AP7347DQ-17FDZW-7

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

The AP7347DQ-17FDZW-7 is a low dropout regulator with high output voltage accuracy, low R DS(on), high PSRR, low output noise, and low quiescent current. This regulator is based on a CMOS process. The AP7347DQ includes a voltage reference, error amplifier, current limit circuit, and an enable input to turn it on and off. With its low power consumption and line and load transient response, the AP7347DQ is well-suited for noise sensitive automotive equipment.

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

• AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.
• Integrated resistor network provides fixed output voltage versions.
• Built-in active discharge function ensures known state upon system startup when disabled.
• Thermal shutdown and short-circuit protection features are integrated.

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 that the component matches the specific package type W-DFN2020-6 (SWP) and the fixed output voltage of 1.7V. Confirm compliance with automotive standards including AEC-Q100 qualification and PPAP capability if required for your application. Ensure the ordering suffix corresponds to the correct tape and reel packaging quantity.

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

Select this part for applications requiring a fixed 1.7V output from a wide input voltage range. It is suitable for noise-sensitive environments due to its high PSRR and low output noise characteristics. Consider the thermal performance and PCB layout requirements associated with the W-DFN2020-6 package for optimal heat dissipation.

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

The AP7347DQ series consists of low dropout regulators designed for automotive applications. The AP7347DQ-17FDZW-7 variant specifically offers a fixed 1.7V output in a W-DFN2020-6 package. It is part of a family providing various fixed output voltages, all sharing similar electrical characteristics and automotive qualifications.

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

Other variants within the AP7347DQ series can be considered if different fixed output voltages are needed, such as AP7347DQ-18FDZW-7 for 1.8V or AP7347DQ-15FDZW-7 for 1.5V. Ensure the replacement maintains the same package type and automotive compliance requirements.

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

What is the purpose of the EN pin?

The EN pin is used to turn the regulator on and off. Driving it high enables the regulator, while pulling it low puts it into shutdown mode. It must not be left floating.

How does the device handle short circuits?

When the VOUT pin is shorted to GND, short-circuit protection triggers and clamps the output current to approximately 55mA, protecting the regulator from damage.