AP7354D-18FS4-7

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

The AP7354D-18FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, delivering a precise 1.8V output with a maximum guaranteed load current of 150mA. It operates within an input voltage range of 2.0V to 5.5V and maintains high accuracy with ±1% tolerance at room temperature. The device features ultra-low quiescent current of 0.25µA and standby current of 0.02µA. It incorporates an integrated enable pin for power control and includes built-in output discharge functionality. The component is housed in an X2-DFN1010-4 (Type B) package and supports an operating ambient temperature from -40°C to +85°C.

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

• Ultra-low quiescent current design optimized for battery-operated devices
• Integrated enable pin for active power management and shutdown control
• Built-in output discharge circuitry for rapid voltage decay upon disable
• High output voltage accuracy with ±1% tolerance

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

• Wearable electronics
• Sensor modules for Internet-of-Things (IoT)
• Wireless communication modules
• Battery-operated devices

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

Verify the specific ordering suffix FS4 corresponds to the X2-DFN1010-4 package type and D indicates the presence of the output discharge feature. Confirm that the required output voltage matches the 1.8V specification. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range. Check for compliance with RoHS and halogen-free requirements if mandated by the end product standards.

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

Select this component when a compact surface-mount solution is required for low-power applications. The inclusion of the enable pin allows for system-level power sequencing and energy savings. The built-in discharge feature distinguishes it from standard versions, ensuring faster output voltage collapse during shutdown. Verify that the PCB layout accommodates the X2-DFN1010-4 footprint and thermal dissipation needs.

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

This part belongs to the AP7354 series of 150mA ultra-low quiescent current LDOs. The 'D' suffix specifically denotes the version equipped with an internal output discharge resistor, which is absent in the base AP7354 model. The 'FS4' suffix identifies the X2-DFN1010-4 (Type B) package variant, offering a smaller footprint compared to SOT23 or SOT25 options.

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

AP7354-18FS4-7 serves as a direct substitute if the output discharge function is not required in the target application.