AP7340-36FS4-7

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

The AP7340-36FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.6 V with a guaranteed maximum output current of 150 mA. The device operates within an input voltage range of 1.7 V to 5.25 V and maintains a quiescent current as low as 35 µA. It features high ripple rejection of 75 dB at 1 kHz and low output noise of 60 µVrms from 10 Hz to 100 kHz. The unit 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 suffix against official documentation to confirm the exact output voltage, package type, and packaging quantity. Ensure compliance with RoHS and environmental requirements relevant to the target market. Confirm thermal dissipation capabilities match the intended PCB layout and operating conditions before finalizing procurement.

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

Select this component when a stable 3.6 V rail is required with minimal footprint. Consider the 150 mA current limit and 35 µA quiescent current for battery-powered designs. Evaluate the need for the enable function versus tying the pin to VIN. Verify that the input voltage remains above the dropout threshold under all load conditions.

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

This device belongs to the AP7340 series of CMOS low dropout regulators. The series offers various fixed output voltages ranging from 1.1 V to 3.3 V, though this specific variant provides 3.6 V. All members share the same X2-DFN1010-4 package and core electrical characteristics, differing primarily in their internal resistor network settings.

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

AP7340-33FS4-7

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 device on, while pulling it low activates shutdown mode.

How does the AP7340 handle short circuits?

It includes fold-back short circuit protection that clamps the output current to approximately 60 mA when the output is shorted to ground.