilities, the family supports production part approval processes for automotive integration.

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

AP7347DQ-18FDZW-7