AP7347DQ-22FDZW-7

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

The AP7347DQ-22FDZW-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 2.2V with an accuracy of ±1%. The device supports a guaranteed output current of 500mA and operates within an input voltage range of 1.7V to 5.5V. It features a ripple rejection of 75dB at 1kHz and an output noise of 60µVrms from 10Hz to 100kHz. The quiescent current is as low as 60µA. The component is housed in a W-DFN2020-6 (SWP) package.

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

• Automotive compliant with AEC-Q100 qualification and PPAP capability for strict change control requirements.
• Integrated enable pin with active discharge function to ensure known system startup states when disabled.
• Includes thermal shutdown and fold-back short-circuit protection to safeguard against overheating and overcurrent conditions.

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

• Infotainment power supplies
• Automotive RF supplies
• Cameras
• Automotive POL in ADAS
• Automotive wireless communication systems

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

Verify the specific ordering suffix FDZW corresponds to the W-DFN2020-6 wettable flange package type required for your PCB layout. Confirm that the -7 suffix indicates tape and reel packaging containing 3000 units per reel. Ensure the automotive grade designation Q is present to guarantee compliance with IATF 16949 manufacturing standards and PPAP requirements.

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

Select this part when designing for noise-sensitive automotive environments requiring high power density. The W-DFN2020-6 package offers superior thermal dissipation compared to smaller alternatives. Verify that the 2.2V fixed output aligns with load requirements, as adjustable versions are not available in this series. Consider the 60µA quiescent current impact on standby power consumption.

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

This component belongs to the AP7347DQ family of automotive-compliant LDO regulators. The family includes various fixed output voltages ranging from 1.0V to 5.0V. Other package options include SOT25. All variants share common electrical characteristics such as 500mA output current and 75dB PSRR, differing primarily in physical footprint and specific output voltage settings.

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

Direct substitutes within the same family include AP7347DQ-22W5-7 for the SOT25 package or other voltage variants like AP7347DQ-28FDZW-7 if the output voltage requirement changes. Cross-brand replacements require matching the 500mA current rating, 1.7V-5.5V input range, and W-DFN2020-6 footprint.

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

What is the function of the EN pin?

The EN pin enables or disables the regulator. Driving it high turns the device on, while pulling it low activates shutdown mode with an internal active discharge to ensure a known state.

How does the device handle short circuits?

The AP7347DQ-22FDZW-7 incorporates fold-back short-circuit protection. When VOUT is shorted to GND, the output current is clamped to approximately 180mA to prevent damage.