AP7347E-17FGECW-13A

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

The AP7347E-17FGECW-13A is a low dropout regulator manufactured by Diodes Incorporated, featuring a fixed 1.7V output voltage and packaged in the V-DFN3030-8/SWP (Type UX) format. It operates within an input voltage range of 1.7V to 5.5V and guarantees a continuous output current of 500mA. The device provides high output accuracy with a tolerance of ±1% and achieves a ripple rejection ratio of 75dB at 1kHz. Its quiescent current is specified as low as 75µA, while the output noise remains at 60µVrms across a frequency band from 10Hz to 100kHz.

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

• Integrated power-good indicator for supply monitoring and sequencing
• Active output discharge capability upon shutdown
• Fold-back short-circuit protection and thermal shutdown mechanisms

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 that the specific part number matches the required package type and output voltage configuration. Confirm compliance with RoHS standards and ensure the ordering suffix aligns with the intended tape and reel packaging quantity. Cross-reference the manufacturer's documentation to validate the exact electrical characteristics before finalizing procurement decisions.

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

Select this component when designing circuits requiring a stable 1.7V rail with minimal noise interference. Ensure the application benefits from the integrated power-good signal for system sequencing. Verify that the thermal dissipation requirements are met through proper PCB layout, utilizing the exposed pad for heat sinking to maintain reliable operation under varying load conditions.

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

This LDO belongs to the AP7347E series, designed for high PSRR and low noise performance. It utilizes a CMOS process and includes features such as an enable pin and internal resistor networks for fixed or adjustable outputs. The device is optimized for noise-sensitive equipment, offering robust line and load transient response capabilities within a compact surface-mount footprint.

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

AP7347E-17FDCW-7R

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 serves as an open-drain output that indicates when the output voltage exceeds its threshold. It can be utilized for supply monitoring and for sequencing other supplies within the circuit.

How does the AP7347E handle short-circuit conditions?

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