AP7348D-3018RS4-7

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

The AP7348D-3018RS4-7 is a four-channel low dropout regulator from Diodes Incorporated. It provides fixed output voltages of 3.0V on channels 1 and 2, and 1.8V on channels 3 and 4. Each channel supports an output current of 300mA with ±1% accuracy. The device operates within a 1.7V to 5.25V input range. Key electrical parameters include a typical ripple rejection of 75dB at 1kHz, 60µVrms output noise (10Hz to 100kHz), and a total quiescent current of 160µA. It features independent enable inputs, thermal shutdown, and foldback short-circuit protection.

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

• Four independent LDO channels with individual error amplifiers and discharge circuits
• Dual enable pins allowing separate control of paired output channels
• Integrated over-temperature sensing for each channel with global fault disable
• Low output noise and high power supply ripple rejection for sensitive loads

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 the specific ordering suffix RS4-7 corresponds to the X1-DFN1612-8 package and tape-and-reel quantity. Confirm that the internal voltage codes 30 and 18 match the required 3.0V and 1.8V outputs respectively. Ensure the component meets RoHS and halogen-free requirements if specified by the design. Check datasheet notes regarding automotive qualification availability if operating in harsh environments.

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

Select this component when multiple distinct voltage rails are needed from a single source. The dual enable architecture allows grouping channels for power management. Verify that the combined power dissipation remains below the 600mW limit to avoid triggering thermal shutdown. Ensure input capacitors meet the minimum 4.7µF recommendation for stability under transient load conditions.

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

This part belongs to the AP7348 family of multi-channel regulators designed for space-constrained portable electronics. It utilizes a CMOS process to achieve low quiescent current and small footprint. The X1-DFN1612-8 package facilitates dense PCB layouts. The device integrates comprehensive protection features including foldback current limiting and auto-discharge upon shutdown.

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

Public confirmed substitute part numbers: None identified.