AP7347EQ-50FDCW-7R

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

The AP7347EQ-50FDCW-7R is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a 5.0V output with ±1% accuracy and supports up to 500mA of guaranteed output current. The device operates within an input voltage range of 1.7V to 5.5V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz, alongside low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is specified as low as 75µA. It includes a power-good indicator and active output discharge, packaged in the U-DFN2020-6 (SWP) format.

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

• Integrated power-good indicator for supply monitoring and sequencing
• Active output discharge capability for rapid shutdown
• High ripple rejection performance suitable for noise-sensitive applications
• Low quiescent current consumption for efficient power management

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 that the specific suffix 'EQ' aligns with the manufacturer's standard ordering nomenclature for the AP7347E series. Confirm the package code FDCW corresponds to the U-DFN2020-6 (SWP) Type UXC footprint. Ensure the '7R' packing designation matches the required tape and reel quantity specifications for production integration.

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

Select this component when a stable 5.0V rail is required with strict noise constraints. The high PSRR and low output noise make it appropriate for sensitive analog or RF sections. Verify that the input voltage remains within the 1.7V to 5.5V range and that the thermal design accommodates the junction-to-ambient resistance for the U-DFN2020-6 package under maximum load conditions.

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

This part belongs to the AP7347E family of low dropout regulators designed for high performance and low noise. The series offers both fixed and adjustable output versions across various packages including U-DFN2020-6 and V-DFN3030-8. The AP7347E integrates essential protection features such as current limit and thermal shutdown, targeting portable and industrial electronics requiring reliable power management.

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

AP7347E-50FDCW-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 if VOUT drops below the threshold or the device is disabled.

How is the output voltage set for this fixed version?

For the fixed output version, the output voltage is internally set via an integrated resistor network. No external resistors are required to define the voltage level, unlike the adjustable variant which uses an external divider.