AP7315DQ-28W5-7

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

The AP7315DQ-28W5-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 2.8V output with ±1% accuracy and supports up to 150mA of guaranteed output current. The device operates within a wide input voltage range of 1.7V to 5.25V and features a quiescent current as low as 35µA. It includes an enable pin for power control and an integrated auto-discharge function. The component is housed in a SOT-25 package, qualified to AEC-Q100 Grade 1 standards, and designed for operation across a temperature range of -40°C to +125°C.

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

• Integrated N-channel auto-discharge function that activates when the enable pin is pulled low.
• High ripple rejection capability providing 75dB at 1kHz frequency.
• Low output noise performance specified at 60µVrms over a 10Hz to 100kHz bandwidth.
• Automotive compliance supporting PPAP documentation and qualification to AEC-Q100 Grade 1.

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

• Infotainment power supplies
• Automotive RF supply circuits
• Camera modules
• Point-of-load regulation in ADAS systems
• Automotive wireless communication equipment

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

Verify the specific ordering suffix matches the required package type and output discharge configuration. Confirm that the automotive compliance designation aligns with project quality requirements. Check manufacturer documentation for any product change notifications or lifecycle status updates before finalizing procurement plans.

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

Select this variant specifically when an internal output discharge mechanism is required for system safety during shutdown states. Ensure the application input voltage remains within the 1.7V to 5.25V operational window. Verify that the thermal dissipation capabilities of the SOT-25 package are sufficient for the expected load conditions and ambient temperatures.

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

This component belongs to the AP7315Q series of low dropout regulators from Diodes Incorporated. The 'D' in the model number indicates the inclusion of an output discharge feature, distinguishing it from the standard AP7315Q non-discharge variants. The '28' specifies the fixed 2.8V output voltage level, while 'W5' denotes the SOT-25 surface mount package.

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

AP7315Q-28W5-7 (Non-discharge version)

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

What is the function of the EN pin on the AP7315DQ-28W5-7?

The EN pin controls the regulator's state. Driving it high enables the output, while pulling it low disables the regulator and activates the internal auto-discharge function to rapidly remove charge from the output capacitor.

How does the AP7315DQ-28W5-7 handle short circuit conditions?

The device incorporates fold-back short circuit protection. When the output is shorted to ground, the current is clamped to approximately 55mA to protect the regulator from overheating and damage.