AP7375-50WR-7

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

The AP7375-50WR-7 is a fixed-output low-dropout linear regulator manufactured by Diodes Incorporated. It provides a regulated 5V output with a maximum load current of 300mA. The device supports a wide input voltage range from 3V to 45V and features a dedicated enable pin capable of handling up to 45V. Key electrical characteristics include a typical quiescent current of 2.1µA, high power supply rejection ratio of 85dB at 1kHz, and excellent line and load regulation. It is housed in an SOT-25 package (Package Code WR) and operates within an ambient temperature range of -40°C to +85°C.

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

• Integrated enable control pin for precise power management
• High output voltage accuracy with ±2% tolerance
• Built-in thermal shutdown and short-circuit protection mechanisms

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

• Battery-powered equipment
• Smoke detectors and sensors
• Microcontroller applications
• Home appliances

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

Verify the specific suffix 'WR' corresponds to the SOT-25 tape and reel packaging configuration before ordering. Confirm that the required output voltage matches the fixed 5.0V specification inherent to the '50' designation in the part number. Ensure the application environment remains within the specified operating temperature limits and input voltage constraints defined in the datasheet.

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

Select this component when a stable 5V rail is required from a higher or variable input source up to 45V. The low quiescent current makes it suitable for battery-operated systems where standby power consumption must be minimized. The integrated enable pin allows for system-level power sequencing and shutdown control without external logic components.

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

This part belongs to the AP7375 series of ultra-low dropout regulators designed for wide input voltage applications. The series offers multiple fixed output voltages and various package options including SOT23, SOT89, and U-DFN2020-6. The AP7375-50WR-7 specifically utilizes the SOT-25 footprint with an exposed pad for enhanced thermal dissipation capabilities.

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

AP7375-50W5-7

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

What is the function of the NC pin on the SOT-25 package?

Pin 4 is internally not connected. It is recommended to connect it to ground via PCB copper to maximize thermal dissipation, but it does not serve as a primary ground electrode.

Does the AP7375-50WR-7 require an external capacitor for stability?

Yes, an output capacitor is required for stability. A minimum of 1µF ceramic capacitor (X7R or X5R) is recommended, placed close to the VOUT and GND pins.