AP7347E-FGECW-13A

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

The AP7347E-FGECW-13A is a low dropout regulator manufactured by Diodes Incorporated, featuring high output voltage accuracy, low on-resistance, high power supply rejection ratio (PSRR), and low output noise. It operates within an input voltage range of 1.7V to 5.5V and guarantees an output current of 500mA. The device offers fixed output voltages from 1.0V to 5.0V with ±1% accuracy, or adjustable outputs in the same range. Key electrical characteristics include a ripple rejection of 75dB at 1kHz, output noise of 60µVrms from 10Hz to 100kHz, and quiescent current as low as 75µA. It includes a power-good indicator and active output discharge.

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

• Integrated power-good indicator for supply monitoring and sequencing
• Active output discharge capability
• High PSRR and low output noise for noise-sensitive applications
• Fixed and adjustable output voltage options

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

• Desktops
• Notebooks
• Servers
• Gaming consoles
• Camera modules

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

Verify the specific package code FGECW corresponds to the V-DFN3030-8/SWP (Type UX) footprint when reviewing schematic symbols and PCB land patterns. Confirm that the ordering suffix 13A indicates tape and reel packaging compatible with standard surface-mount assembly equipment. Ensure the selected output voltage variant matches the design requirements, as the base part number covers multiple fixed and adjustable configurations.

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

Select this component for designs requiring high precision and low noise regulation within a compact form factor. The V-DFN3030-8 package provides improved thermal dissipation compared to smaller alternatives. Consider the 75µA quiescent current for battery-powered systems where standby power consumption is critical. Verify that the load transient response and stability requirements align with the recommended output capacitor ESR ranges specified in the datasheet.

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

This part belongs to the AP7347E series of low dropout regulators designed for medium-current, noise-sensitive applications. The series utilizes a CMOS process to achieve low power consumption and fast transient response. It is available in U-DFN2020-6 and V-DFN3030-8 packages, catering to different space and thermal constraints while maintaining consistent electrical performance across the family.

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 is within regulation. It goes into a high-impedance state when VOUT exceeds the PG threshold and is pulled low when VOUT drops below the threshold or the device is disabled.

How is the output voltage adjusted?

For adjustable versions, the output voltage is set using an external resistor divider connected between the output, ground, and the FB/NC pin. The internal reference voltage is 0.8V, and R2 should be kept smaller than 80kΩ to maintain stability.