AP7347E-18FGECW-13A

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

The AP7347E-18FGECW-13A is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides an 1.8V output with a guaranteed current of 500mA and ±1% accuracy. The device operates within a 1.7V to 5.5V input range, featuring 75dB ripple rejection at 1kHz and 60µVrms output noise from 10Hz to 100kHz. Quiescent current is 75µA. It includes power-good indication, active output discharge, and thermal/short-circuit protection in a V-DFN3030-8/SWP package.

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

• Integrated power-good indicator for supply monitoring and sequencing
• Active output discharge ensures known system startup state when disabled
• Fold-back short-circuit current limit protects against overcurrent conditions
• Thermal shutdown prevents damage during overheating events

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 matches the required package type and tape-and-reel specifications. Confirm that the fixed 1.8V output voltage aligns with the target circuit design requirements. Ensure compliance with RoHS and halogen-free standards if mandated by project specifications. Cross-reference the manufacturer's datasheet revision to confirm pinout and electrical characteristics match the intended implementation.

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

Select this component for designs requiring high power-supply rejection ratio and low output noise in compact form factors. The V-DFN3030-8/SWP package offers improved thermal dissipation compared to smaller alternatives. Consider the integrated power-good feature if downstream logic requires status monitoring. Verify input voltage headroom accommodates the specified dropout voltage under maximum load conditions.

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

This part belongs to the AP7347E series of 500mA LDO regulators designed for noise-sensitive equipment. Unlike the AP7347DQ which lacks the power-good indicator, the AP7347E integrates this feature for advanced system control. The FGECW suffix denotes the V-DFN3030-8/SWP package variant, providing enhanced thermal performance suitable for higher power density applications.

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

AP7347E-18FDCW-7R (Same electrical specs, U-DFN2020-6 package)

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

How does the power-good pin function?

The PG pin is an open-drain output that goes high-impedance when VOUT exceeds the threshold and pulls low when VOUT drops below the threshold or the device is disabled.

What is the purpose of the active output discharge?

When the enable pin is pulled low, the internal MOSFET discharges the output capacitor to ensure the system starts up in a known state.