AP7343Q-29W5-7

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

The AP7343Q-29W5-7 is a CMOS-based low dropout regulator with an output voltage of 2.9V and a guaranteed output current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features a quiescent current as low as 35µA. The device provides high ripple rejection of 75dB at 1kHz and maintains output voltage accuracy within ±1%. Packaged in SOT-25, it supports an operating temperature range from -40°C to +125°C.

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

• Automotive compliant design qualified to AEC-Q100 standards for reliable operation in demanding environments
• Integrated enable pin allows precise control over power states, supporting shutdown mode to minimize standby consumption
• High power supply rejection ratio ensures stable performance against input line noise and interference
• Low output noise characteristics make the component suitable for sensitive RF and analog circuitry

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 that the specific part number suffix matches the required package type and output voltage configuration. Confirm compliance with automotive quality standards if the application requires PPAP documentation. Ensure the ordering code aligns with the desired packing quantity and reel specifications provided by the manufacturer.

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

Select this component when a fixed 2.9V rail is required for automotive-grade applications. Consider the SOT-25 package for space-constrained PCB layouts. Evaluate thermal dissipation requirements based on the expected load current and ambient temperature conditions to ensure operation within safe junction limits.

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

This device belongs to the AP7343Q series of low dropout regulators manufactured by Diodes Incorporated. The series is designed specifically for automotive electronics, offering high precision and robustness. The Q suffix indicates automotive qualification, distinguishing it from standard commercial variants while maintaining electrical compatibility.

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

AP7343D-29W5-7

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

Does the AP7343Q-29W5-7 include an internal discharge resistor?

No, the AP7343Q variant does not include an auto-discharge feature. To select a version with output discharge, the AP7343DQ series should be considered.

What is the recommended capacitor configuration for stability?

The datasheet recommends using ceramic capacitors with low ESR. A minimum input capacitor of 0.47µF and an output capacitor are required to maintain stability and improve transient response.