AP7341-11FS4-7

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

The AP7341-11FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 1.1V with a maximum guaranteed output current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features high ripple rejection of 75dB at 1kHz alongside low output noise of 60µVrms from 10Hz to 100kHz. The device incorporates an enable pin for power management, achieving a quiescent current as low as 35µA. Packaged in an X2-DFN1010-4 footprint, it supports operation across a temperature range of -40°C to +85°C.

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

• Integrated enable control allows the regulator to be turned on or off via the EN pin, facilitating system power management.
• High ripple rejection capability effectively suppresses input supply noise to ensure clean power delivery.
• Low output noise performance minimizes interference in sensitive analog and RF circuitry.
• Built-in short-circuit protection clamps the output current during fault conditions to prevent device 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 that the specific part number matches the required 1.1V fixed output configuration. Confirm the package type is X2-DFN1010-4 and check for RoHS compliance requirements. Ensure the ordering suffix corresponds to the desired tape and reel packaging quantity. Validate that the operating environment falls within the specified -40°C to +85°C temperature range before finalizing procurement.

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

Select this component when a stable 1.1V rail is required for low-power handheld communication equipment. The wide input voltage range accommodates single-cell battery applications. Consider the small X2-DFN1010-4 package for dense PCB layouts where space is limited. Verify that the load transient response meets the specific demands of the downstream circuitry.

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

This device belongs to the AP7341 series of low dropout regulators designed for portable electronics. The series offers various fixed output voltages ranging from 1.1V to 3.3V. All variants share common characteristics such as high PSRR, low noise, and CMOS process technology. The AP7341-11FS4-7 specifically provides the lowest standard voltage option in the lineup.

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

AP7341D-11FS4-7

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

What is the function of the EN pin?

The EN pin enables or disables the regulator. Driving it high turns the regulator on, while pulling it low puts the device into shutdown mode.

How does the device handle short circuits?

When the VOUT pin is shorted to ground, short-circuit protection triggers and clamps the output current to approximately 60mA to protect the regulator.