AP7341-185FS4-7

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

The AP7341-185FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 1.85V with a guaranteed maximum output current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) 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.

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

• Integrated enable pin for precise power management control
• High ripple rejection capability for sensitive RF applications
• Low output noise performance suitable for communication equipment
• Built-in short circuit protection to prevent thermal damage

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 Diodes Incorporated documentation to confirm the presence of the auto-discharge feature. Confirm that the X2-DFN1010-4 package matches the required PCB footprint and thermal dissipation requirements. Ensure compatibility with RoHS3 and REACH standards if applicable to the target market regulations.

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

Select this component for designs requiring a fixed 1.85V rail with moderate current demands up to 300mA. The wide input voltage range accommodates single-cell lithium battery operation. Consider the low quiescent current for battery-powered portable devices. Verify that the external capacitor ESR values fall within the stability region defined in the datasheet application information.

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

This part belongs to the AP7341 series of CMOS low dropout regulators. The series offers various fixed output voltages ranging from 1.1V to 3.3V. The 'D' suffix variant includes an internal discharge resistor, whereas the base model without the 'D' does not. All variants share the same compact X2-DFN1010-4 package and core electrical characteristics.

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

AP7341D-185FS4-7

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

Does the AP7341-185FS4-7 include an output discharge resistor?

No, the AP7341-185FS4-7 does not include an integrated output discharge resistor. To achieve output discharge functionality, the AP7341D-185FS4-7 variant must be selected.

What is the recommended configuration for the Enable (EN) pin if always-on operation is desired?

If the enable feature is not utilized, the EN pin should be tied directly to the VIN pin to keep the regulator output active at all times.