AP7343DQ-12FDZW-7

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

The AP7343DQ-12FDZW-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 1.2V 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 ripple rejection of 75dB at 1kHz, low output noise of 60µVrms, and a quiescent current as low as 35µA. The component utilizes the W-DFN2020-6 (SWP) Type A1 package.

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

• Integrated N-channel auto-discharge circuit for rapid output voltage decay upon shutdown
• High power supply ripple rejection capability suitable for noise-sensitive environments
• Automotive qualification compliant with AEC-Q100 standards and PPAP capable
• Low output noise performance designed for sensitive RF and communication circuits

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

• Infotainment power supplies
• Automotive RF supplies
• Camera modules
• 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 required for your PCB layout. Confirm the DQ designation indicates the inclusion of the internal discharge feature, which differs from non-discharge variants. Ensure compliance with RoHS and halogen-free requirements if mandated by your assembly specifications.

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

Select this variant when a fixed 1.2V rail is required alongside active output discharge functionality. The W-DFN2020-6 package offers a compact footprint for dense layouts. Verify that the 300mA load requirement does not exceed thermal limits given the specific PCB copper area available for heat dissipation through the exposed pad.

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 applications. The series is characterized by CMOS process technology, providing low on-resistance and high accuracy. The 'D' in the model name distinguishes it from standard versions by including the integrated auto-discharge resistor network.

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

AP7343Q-12FDZW-7 serves as the direct non-discharge equivalent within the same package.