AP7340D-32FS4-7

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

The AP7340D-32FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.2V with an accuracy of ±1%. The device supports a maximum output current of 150mA and operates within an input voltage range of 1.7V to 5.25V. Key electrical characteristics include a ripple rejection ratio of 75dB at 1kHz, a typical quiescent current of 35µA, and an output noise voltage of 60µVrms from 10Hz to 100kHz. It features fold-back short circuit protection and is housed in an X2-DFN1010-4 package.

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

• Integrated enable pin for power control and shutdown mode management
• Built-in auto-discharge mechanism to rapidly release stored charge upon disable
• Fold-back short circuit protection to limit output current during fault conditions
• High power supply ripple rejection capability for clean signal processing

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 suffix FS4-7R against official Diodes Incorporated documentation to confirm tape and reel packaging quantities. Ensure the D variant designation matches requirements for integrated discharge functionality. Confirm RoHS compliance status through manufacturer quality statements before final procurement authorization.

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

Select this component when a precise 3.2V rail is required for sensitive analog or RF circuits. The low quiescent current makes it suitable for battery-powered portable devices. Verify that the input voltage remains above the minimum threshold while accounting for dropout voltage under full load conditions. Consider thermal dissipation limits based on the PCB copper area available for the X2-DFN1010-4 package.

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

This part belongs to the AP7340 series of low dropout regulators designed for handheld communication equipment. The 'D' suffix indicates the inclusion of an internal discharge resistor network, distinguishing it from the standard AP7340 which lacks this feature. The series utilizes a CMOS process to achieve high efficiency and low power consumption across various fixed output voltage options.

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

AP7340-32FS4-7 serves as a functional substitute if the auto-discharge feature is not required in the application design.