AP7347EQ-33FGECW-13A

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

The AP7347EQ-33FGECW-13A is a fixed-output low-dropout regulator manufactured by Diodes Incorporated, providing a stable 3.3V output with ±1% accuracy. It operates within an input voltage range of 1.7V to 5.5V and guarantees a continuous output current of 500mA. The device features a ripple rejection ratio of 75dB at 1kHz and maintains a low output noise of 60µVrms across the 10Hz to 100kHz bandwidth. Quiescent current is specified as low as 75µA. It includes integrated power-good monitoring, active output discharge, and thermal shutdown protection, housed in a V-DFN3030-8/SWP package.

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

• Integrated power-good indicator for supply sequencing and monitoring
• High ripple rejection ratio suitable for noise-sensitive automotive applications
• Active output discharge ensures known system startup states when disabled
• Automotive-grade qualification with PPAP capability

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 that the specific part number matches the required V-DFN3030-8/SWP (Type UX) package configuration. Confirm the fixed 3.3V output voltage aligns with circuit requirements. Ensure compliance with AEC-Q100 standards if deploying in automotive environments requiring specific change control protocols.

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

Select this component for designs requiring high PSRR and low noise in compact automotive layouts. The V-DFN3030-8 package offers improved thermal dissipation compared to smaller alternatives. Verify that the load transient response and stability requirements are met using recommended ceramic capacitors with appropriate ESR characteristics.

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

This component belongs to the AP7347EQ series of low-dropout regulators designed for demanding automotive environments. It is manufactured in IATF 16949 certified facilities and supports production part approval processes. The series provides options for both fixed and adjustable output voltages within the 1.0V to 5.0V range.

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

AP7347DQ-33FGECW-13A

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

How does the Power-Good pin function?

The PG pin is an open-drain output that goes into a high-impedance state when VOUT exceeds the threshold and pulls low when VOUT drops below the threshold or the device is disabled.

What happens during a short-circuit condition?

Short-circuit protection triggers and clamps the output current to approximately 180mA to prevent damage from overheating.