AP7343Q-09W5-7

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

The AP7343Q-09W5-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed output voltage of 0.9V with a guaranteed maximum output current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and supports junction temperatures from -40°C to +125°C. Key electrical specifications include a quiescent current of 35µA, ripple rejection of 75dB at 1kHz, and output noise of 60µVrms. It features ±1% output voltage accuracy and includes integrated enable control, thermal shutdown, and short-circuit protection.

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

• Automotive compliant design qualified to AEC-Q100 standards for use in noise-sensitive vehicle applications
• Integrated enable pin allows precise power management and system-level shutdown control
• High power supply ripple rejection ensures stable operation under noisy input conditions
• Low output noise characteristics suitable for sensitive RF and analog circuitry

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

• Infotainment power supplies
• Automotive RF supplies
• Camera modules
• Automotive POL in ADAS
• Automotive wireless communications

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

Verify the specific suffix W5 corresponds to the SOT25 package required for your PCB layout. Confirm that the non-discharge variant meets your power-down requirements, as discharge versions exist within the same family. Ensure the ordering code matches the exact 0.9V output specification needed for your design.

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

Select this component when designing for automotive environments requiring high reliability and strict noise limits. The wide input voltage range accommodates various battery architectures. Consider the SOT25 footprint constraints and verify that the thermal dissipation capabilities align with your expected load currents and ambient temperature conditions.

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

This part belongs to the AP7343Q series of low dropout regulators designed specifically for automotive compliance. It utilizes a CMOS process to achieve low power consumption while maintaining high performance. The series offers multiple fixed output voltages and packaging options to support diverse system integration needs in modern electronic vehicles.

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

AP7343DQ-09W5-7 serves as a functional substitute with identical electrical characteristics but includes an internal output discharge feature.