AP7347EQ-29FDCW-7R

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

The AP7347EQ-29FDCW-7R is a 500mA automotive-grade low-dropout regulator with a fixed 2.9V output, housed in a U-DFN2020-6 (SWP) package. It operates within a 1.7V to 5.5V input range and delivers ±1% output voltage accuracy across the -40°C to +125°C temperature spectrum. The device features high power supply rejection of 75dB at 1kHz, low output noise of 60µVrms, and an integrated power-good indicator for system monitoring.

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

• AEC-Q100 qualified for automotive reliability requirements
• Integrated power-good open-drain output for supply sequencing
• Active output discharge capability upon shutdown
• Low quiescent current consumption for efficient operation

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 specific suffix '7R' corresponds to the 7-inch tape and reel packaging format as defined in the manufacturer's ordering information. Confirm that the FDCW package code matches the required U-DFN2020-6 footprint for your PCB layout. Ensure the component meets RoHS and halogen-free compliance standards required by your assembly specifications.

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

Select this part when a stable 2.9V rail is needed for noise-sensitive automotive loads. The wide input voltage range accommodates varying battery conditions. Consider the thermal resistance characteristics of the U-DFN2020-6 package for heat dissipation under maximum load conditions. Verify that the external capacitor ESR falls within the stability region specified in the datasheet.

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

This component belongs to the AP7347EQ series of high-PSRR LDOs designed specifically for automotive environments. Unlike standard industrial regulators, it adheres to strict change control protocols and is manufactured in IATF 16949 certified facilities. The series offers both fixed and adjustable output options with integrated protection against overcurrent and thermal overload.

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

AP7347EQ-28FDCW-7R

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

What is the function of the FB/NC pin on the U-DFN2020-6 package?

For the fixed output version like the AP7347EQ-29FDCW-7R, the FB/NC pin is a No Connect internally. It is recommended to connect it to GND on the PCB to maximize copper area for thermal dissipation.

How does the Power-Good (PG) pin indicate status?

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 if VOUT drops below the threshold or the device is disabled.