AP7347E-12FGECW-13A

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

The AP7347E-12FGECW-13A is a fixed-output low dropout regulator manufactured by Diodes Incorporated, delivering a precise 1.2V output with ±1% accuracy. It supports up to 500mA of guaranteed output current within an input voltage range of 1.7V to 5.5V. The device features high power supply rejection of 75dB at 1kHz and ultra-low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is maintained at a maximum of 75µA. It includes a power-good indicator, active output discharge, and thermal shutdown protection, housed in a V-DFN3030-8/SWP package.

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

• Integrated power-good (PG) open-drain output for supply monitoring and sequencing
• High ripple rejection ratio of 75dB at 1kHz combined with low output noise
• Active output discharge function ensures known system startup states when disabled
• Built-in thermal shutdown and fold-back short-circuit current protection

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

• Noise-sensitive equipment requiring stable power rails
• Servers and desktop computing systems
• Gaming consoles
• Camera modules

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

Verify the specific ordering suffix FGECW-13A corresponds to the V-DFN3030-8/SWP package and 13-inch tape & reel packing configuration. Confirm that the fixed 1.2V output variant matches the design requirements. Ensure compatibility with RoHS 3 and halogen-free standards if required by the target market regulations.

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

Select this component for applications demanding high PSRR and low noise performance alongside moderate current capabilities. The inclusion of the power-good pin makes it suitable for complex power sequencing architectures. Verify that the input voltage remains within the 1.7V to 5.5V range and that the load does not exceed the 500mA limit under worst-case thermal conditions.

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

This part belongs to the AP7347E series of 500mA high PSRR low noise LDOs. Unlike the AP7347DQ which lacks the power-good feature, the AP7347E integrates a PG pin for system supervision. It is available in U-DFN2020-6 and V-DFN3030-8 packages, offering flexibility for different PCB space constraints while maintaining similar electrical characteristics.

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

AP7347E-12FDCW-7R provides the same 1.2V output but utilizes the smaller U-DFN2020-6 package instead of the V-DFN3030-8.

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

How is the Power-Good (PG) pin configured?

The PG pin is an open-drain output. It requires an external pull-up resistor ranging from 10kΩ to 1MΩ connected to a supply voltage.

What happens during a short-circuit condition?

Short-circuit protection triggers and clamps the output current to approximately 180mA to prevent damage from overheating.