AP7347E-10FDCWR-7R

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

The AP7347E-10FDCWR-7R is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a guaranteed output current of 500mA with an output voltage accuracy of ±1%. The device operates within an input voltage range of 1.7V to 5.5V and features a ripple rejection of 75dB at 1kHz. Output noise is specified as 60µVrms from 10Hz to 100kHz, and quiescent current is 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 (PG) open-drain output for supply monitoring and sequencing
• Active output discharge function to ensure known system startup states
• Fold-back short-circuit current limit and thermal shutdown protection
• Low output noise and high ripple rejection suitable for noise-sensitive 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 FDCWR corresponds to the U-DFN2020-6 (SWP) package type required for your design. Confirm that the '7R' packing designation matches your automated assembly equipment specifications. Ensure the fixed 1.0V output voltage aligns with your target load requirements before finalizing procurement.

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

Select this component when a fixed 1.0V rail is needed with high PSRR and low noise characteristics. The U-DFN2020-6 package offers a compact footprint suitable for space-constrained layouts. Consider the 75µA quiescent current for standby power efficiency. Verify that the 500mA continuous output current meets the peak load demands of the downstream circuitry.

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

This part belongs to the AP7347E series, which is designed for high performance in noise-sensitive environments. Unlike the AP7347DQ series, the AP7347E variant specifically integrates a power-good indicator pin. The series supports both fixed and adjustable output voltages across various packages, including U-DFN2020-6 and V-DFN3030-8.

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

AP7347E-10FDCW-7R: Identical electrical specifications but utilizes the standard U-DFN2020-6 (Type UXC) package instead of the R-type variant.

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

What is the function of the PG pin on the AP7347E?

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

How does the AP7347E handle short-circuit conditions?

The device incorporates fold-back short-circuit protection. When the output is shorted to ground, the current limit circuit triggers and clamps the output current to approximately 180mA to protect the regulator from overheating and damage.