AP7354D-18W5-7

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

The AP7354D-18W5-7 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 2.0V to 5.5V and features ultra-low quiescent current of 0.25µA, dropping to 0.02µA in standby mode. It includes an integrated enable pin for power control and built-in output discharge functionality. The component is housed in a surface-mount SOT-25-5 package and supports operation from -40°C to +85°C.

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

• Ultra-low quiescent current consumption for extended battery life
• Integrated enable pin for precise power management control
• Built-in active output discharge for rapid shutdown
• High output voltage accuracy with ±1% tolerance

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

• Wearable electronics
• IoT sensor modules
• Wireless communication modules
• Battery-operated devices

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

Verify the specific part number against official manufacturer documentation to confirm the presence of the 'D' suffix indicating built-in output discharge. Ensure the ordering suffix matches the required tape and reel packaging configuration. Confirm RoHS compliance status through the supplier's certified environmental declarations prior to final procurement.

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

Select this component when designing circuits requiring a fixed 1.8V rail with minimal static power draw. The inclusion of the enable pin allows for system-level power sequencing. Verify that the application load does not exceed the 150mA continuous output limit. Consider the thermal resistance characteristics of the SOT-25 package for heat dissipation requirements under maximum load conditions.

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

This device belongs to the AP7354 series of low dropout regulators designed for portable applications. The 'D' variant specifically incorporates an internal discharge resistor connected to ground when disabled, distinguishing it from standard versions. It utilizes CMOS technology to achieve high efficiency and low noise performance suitable for sensitive analog and digital loads.

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

AP7354-18W5-7 (Non-discharge version)

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

What is the function of the 'D' suffix in the part number?

The 'D' suffix indicates that the regulator includes an active output discharge feature, which rapidly pulls the output voltage to ground when the enable pin is deactivated.

How is the enable pin utilized?

Driving the EN pin high activates the regulator output, while pulling it low disables the output and engages the internal discharge circuit.