AP7347DQ-33FDZW-7

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

The AP7347DQ-33FDZW-7 is a fixed-output automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.3V with ±1% accuracy and supports up to 500mA load current. The device operates within an input voltage range of 1.7V to 5.5V and features a typical ripple rejection ratio of 75dB at 1kHz. It incorporates an enable pin, active discharge function, and thermal shutdown protection. The component is housed in a W-DFN2020-6 (SWP) package and is qualified under AEC-Q100 standards for automotive applications.

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

• AEC-Q100 qualified for automotive environments with PPAP capability
• Integrated enable control with built-in active discharge for safe shutdown
• High power density W-DFN2020-6 wettable flanks package
• Low noise performance suitable for sensitive RF subsystems

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

• Automotive infotainment power supplies
• Point-of-load regulation in ADAS systems
• Automotive wireless communication modules
• Camera system power management

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

Verify the specific suffix FDZW confirms the W-DFN2020-6 wettable flanks package type. Confirm the 'Q' designation indicates compliance with automotive change control requirements. Ensure the ordering code matches the required 33V fixed output variant. Validate that the manufacturer source aligns with Diodes Incorporated official documentation.

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

Select this part when a compact footprint is required for high-density PCB layouts in automotive designs. The W-DFN2020-6 package offers superior thermal dissipation compared to standard SOT25 options. Verify that the application requires a fixed 3.3V rail rather than an adjustable configuration. Consider the 75dB PSRR requirement for noise-sensitive downstream components.

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

This component belongs to the AP7347DQ series of low dropout regulators designed specifically for demanding automotive electronics. The series utilizes a CMOS process to achieve low quiescent current and high output precision. It is engineered to meet strict automotive reliability standards while maintaining small physical dimensions for space-constrained vehicle architectures.

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

Direct substitutes include other AP7347DQ variants with different output voltages or packages, such as AP7347DQ-XXW5-7 for SOT25 packaging. Cross-brand replacements require matching the 500mA current rating, 3.3V output, and AEC-Q100 qualification status.