AP7343Q-11W5-7

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

The AP7343Q-11W5-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed output voltage of 1.1 V with a maximum output current of 300 mA. The device operates within an input voltage range of 1.7 V to 5.25 V and maintains a quiescent current of 35 µA. It features high power supply rejection ratio of 75 dB at 1 kHz and low output noise of 60 µVrms from 10 Hz to 100 kHz. The component is qualified to AEC-Q100 Grade 1 standards, ensuring suitability for demanding automotive environments.

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

• Automotive compliant design supporting PPAP documentation and IATF 16949 certified manufacturing
• Integrated enable pin allows precise control over regulator shutdown and operation states
• High ripple rejection capability minimizes power supply noise in sensitive circuits
• Low output noise performance ensures clean power delivery for RF and data applications

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

• Infotainment power supplies
• Automotive RF supplies
• Camera modules
• Automotive point-of-load (POL) in ADAS systems
• Automotive wireless communications

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

Verify the specific suffix W5 indicates the SOT25 package configuration. Confirm that the Q suffix denotes AEC-Q100 Grade 1 qualification required for your automotive application. Ensure the ordering code matches the exact 1.1 V output variant. Check for any specific change control requirements mandated by your OEM specifications before finalizing procurement.

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

Select this component when a fixed 1.1 V rail is required for automotive-grade noise-sensitive loads. The SOT25 package offers a compact footprint suitable for dense PCB layouts. Consider the 300 mA current limit against peak load demands. Verify input voltage stability remains above the minimum threshold during all operating conditions to maintain regulation.

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

This part belongs to the AP7343Q family of low dropout regulators designed specifically for automotive electronics. The series includes various fixed output voltages ranging from 0.9 V to 3.6 V. All variants share common electrical characteristics including high PSRR and low quiescent current. The family supports both standard and discharge-enabled versions for different system power management needs.

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

AP7343DQ-11W5-7 serves as a functional substitute with integrated output discharge capabilities. Standard AP7343-11W5-7 lacks the automotive compliance and AEC-Q100 qualification. Verify package compatibility and thermal dissipation requirements when substituting between non-discharge and discharge-enabled variants.