AP7347DQ-115FDZW-7

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

The AP7347DQ-115FDZW-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.
• Integrates thermal shutdown and short-circuit protection with fold-back current limiting.

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 ordering suffix FDZW corresponds to the W-DFN2020-6 (SWP) package type as documented in the manufacturer's ordering information table. Confirm that the '115' designation accurately reflects the required 1.15V fixed output voltage before finalizing procurement orders. Ensure compliance with automotive change control requirements if applicable to the end-use environment.

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

Select this component for designs requiring a fixed 1.15V output within a 1.7V to 5.5V input range. It is suitable for noise-sensitive applications due to its low output noise and high ripple rejection capabilities. Consider the W-DFN2020-6 package for dense PCB layouts and improved thermal dissipation compared to alternative form factors.

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

This part belongs to the AP7347DQ series of automotive-compliant LDOs from Diodes Incorporated. The series offers various fixed output voltages ranging from 1.0V to 5.0V. The device is designed for high-power density applications, providing up to 500mA of guaranteed output current while maintaining strict voltage accuracy across the specified operating temperature range.

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

Direct substitutes include other AP7347DQ variants with different output voltages or packages, such as AP7347DQ-12FDZW-7 for 1.2V output. Cross-family replacements require matching electrical specifications and pinout compatibility. Verify that any alternative meets AEC-Q100 qualification if automotive compliance is mandatory.

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

What is the function of the EN pin?

The EN pin enables the regulator when driven high and puts it into shutdown mode when pulled low. It must not be left floating during operation.

How does the device handle short circuits?

Short-circuit protection triggers when VOUT shorts to GND, clamping the output current to approximately 55mA to protect the regulator from damage.

What packaging options are available for this series?

The AP7347DQ series is available in SOT25 (Type A1) and W-DFN2020-6 (wettable) packages, both supporting tape and reel delivery.