AP7341D-18FS4-7

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

The AP7341D-18FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 1.8V output with a guaranteed maximum load current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and features high ripple rejection of 75dB at 1kHz. Quiescent current is specified as low as 35µA, while standby current drops to 1.0µA maximum when disabled. Output voltage accuracy is maintained within ±1% at 25°C. The component utilizes an X2-DFN1010-4 package and supports an operating temperature range from -40°C to +85°C.

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

• Integrated enable pin for precise power management and shutdown control
• High ripple rejection ratio ensures clean power delivery under varying conditions
• Low output noise characteristics suitable for sensitive analog circuits
• Built-in short circuit protection safeguards against overcurrent events

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 'D' indicates the presence of an internal auto-discharge feature on the output pin. Confirm that the FS4 package code corresponds to the X2-DFN1010-4 footprint. Ensure compliance with RoHS and REACH directives if required by your manufacturing standards. Cross-reference datasheet revision DS36523 Rev. 5 for the most accurate electrical specifications.

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

Select this component when a fixed 1.8V rail is required with minimal board space constraints. The X2-DFN1010-4 package offers a compact footprint ideal for dense PCB layouts. Consider the 300mA current capability and low quiescent current for battery-operated applications. Verify that the input voltage remains within the 1.7V to 5.25V operational window during all system states.

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

This part belongs to the AP7341 series of low dropout regulators designed for handheld communication equipment. The series includes various fixed output voltages ranging from 1.1V to 3.3V. The 'D' in the part number denotes the version with an integrated N-channel auto-discharge resistor. All variants share similar electrical characteristics and packaging options.

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

AP7341-18FS4-7

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

What is the function of the EN pin?

The EN pin controls the regulator's operation. Driving it high enables the regulator, while pulling it low activates shutdown mode. It must not be left floating.

How does the 'D' suffix affect the component?

The 'D' suffix indicates the inclusion of an internal auto-discharge feature. When disabled, an N-channel transistor connects the output to ground to discharge external capacitors.