AP7343Q-15W5-7

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

The AP7343Q-15W5-7 is an automotive-compliant, fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 1.5V output with ±1% accuracy and supports up to 300mA of load current. The device operates within a wide input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz alongside low output noise of 60µVrms. Designed for noise-sensitive environments, it includes integrated thermal shutdown and short-circuit protection. The component is housed in a compact SOT-25 package and functions reliably across an extended temperature range from -40°C to +125°C.

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

• Automotive-grade qualification compliant with AEC-Q100 standards and PPAP capable
• High ripple rejection and ultra-low output noise suitable for sensitive RF and camera circuits
• Integrated enable pin allows precise control over regulator operation and shutdown states
• Built-in protections include thermal shutdown and foldback current limiting

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 the specific suffix W5 confirms the SOT-25 package configuration required for your PCB layout. Ensure the Q designation matches your automotive compliance requirements. Confirm that the non-discharge variant aligns with your system's power-down state expectations. Cross-reference the manufacturer part number against official distributor catalogs to ensure authenticity and correct revision levels before finalizing orders.

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

Select this component when designing for automotive applications requiring strict noise immunity and high voltage accuracy. The 1.5V fixed output is ideal for powering digital logic or sensors needing precise rails. Consider the SOT-25 package for space-constrained designs where thermal dissipation needs are moderate. Verify that the input voltage remains within the specified 1.7V to 5.25V window to maintain optimal line regulation and stability under all operating conditions.

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

This device belongs to the AP7343Q family of low dropout regulators designed specifically for automotive electronics. The series offers various fixed output voltages ranging from 0.9V to 3.6V while maintaining consistent electrical characteristics. The AP7343Q-15W5-7 represents the 1.5V variant packaged in SOT-25, providing a balance of performance and footprint efficiency for dense board layouts in modern vehicle electronic control units.

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

Direct substitutes within the same family include AP7343Q-18W5-7 for 1.8V output or AP7343Q-12W5-7 for 1.2V output, assuming identical package and automotive grade requirements are met. For standard commercial grade alternatives without automotive certification, consider the AP7343-15W5-7 model.