AP7343DQ-25FDZW-7

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

The AP7343DQ-25FDZW-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 2.5V output with a guaranteed maximum 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. Key electrical characteristics include a quiescent current of 35µA, ripple rejection of 75dB at 1kHz, and output noise of 60µVrms. It features integrated short-circuit protection, thermal shutdown, and an enable pin for power control.

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

• Automotive compliant with AEC-Q100 qualification and PPAP capability
• Integrated N-channel auto-discharge resistor for rapid output voltage decay
• High power supply ripple rejection and low output noise performance
• Compact W-DFN2020-6 (SWP) Type A1 package for dense PCB layouts

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 specific suffix FDZW corresponds to the W-DFN2020-6 (SWP) Type A1 package configuration. Confirm that the DQ designation indicates the inclusion of the internal auto-discharge feature, which affects shutdown behavior compared to non-discharge variants. Ensure compatibility with automotive quality standards requiring PPAP documentation if applicable to the end-use environment.

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

Select this component when a fixed 2.5V rail is required for sensitive automotive electronics. The built-in discharge function distinguishes it from standard AP7343Q versions, making it suitable where rapid output voltage collapse is necessary upon disable. The W-DFN2020-6 package offers superior thermal dissipation compared to SOT25 options while maintaining a small footprint.

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

This part belongs to the AP7343Q family of high PSRR LDOs designed for automotive environments. It shares core electrical specifications with other members but is uniquely identified by its 2.5V fixed output, auto-discharge capability, and W-DFN2020-6 (SWP) Type A1 packaging format.

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

AP7343DQ-25W5-7: Identical electrical and discharge features but utilizes SOT25 packaging instead of W-DFN2020-6.