AP7383-44WR-7

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

The AP7383-44WR-7 is a positive voltage regulator IC from the AP7383 series, manufactured by Diodes Incorporated. It provides a fixed output voltage of 4.4V with a maximum continuous output current of 150mA. The device supports a wide input voltage range from 3.5V to 30V and operates within a junction temperature range of -40°C to +125°C. Packaged in a space-saving SOT-25 (WR) format with five pins, it features an ultra-low quiescent ground current of 1.8µA at no load. Key electrical characteristics include a typical dropout voltage of 360mV at 50mA output and high line/load regulation.

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

• Ultra-low quiescent ground current for extended battery life
• Wide input voltage range supporting up to 30V supply
• Integrated thermal shutdown and current limit protection
• Compatible with low ESR ceramic capacitors

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

• Battery-powered equipment
• Laptops, palmtops, notebook computers
• Portable information appliances

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

Verify the specific suffix 'WR' corresponds to the SOT-25 package variant during procurement. Confirm that the 4.4V output version meets the target circuit requirements. Ensure compatibility with standard surface-mount assembly processes. Check for any recent design change notices or obsolescence warnings from the manufacturer before finalizing orders.

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

Select this component when a stable 4.4V rail is required from a variable or high-voltage source up to 30V. The SOT-25 WR package offers a compact footprint suitable for space-constrained portable designs. Consider the thermal resistance and power dissipation limits if operating near the maximum current rating or elevated temperatures.

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

This part belongs to the AP7383 ULDO regulator family, designed for applications requiring high accuracy and low dropout performance. The series includes various fixed output voltages and package options such as SOT89 and U-DFN2020-6. The AP7383-44WR-7 specifically targets portable electronics needing efficient power management from single-cell or multi-cell battery sources.

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

Consult official documentation for direct substitutes. Verify pinout compatibility and electrical specifications against alternatives like other AP7383 variants or different manufacturers' LDOs.

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

What is the function of Pin 3 on the AP7383-44WR-7?

Pin 3 serves as the Enable (EN) input. Applying a logic high voltage activates the regulator, while a logic low voltage disables it.

Does the AP7383-44WR-7 require external components for operation?

Yes, the datasheet recommends using a 1µF input capacitor (CIN) and a 1µF output capacitor (COUT) for stability.