AP7343Q-28FDZW-7

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

The AP7343Q-28FDZW-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed output voltage of 2.8V with a guaranteed maximum output current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and supports an ambient temperature range from -40°C to +125°C. It features high ripple rejection of 75dB at 1kHz, low output noise of 60µVrms, and a quiescent current as low as 35µA. The component is housed in a W-DFN2020-6 (SWP) Type A1 package.

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

• Automotive compliant design qualified to AEC-Q100 standards for use in specific change control applications
• High power supply ripple rejection capability combined with low output noise for sensitive circuits
• Integrated enable pin allows for precise on/off control and shutdown mode operation
• Built-in thermal shutdown and foldback short-circuit protection mechanisms

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

• Infotainment power supplies
• Automotive RF supplies
• Cameras
• Automotive POL in ADAS
• Automotive wireless communications

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

Verify the part number suffix FDZW corresponds to the W-DFN2020-6 (SWP) Type A1 package configuration. Confirm that the Q suffix indicates automotive compliance and PPAP capability. Ensure the ordering code matches the required 2.8V fixed output variant. Check datasheet specifications for thermal resistance values relevant to your PCB layout constraints before finalizing procurement.

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

Select this component when designing for noise-sensitive automotive environments requiring a compact footprint. The W-DFN2020-6 package facilitates dense PCB layouts while maintaining thermal performance through the exposed pad. Consider the 2.8V fixed output specifically for subsystems requiring this precise rail without external resistor networks. Verify input voltage stability within the 1.7V to 5.25V range for your specific battery or bus architecture.

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

This device belongs to the AP7343Q series of low dropout regulators designed for automotive applications. It utilizes a CMOS process to achieve low power consumption and high accuracy. The series includes various fixed output voltages and package options, including SOT25 and different W-DFN2020-6 variants, allowing designers to choose the optimal form factor for their specific space and thermal requirements.

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

AP7343DQ-28FDZW-7 serves as a functional substitute with identical electrical characteristics but includes an internal auto-discharge feature for faster output voltage decay upon shutdown.