AP7343DQ-11FDZW-7

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

The AP7343DQ-11FDZW-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 1.1V output with a guaranteed maximum current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and maintains an output accuracy of ±1%. It features a ripple rejection of 75dB at 1kHz and a low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is as low as 35µA. The component includes an enable pin, thermal shutdown, and short-circuit protection. It is housed in a W-DFN2020-6 (SWP) Type A1 package.

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

• Automotive compliant design qualified to AEC-Q100 Grade 1 standards for high reliability applications
• Integrated active discharge circuit ensures the output discharges when disabled
• High power density packaging allows for dense PCB layout and minimal footprint
• Low noise performance suitable for sensitive RF and infotainment subsystems

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

• Infotainment power supplies
• Automotive RF supplies
• Cameras
• Automotive POL in ADAS
• 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. Confirm the DQ designation indicates the inclusion of the internal auto-discharge feature, which distinguishes it from standard Q variants. Ensure compliance with PPAP requirements if the application mandates automotive production part approval documentation.

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

Select this component for designs requiring a fixed 1.1V rail with high precision and low noise. The integrated discharge function is critical for systems needing defined startup states upon enabling. Verify that the input voltage remains within the 1.7V to 5.25V range under all operating conditions. Consider the thermal resistance characteristics of the W-DFN2020-6 package for heat dissipation planning.

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

This device belongs to the AP7343Q family of low dropout regulators designed specifically for automotive environments. The series offers various fixed output voltages and package options to support diverse system architectures. The AP7343DQ variant specifically incorporates an output discharge mechanism, providing enhanced control over the regulator's state during shutdown periods compared to non-discharge versions.

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

AP7343Q-11FDZW-7