AP7347E-FDCW-7R

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

The AP7347E-FDCW-7R is a low dropout regulator manufactured by Diodes Incorporated, packaged in U-DFN2020-6 (SWP) with package code FDCW. It operates within an input voltage range of 1.7V to 5.5V and guarantees an output current of 500mA. The device features high output voltage accuracy of ±1%, ripple rejection of 75dB at 1kHz, and low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is as low as 75µA, and it includes a power-good indicator for supply monitoring.

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

• Integrated power-good indicator for supply monitoring and sequencing
• Active output discharge capability
• Low output noise and high PSRR for noise-sensitive applications
• Built-in current limit and thermal shutdown protection

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 ordering suffix '7R' corresponds to tape and reel packaging containing 3000 units per carrier. Confirm that the FDCW package code matches the required U-DFN2020-6 footprint on your PCB layout. Ensure the selected fixed output voltage or adjustable configuration aligns with your system requirements before finalizing procurement.

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

Select this component when designing systems requiring high accuracy and low noise regulation. The wide input voltage range supports various battery and rail configurations. Consider the U-DFN2020-6 package size for space-constrained designs. Verify thermal dissipation capabilities based on the expected junction-to-ambient resistance and maximum ambient temperature conditions.

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

This part belongs to the AP7347E series of LDO regulators designed for CMOS processes. It offers both fixed and adjustable output voltage options ranging from 1.0V to 5.0V. The series is engineered for medium-current, noise-sensitive applications, providing robust performance across a wide operating temperature range.

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

Consult the manufacturer's documentation for direct substitutes. Cross-referencing requires matching the U-DFN2020-6 package, 500mA output current, and similar electrical characteristics such as dropout voltage and quiescent current.

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 is the output voltage adjusted?

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