AP7351D-18W5-7

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

The AP7351D-18W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.8V output with a maximum current of 150mA. It operates within an input voltage range of 1.4V to 5.5V and features ultra-low quiescent current of 0.5µA and standby current of 0.02µA. The device includes an enable pin for power management, offers 60dB ripple rejection at 1kHz, and maintains ±1% output voltage accuracy across the -40°C to +85°C operating temperature range.

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

• Ultra-low quiescent and standby currents extend battery life in portable applications
• Integrated enable pin allows precise control over regulator activation and shutdown states
• High ripple rejection ratio ensures clean power delivery for noise-sensitive subsystems
• Built-in thermal shutdown and short-circuit protection safeguard against operational faults

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

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

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

Verify that the component matches the specific SOT25 package configuration and the 1.8V fixed output designation. Confirm the presence of the integrated active output discharge feature required for system startup reliability. Ensure compliance with RoHS and halogen-free standards as specified in the manufacturer documentation before finalizing procurement.

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

Select this regulator when designing low-power systems requiring minimal ground current consumption during both active and standby modes. The wide input voltage range accommodates single-cell lithium batteries or varying supply rails. Verify that the load requirements do not exceed the 150mA continuous output limit and that the PCB layout supports the necessary thermal dissipation for the SOT25 package.

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

This component belongs to the AP7351D series of ultra-low quiescent current LDO regulators from Diodes Incorporated. The series provides various fixed output voltages ranging from 0.8V to 4.5V. The W5 suffix specifically denotes the SOT25 surface-mount package variant, distinguishing it from the X2-DFN1010-4 package options available within the same product family.

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

AP7351D-18FS4-7B