AP7347E-28FDCWR-7R

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

The AP7347E-28FDCWR-7R is a fixed-output low dropout regulator manufactured by Diodes Incorporated, delivering a precise 2.8V output at up to 500mA. It operates within an input voltage range of 1.7V to 5.5V and maintains ±1% output accuracy across the -40°C to +125°C temperature range. The device features a 75dB ripple rejection ratio at 1kHz and a low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is limited to 75µA, and it includes a power-good indicator, active output discharge, and thermal shutdown protection.

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 with low output noise of 60µVrms
• Active output discharge function ensures known system startup states when disabled
• Includes fold-back short-circuit current limiting and thermal shutdown protection

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

• Noise-sensitive equipment requiring stable power rails
• Desktops and notebooks
• Servers and gaming consoles
• Camera modules

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

Verify that the ordering suffix FDCWR corresponds to the U-DFN2020-6 (SWP) Type UXC package variant. Confirm the '7R' packing designation matches the required tape and reel quantity. Ensure the specific 28 output voltage code aligns with the design requirements before finalizing procurement orders.

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

Select this component for applications requiring high PSRR and low noise in compact form factors. The U-DFN2020-6 package offers a high-power density solution suitable for space-constrained designs. Verify that the 2.8V fixed output meets the load requirements without needing external resistor dividers used in adjustable versions.

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

This part belongs to the AP7347E series, which provides 500mA LDO regulation with integrated power-good indicators. Unlike the AP7347DQ series, the AP7347E explicitly includes the PG pin functionality. The device utilizes CMOS technology to achieve low quiescent current while maintaining high output accuracy and transient response capabilities.

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

AP7347E-28FDCW-7R: Identical electrical specifications but utilizes the standard U-DFN2020-6 (SWP) Type UXC package instead of the R variant.