AP7347EQ-10FDCW-7R

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

The AP7347EQ-10FDCW-7R is a low dropout regulator manufactured by Diodes Incorporated, featuring high output voltage accuracy and low noise. It operates within an input voltage range of 1.7V to 5.5V and guarantees an output current of 500mA. The device provides a fixed 1.0V output with ±1% accuracy. Key electrical parameters include a ripple rejection of 75dB at 1kHz, an output noise of 60µVrms from 10Hz to 100kHz, and a quiescent current as low as 75µA. It incorporates a power-good indicator and active output discharge.

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

• Integrated power-good (PG) open-drain output for supply monitoring and sequencing
• Active output discharge function to ensure known system startup states when disabled
• Fold-back short-circuit current limit and thermal shutdown protection
• Low dropout performance with guaranteed 500mA output current capability

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

• Noise-sensitive equipment requiring stable power rails
• Desktops and notebooks
• Servers
• Gaming consoles
• Camera modules

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

Verify the specific ordering suffix '7R' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the FDCW package code matches the U-DFN2020-6 footprint on the target PCB layout. Ensure the fixed 1.0V output specification aligns with the downstream circuit requirements before finalizing procurement orders.

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

Select this component for applications demanding low noise and high PSRR in compact form factors. The inclusion of the power-good pin makes it suitable for systems requiring precise supply sequencing or status monitoring. Consider the thermal resistance characteristics of the U-DFN2020-6 package when designing for high ambient temperatures or continuous full-load operation.

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

This part belongs to the AP7347E series of 500mA high PSRR low noise LDO regulators. The series offers both fixed and adjustable output voltage options across various packages including U-DFN2020-6 and V-DFN3030-8. It is designed based on a CMOS process to achieve low power consumption and fast transient response.

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

AP7347E-FDCW-7R

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

What is the function of the PG pin?

The Power-Good (PG) pin is an open-drain output that indicates when the output voltage exceeds the power-good threshold. It goes into a high-impedance state when VOUT is above the threshold and is pulled low when VOUT drops below the threshold or the device is disabled.

How does the device handle short circuits?

The AP7347E includes short-circuit protection that triggers when the output is shorted to ground, clamping the output current to approximately 180mA via a fold-back current limit mechanism to prevent damage.