AP7343Q-28W5-7

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

The AP7343Q-28W5-7 is an automotive-compliant, fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 2.8V output with a guaranteed maximum load current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio performance of 75dB at 1kHz. Designed for noise-sensitive environments, it exhibits low output noise of 60µVrms across the 10Hz to 100kHz bandwidth. The component supports an extended operating ambient temperature range from -40°C to +125°C and utilizes a compact SOT-25 surface-mount package.

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

• Automotive-grade qualification compliant with AEC-Q100 standards and PPAP capability for use in IATF 16949 certified facilities
• Integrated enable pin allows precise control over regulator activation and shutdown states
• Built-in protection mechanisms include thermal shutdown and foldback short-circuit current limiting
• CMOS process technology ensures low quiescent current consumption and minimal footprint requirements

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

• Infotainment power supplies
• Automotive RF supplies
• Camera modules
• Point-of-load regulation in ADAS systems
• Automotive wireless communications

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

Verify that the specific part number suffix matches the required package type and output voltage configuration. Confirm compliance with RoHS directives and halogen-free specifications if mandated by project requirements. Ensure the ordering quantity aligns with standard tape and reel packaging constraints provided by the manufacturer. Cross-reference the datasheet revision to confirm electrical characteristics match design specifications.

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

Select this component when designing circuits requiring strict automotive reliability standards and high noise immunity. The fixed 2.8V output eliminates the need for external feedback resistors, simplifying PCB layout. Consider the low dropout characteristic for applications where the input voltage margin is limited. Verify that the thermal dissipation capabilities of the SOT-25 package are sufficient for the expected load current and ambient temperature conditions.

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

This device belongs to the AP7343Q series of low dropout regulators designed specifically for automotive electronics. The series offers various fixed output voltages ranging from 0.9V to 3.6V to accommodate different system rail requirements. All variants share common electrical characteristics including high PSRR and low noise profiles, ensuring consistent performance across the product line for sensitive analog and digital loads.

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

The AP7343DQ-28W5-7 serves as a functional substitute within the same family, differing primarily by the inclusion of an internal output discharge resistor. Standard non-automotive versions such as the AP7343-28W5-7 lack AEC-Q100 qualification and may not meet automotive supply chain documentation requirements.