AP7343Q-33W5-7

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

The AP7343Q-33W5-7 is an automotive-compliant, fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.3V with a guaranteed maximum output current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and maintains high accuracy with a typical ripple rejection of 75dB at 1kHz. Designed for noise-sensitive environments, it features low output noise and ultra-low quiescent current. The component is housed in a surface-mount SOT-25 package and supports an extended operating temperature range from -40°C to +125°C.

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

• Automotive-grade qualification compliant with AEC-Q100 standards and PPAP capable
• High power supply ripple rejection capability for sensitive analog circuits
• Integrated enable pin for precise power management and shutdown control
• Low output noise performance suitable for RF and communication applications

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 the specific suffix W5 corresponds to the SOT-25 package configuration required for your PCB layout. Confirm that the non-discharge variant meets system requirements when powering down. Ensure compliance with RoHS and halogen-free material definitions during procurement. Validate that the supplier source matches official manufacturer distribution channels to guarantee authenticity.

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

Select this part for designs requiring strict automotive reliability and high PSRR. The fixed 3.3V output eliminates external resistor networks. Verify input voltage stability remains above the minimum threshold under all load conditions. Consider thermal dissipation limits based on the SOT-25 package size and ambient operating temperatures.

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 offers various fixed output voltages and package options including W-DFN variants. It utilizes a CMOS process to achieve low power consumption while maintaining robust transient response characteristics essential for modern vehicle electrical architectures.

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

AP7343D-33W5-7: Identical electrical specifications but includes an internal output discharge feature upon shutdown.