AP7347EQ-29FDCWR-7R

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

The AP7347EQ-29FDCWR-7R is a low-dropout regulator with high output-voltage accuracy, low RDS(ON), high PSRR, low output noise, and low quiescent current. It operates within an input voltage range of 1.7V to 5.5V and guarantees an output current of 500mA. The fixed output voltage is 2.9V with ±1% accuracy. Ripple rejection is 75dB at 1kHz, and output noise is 60µVrms from 10Hz to 100kHz. Quiescent current is as low as 75µA. It features a power-good indicator and active output discharge.

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

• Includes a power-good (PG) open-drain output for supply monitoring and sequencing of other supplies.
• Features active output discharge to ensure the system starts in a known state when disabled.
• Integrated thermal shutdown and foldback short-circuit protection to prevent damage during overcurrent conditions.

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

• Infotainment power supplies
• Automotive RF supplies
• Cameras
• Automotive POL in ADAS
• Automotive wireless communication systems

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

Verify the package code FDCWR corresponds to the U-DFN2020-6 (SWP) (Type UXC) form factor required for your PCB layout. Confirm that the 2.9V fixed output voltage meets your specific circuit design needs. Ensure the ordering suffix -7R matches your tape and reel quantity requirements. Check for AEC-Q100 qualification if automotive compliance is mandatory for your project specifications.

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

Select this component for noise-sensitive automotive applications requiring a 2.9V rail. The U-DFN2020-6 package offers a high-power density footprint suitable for space-constrained designs. Consider the 75µA quiescent current for standby power efficiency. Verify that the 500mA output current capability aligns with your maximum load requirements under all operating temperature conditions.

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

This part belongs to the AP7347EQ series of 500mA LDOs designed for automotive environments. It is manufactured in IATF 16949 certified facilities and supports PPAP. The series provides various fixed output voltages and adjustable options in U-DFN2020-6 and V-DFN3030-8 packages, targeting ADAS and infotainment subsystems.

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

AP7347EQ-29FDCW-7R shares the same electrical characteristics but uses the non-reel variant of the U-DFN2020-6 package.

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

What is the function of the FB/NC pin on the AP7347EQ-29FDCWR-7R?

For the fixed 2.9V version, the FB/NC pin is a No Connect. It is not connected internally but should be connected to GND on the PCB to maximize copper area for thermal dissipation.

How does the Power-Good (PG) pin operate?

The PG pin is an open-drain output. It goes into a high-impedance state when VOUT exceeds the PG threshold and is pulled low by an internal MOSFET when VOUT drops below the threshold or the device is disabled.