AP7343DQ-18FDZW-7

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

The AP7343DQ-18FDZW-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 1.8V output with a guaranteed maximum current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and supports an ambient temperature range from -40°C to +125°C. It features high output voltage accuracy of ±1%, ripple rejection of 75dB at 1kHz, and low output noise of 60µVrms. The component utilizes W-DFN2020-6 (SWP) Type A1 packaging and includes integrated short-circuit protection and thermal shutdown.

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

• Automotive compliant design qualified to AEC-Q100 Grade 1 standards for reliable operation in demanding environments
• Integrated enable pin allows precise control over regulator activation and shutdown states
• Built-in auto-discharge circuit ensures rapid output voltage decay when the device is disabled
• High power supply rejection ratio minimizes noise impact on sensitive downstream circuits

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

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

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

Verify that the specific part number suffix FDZW corresponds to the W-DFN2020-6 (SWP) Type A1 package configuration required for your PCB layout. Confirm the D suffix indicates the presence of the internal discharge resistor, as this affects shutdown behavior compared to non-discharge variants. Ensure compliance with RoHS and halogen-free material requirements if mandated by your assembly specifications.

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

Select this variant when a compact footprint is necessary alongside automotive qualification requirements. The W-DFN2020-6 package offers superior thermal dissipation compared to smaller alternatives. Consider the discharge feature if fast output voltage collapse is critical during system sleep modes. Verify that the 300mA load capability aligns with peak current demands of the target application circuitry.

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

This component belongs to the AP7343Q family of low dropout regulators designed specifically for automotive electronics. The series emphasizes low noise and high precision to support sensitive analog and digital loads. Manufacturing occurs in IATF 16949 certified facilities, ensuring consistent quality control aligned with automotive industry standards for production part approval processes.

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

AP7343Q-18FDZW-7 serves as the primary alternative without the discharge function.