AP7351D-18FS4-7B

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

The AP7351D-18FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 1.8V output with a maximum current of 150mA. The device operates within an input voltage range of 1.4V to 5.5V and features ultra-low quiescent current of 0.5µA, with standby current as low as 0.02µA. Output voltage accuracy is ±1%. It includes an enable pin for power control and active output discharge. The component is housed in an X2-DFN1010-4 (Type B) package.

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

• Ultra-low quiescent current design suitable for battery-operated devices
• Integrated enable pin for precise power management and shutdown control
• High output voltage accuracy of ±1% across operating conditions
• Active output discharge capability when the device is disabled

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

• Wearable Electronics
• Sensor Module for Internet-Of-Things (IOT)
• Wireless Communication Module
• Battery-Operated Device
• Camera
• Image Sensor

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

Verify that the ordering suffix FS4 corresponds to the X2-DFN1010-4 (Type B) package and -7B indicates tape and reel packaging. Confirm the specific output voltage code matches the required 1.8V specification. Ensure compatibility with RoHS compliance requirements and check for any automotive-specific change control needs if applicable to the target application environment.

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

Select this component when extended battery life is critical due to its ultra-low quiescent and standby currents. The 150mA output capacity supports moderate load requirements. Verify that the input voltage remains within the 1.4V to 5.5V range. Consider the thermal resistance of the X2-DFN1010-4 package for heat dissipation in compact layouts. Ensure the enable pin logic levels align with the system control signals.

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

This part belongs to the AP7351D series of low dropout regulators from Diodes Incorporated. The series offers various fixed output voltages ranging from 0.8V to 4.5V. It is designed for portable applications requiring high efficiency and low power consumption. The family includes different package options such as SOT25 and X2-DFN1010-4 to accommodate diverse PCB space constraints.

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

AP7351D-18FS4-7

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

What is the function of the EN pin on the AP7351D?

The EN pin is an enable input used to turn the regulator on or off. Driving it high enables the regulator, while pulling it low puts the device into shutdown mode.

Does the AP7351D support active output discharge?

Yes, the AP7351D includes an active output discharge feature. When the enable pin is pulled low, the output is discharged through an internal resistor.