AP7366-W5-7

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

The AP7366-W5-7 is a low-dropout linear regulator manufactured by Diodes Incorporated, housed in an SOT-25 package. It provides an adjustable output voltage ranging from 0.8V to 5.0V with a maximum continuous output current of 600mA. The device operates within an input voltage range of 2.2V to 6V and features a typical quiescent current of 60µA. Key electrical specifications include a dropout voltage of 285mV at 600mA for the 2.0V fixed variant, a power supply rejection ratio (PSRR) of 75dB at 1kHz, and a fast start-up time of 150µs. It includes built-in current limit, short-circuit protection, and thermal shutdown.

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

• Adjustable output voltage configuration via external resistor divider
• Integrated enable pin for active-high control
• Built-in overcurrent, short-circuit, and thermal-shutdown protections

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

• Servers and notebook computers
• FPGA and DSP core or I/O power supplies
• Consumer electronics
• Low and medium power applications

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

Verify that the specific part number matches the required output voltage configuration, as the base AP7366 series includes both fixed and adjustable variants. Confirm the package type is SOT-25 and check for RoHS compliance status. Ensure the design accounts for the recommended 1µF ceramic capacitors on input and output pins for stability. Review the datasheet for absolute maximum ratings to prevent damage during operation.

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

Select this component when an adjustable output voltage between 0.8V and 5.0V is required with up to 600mA load capability. It is suitable for battery-powered devices due to its low quiescent current. Consider the SOT-25 package constraints and ensure adequate PCB copper area for thermal management. Verify that the input voltage range of 2.2V to 6V aligns with the system power supply.

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

The AP7366 belongs to the AP7366 family of low-dropout regulators designed for low-power applications. This specific suffix indicates the SOT-25 package and tape & reel packaging. The device integrates pass element, error amplifier, band-gap reference, and protection circuitry. It is intended for portable and mobile devices requiring efficient power regulation with minimal ground current consumption.

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

The datasheet recommends using AP7366EA as a replacement for new designs. Other variants within the AP7366 series may be considered if fixed output voltages are acceptable instead of adjustable.

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

What is the function of the EN pin?

The EN pin is an active-high enable input. Setting it to a logic-high level turns the regulator on, while pulling it low turns it off.

How is the output voltage adjusted?

The output voltage is set using an external resistor divider connected to the ADJ pin. The formula VOUT = VREF * (1 + R2/R1) applies, where VREF is 0.8V.

What protection features are included?

The device includes current-limit protection, short-circuit protection, and thermal-shutdown protection to prevent damage under fault conditions.