AP7340-33FS4-7

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

The AP7340-33FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.3V with an accuracy of ±1% at +25°C and ±1.5% across the operating temperature range. The device supports a maximum output current of 150mA and operates within an input voltage range of 1.7V to 5.25V. Key electrical specifications include a quiescent current of 35µA, ripple rejection of 75dB at 1kHz, and output noise of 60µVrms from 10Hz to 100kHz. 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
• High ripple rejection ratio
• Low output noise performance
• Built-in short circuit protection

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 part number against official manufacturer documentation to confirm compatibility with your design requirements. Ensure that the ordering suffix matches the desired packaging format. Cross-reference datasheet parameters such as output voltage accuracy and thermal characteristics with your system constraints before finalizing procurement decisions.

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

Select this component when a stable 3.3V supply is required for low-power portable electronics. Consider the low quiescent current for battery-operated applications. Evaluate the dropout voltage under expected load conditions to ensure regulation is maintained. Verify PCB layout guidelines regarding capacitor placement and ground plane connections for optimal stability.

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

This device belongs to the AP7340 series of low dropout regulators designed for handheld communication equipment. It utilizes a CMOS process to achieve high output voltage accuracy and low power consumption. The series includes various fixed output voltage options and is packaged in a compact X2-DFN1010-4 footprint suitable for dense PCB layouts.

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

AP7340D-33FS4-7

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 AP7340 handle short circuits?

When the VOUT pin is shorted to GND, short circuit protection triggers and clamps the output current to approximately 60mA to prevent damage.