AP7370-36SA-7

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

The AP7370-36SA-7 is a positive fixed-output low dropout regulator from Diodes Incorporated, providing a nominal 3.6V output with a maximum continuous current of 300mA. It operates within an input voltage range of 3.2V to 18V and features a typical dropout voltage of 250mV at 300mA load. The device incorporates thermal shutdown, short-circuit protection, and reverse current protection. Packaged in a compact SOT-23-3 surface-mount format, it supports operation across a junction temperature range of -40°C to +125°C.

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

• Ultra-low quiescent current for extended battery life in portable applications
• Reverse current protection prevents discharge through the regulator when input is removed
• Integrated thermal shutdown and current limit circuits ensure robust fault protection
• Compatible with low ESR ceramic capacitors for stable operation

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

• Battery-powered equipment
• Laptop and notebook computers
• Portable information appliances
• Metering devices

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

Verify component authenticity upon receipt by checking manufacturer markings against official datasheet specifications. Confirm package integrity and pin alignment prior to assembly. Review the latest product change notices (PCN) and end-of-life announcements directly from Diodes Incorporated, as this specific part number may be subject to discontinuation or replacement recommendations.

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

Select this component for designs requiring high accuracy and wide input voltage tolerance up to 18V. Ensure the application load does not exceed the 300mA rating and that the input voltage remains above the minimum threshold of 3.2V. Verify that the required output voltage matches the fixed 3.6V configuration, as adjustable versions are not available in this specific suffix.

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

This device belongs to the AP7370 series of ultra-low dropout regulators designed for space-saving applications. It is manufactured by Diodes Incorporated and utilizes CMOS technology to achieve low ground current. The series offers multiple fixed output voltages and packages, positioning it as a standard solution for power management in consumer electronics and portable instrumentation.

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

Diodes Incorporated recommends the AP7375 series as a direct replacement for new designs. Specifically, the AP7375-36W5-7 is listed as a manufacturer-recommended substitute for discontinued or obsolete inventory of the AP7370 series.

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

Is the AP7370-36SA-7 recommended for new designs?

No, the datasheet explicitly states that the AP7370 series is not recommended for new designs.

What is the maximum input voltage for this regulator?

The absolute maximum supply input voltage is rated at 20V, while the recommended operating range extends up to 18V.

Does this component support reverse current flow?

Yes, the AP7370 includes built-in reverse current protection to prevent the output from discharging back into the input source.