AP7315Q-12W5-7

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

The AP7315Q-12W5-7 is an automotive-compliant low dropout regulator manufactured by Diodes Incorporated. It provides a fixed 1.2V output with a maximum current of 150mA. 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 characteristics include ±1% output voltage accuracy, 75dB ripple rejection at 1kHz, and 60µVrms output noise. Quiescent current is typically 35µA. It utilizes a SOT-25-5 package.

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

• Automotive compliant with AEC-Q100 Grade 1 qualification and PPAP capability for specific change control requirements.
• Features high power supply rejection ratio (PSRR) and low output noise suitable for sensitive RF applications.
• Includes an enable pin for shutdown mode control and integrated short-circuit protection.

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

• Infotainment power supplies
• Automotive RF supply
• Cameras
• Automotive POL in ADAS
• Automotive wireless communication

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

Verify the part number suffix W5 corresponds to the SOT-25 package and -7 indicates tape and reel packaging. Confirm that the Q suffix denotes Automotive Compliance, which requires PPAP documentation. Ensure the component meets RoHS 3 standards and is halogen-free. Cross-reference the manufacturer's ordering information to validate availability and compliance certificates before finalizing procurement.

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

Select this component when designing for noise-sensitive automotive environments requiring stable 1.2V rails. The wide input voltage range accommodates various battery architectures. Consider the low quiescent current for battery-operated systems. Verify that the required load current does not exceed 150mA and that the PCB layout allows for adequate thermal dissipation given the SOT-25 package constraints.

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

This part belongs to the AP7315Q family of low dropout regulators designed specifically for automotive applications. Unlike commercial variants, these parts are qualified to AEC-Q100 Grade 1 standards and manufactured in IATF 16949 certified facilities. The series offers multiple fixed output voltages ranging from 1.1V to 3.3V, all sharing similar electrical performance profiles regarding noise and line regulation.

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

AP7315DQ-12W5-7: Identical electrical specifications but includes an internal output discharge function for faster shutdown.

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

Does the AP7315Q-12W5-7 have an internal output discharge feature?

No, the AP7315Q variant does not include an internal output discharge function. To obtain this feature, select the AP7315DQ-12W5-7 model instead.

What is the recommended minimum output capacitor for stability?

The datasheet recommends using ceramic capacitors with low ESR. While specific values depend on load conditions, the application notes suggest placing capacitors close to the device to ensure stability and transient response.