AP7340D-11FS4-7

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

The AP7340D-11FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 1.1V with a maximum load current capability of 150mA. It operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio performance of 75dB at 1kHz. The device incorporates an enable pin for power control and includes internal short-circuit protection. It is housed in an X2-DFN1010-4 surface-mount package designed for compact PCB layouts.

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

• Integrated auto-discharge circuitry that actively pulls the output voltage to ground when the enable pin is deactivated
• High ripple rejection performance ensuring stable operation under noisy power supply conditions
• Low quiescent current consumption optimized for battery-powered portable applications
• Built-in thermal and current limiting protections to safeguard against overload events

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

• RF supply circuits in wireless communication modules
• Portable media players and video devices
• Smartphones and tablet computers
• Wireless adapters and handheld equipment

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

Verify the specific 'D' suffix indicates the inclusion of the output discharge feature compared to standard variants. Confirm the FS4 package code matches the required X2-DFN1010-4 footprint for your layout. Ensure the -7 or -7R ordering suffix aligns with your preferred tape and reel quantity specifications before finalizing procurement orders.

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

Select this component when a precise 1.1V rail is required alongside active output discharge capabilities. The device suits designs needing high PSRR to protect sensitive RF sections from input noise. Consider the X2-DFN1010-4 package constraints regarding thermal dissipation and copper area requirements for optimal heat spreading during continuous operation.

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

This part belongs to the AP7340 family of CMOS low dropout regulators. The 'D' designation specifically differentiates it from non-discharge versions by adding an internal N-channel resistor network. This family targets ultra-low power applications requiring minimal footprint and high accuracy in portable consumer electronics.

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

AP7340-11FS4-7 serves as a direct functional substitute if the output discharge feature is not required in the design.

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

What is the function of the 'D' suffix in the AP7340D-11FS4-7 part number?

The 'D' suffix indicates that the device includes an integrated auto-discharge feature, which actively pulls the output voltage to ground when the enable pin is set to a low state.

How does the enable pin operate on this regulator?

Driving the EN pin high turns the regulator on, while pulling it low activates the shutdown mode and engages the internal discharge resistor to rapidly remove charge from the output capacitor.