AP7347D-18FDZW-7B

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

The AP7347D-18FDZW-7B is a low-dropout regulator with high output voltage accuracy, low RDS(on), high PSRR, low output noise, and low quiescent current. It is based on a CMOS process and includes a voltage reference, error amplifier, current-limit circuit, and an enable input. The device guarantees an output current of 500mA with ±1% VOUT accuracy. Ripple rejection is 75dB at 1kHz, and output noise is 60µVrms from 10Hz to 100kHz. Quiescent current is as low as 60µA. The fixed output voltage is 1.8V. Input voltage ranges from 1.7V to 5.5V.

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

• Integrated active discharge function for known startup states when disabled
• Foldback short-circuit protection limits output current during faults
• Thermal shutdown protects the device from overheating

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

• Portable and battery-powered equipment
• Desktops, Notebooks, and Ultrabooks
• Tablets and remote controls
• White goods and appliances

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

Verify that the ordering suffix FDZW corresponds to the W-DFN2020-6 (SWP) package type and that the -7B suffix indicates tape and reel packing. Confirm the '18' code specifies the 1.8V fixed output voltage. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing standards.

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

Select this part for applications requiring a 1.8V fixed output with a maximum load current of 500mA. The W-DFN2020-6 package offers a small footprint suitable for dense PCB layouts. Consider the 1.7V to 5.5V input range and the need for an enable pin control signal. Verify thermal dissipation capabilities within the operating temperature range of -40°C to +125°C.

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

This component belongs to the AP7347D series of low-dropout regulators manufactured by Diodes Incorporated. The series is designed for noise-sensitive applications due to its high PSRR and low output noise characteristics. It is available in SOT25 and W-DFN2020-6 packages with various fixed output voltages ranging from 1.0V to 5.0V.

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

AP7347D-18FDZW-7 is the standard version without the B suffix, sharing identical electrical specifications and package dimensions.