AP7341D-33FS4-7

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

The AP7341D-33FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.3V with a guaranteed maximum output current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and maintains an output voltage accuracy of ±1% at 25°C. Key electrical characteristics include a typical quiescent current of 35µA, a ripple rejection ratio of 75dB at 1kHz, and an output noise voltage of 60µVrms across the 10Hz to 100kHz bandwidth. The component is housed in an X2-DFN1010-4 package.

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

• Integrated enable pin for power control
• Built-in short circuit protection
• Low output noise performance
• High power supply ripple rejection

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

• Smart Phone/Pad
• RF Supply
• Cameras
• Portable Video
• Wireless Communication

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

Verify the specific ordering suffix against official documentation to confirm the presence of the internal auto-discharge feature. Confirm that the X2-DFN1010-4 package dimensions align with the target PCB footprint requirements. Ensure compliance with RoHS and halogen-free specifications as defined by the manufacturer's quality standards.

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

Select this component when a stable 3.3V rail is required from inputs between 1.7V and 5.25V. The integrated discharge function distinguishes it from standard versions. Consider the thermal dissipation capabilities of the X2-DFN1010-4 package for dense layouts. Verify that the load transient response meets system stability requirements.

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

This part belongs to the AP7341 series of CMOS low dropout regulators. The 'D' designation indicates the inclusion of an internal auto-discharge mechanism on the output pin. This feature ensures rapid voltage decay upon shutdown, which is beneficial for battery-powered portable devices requiring strict power management protocols.

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

AP7341-33FS4-7 (Non-discharge version)

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

What is the function of the EN pin?

The EN pin controls the regulator state. Driving it high enables the output, while pulling it low activates shutdown mode.

How does the D suffix affect operation?

The D suffix indicates the device includes an internal N-channel auto-discharge resistor that rapidly discharges the output capacitor when disabled.