AP7347E-33FDCWR-7R

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

The AP7347E-33FDCWR-7R is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a 3.3V output 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 75dB ripple rejection at 1kHz. It includes a power-good indicator, active output discharge, and thermal shutdown protection. The component is housed in a U-DFN2020-6 (SWP) package.

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

• Integrated power-good open-drain output for supply monitoring and sequencing
• Active output discharge function ensures known system startup states when disabled
• Fold-back short-circuit current limit protects against overcurrent and overheating
• Low noise performance suitable for noise-sensitive equipment applications

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

• Desktops and notebooks
• Servers
• Gaming consoles
• Camera modules
• Medium-current, noise-sensitive applications

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

Verify the specific ordering suffix matches the required package type and tape-and-reel quantity. Confirm that the fixed 3.3V output aligns with the target circuit design requirements. Ensure compatibility with the specified operating temperature range and verify compliance with relevant environmental directives before finalizing procurement specifications.

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

Select this component for designs requiring high output voltage accuracy and low noise characteristics. The integrated power-good pin facilitates system sequencing and fault detection. Consider the thermal resistance values when designing PCB copper planes to ensure reliable operation under maximum load conditions and ambient temperatures.

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

This part belongs to the AP7347E series of low dropout regulators featuring high PSRR and low output noise. The series offers both fixed and adjustable output versions in various packages. The FDCWR suffix specifically denotes the U-DFN2020-6 (SWP) package configuration used in this variant.

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

AP7347E-33FDCW-7R

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

How does the power-good pin function?

The power-good pin is an open-drain output that goes into a high-impedance state when VOUT exceeds the threshold and is pulled 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.