AP7348D-3333RS4-7

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

The AP7348D-3333RS4-7 is a four-channel low dropout regulator from Diodes Incorporated, housed in an X1-DFN1612-8 (Type B) package. It provides fixed 3.3V outputs across all channels with a maximum output current of 300mA per channel and a total power dissipation limit of 600mW. The device operates within a 1.7V to 5.25V input voltage range, featuring a typical ripple rejection of 75dB at 1kHz and a low output noise of 60µVrms. Quiescent current totals 160µA when all channels are active, with a standby current of 1.0µA maximum.

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

• Four independent regulated channels with individual error amplifiers and discharge circuits
• High power supply rejection ratio for effective noise filtering
• Integrated thermal shutdown and foldback short-circuit protection mechanisms
• Dual enable inputs allowing grouped control of the four output channels

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

• Smart Phone/Tablet
• WIFI Access Points
• Communication Module
• Camera Module, Appliances
• RF Supply for IOT/LPWAN

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

Verify that the specific part number matches the required output voltage configuration and package type before ordering. Confirm compliance with environmental directives such as RoHS 3 and Halogen-free status if mandated by project specifications. Ensure the supplier source is authorized to guarantee product authenticity and traceability. Review the datasheet for absolute maximum ratings to prevent operational stress during procurement planning.

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

Select this component when multiple isolated 3.3V rails are required within a compact footprint. Evaluate the total power dissipation against the 600mW limit to ensure adequate thermal management on the PCB layout. Consider the dual enable pin architecture for simplified power sequencing control. Verify that the input voltage range accommodates the system's supply variations while maintaining stability under expected load conditions.

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

This device belongs to the AP7348 series of high PSRR low noise LDOs designed for portable communication equipment. It utilizes a CMOS process to achieve low quiescent current and high accuracy. The family offers various fixed output voltage combinations across its four channels, packaged in the space-saving X1-DFN1612-8 format suitable for dense PCB layouts.

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

Consult official documentation for qualified automotive-grade alternatives or devices with similar pinouts and electrical characteristics. Verify compatibility regarding enable logic, output discharge functionality, and thermal performance before substituting.