AP7344-3318RH4-7

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

The AP7344-3318RH4-7 is a dual low-dropout regulator from Diodes Incorporated, packaged in an X2-DFN1612-8 format. It provides two fixed output voltages: Channel 1 at 3.3V and Channel 2 at 1.8V. The device guarantees a continuous output current of 300mA per channel with ±1% accuracy at +25°C. Operating input voltage ranges from 1.7V to 5.25V. Key electrical characteristics include a typical ripple rejection of 75dB at 1kHz, low output noise of 60µVrms (10Hz to 100kHz), and a quiescent current as low as 50µA.

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

• Dual-channel architecture with independent enable inputs for each regulator
• High power supply ripple rejection capability for clean signal processing
• Ultra-low output noise suitable for sensitive RF circuitry
• Integrated short-circuit protection and thermal shutdown mechanisms

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

• Smart phones and tablets
• RF supplies
• Cameras
• Portable videos
• Wireless communication devices

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

Verify the specific ordering suffix RH4-7 confirms the X2-DFN1612-8 package and tape-and-reel quantity. Confirm that the non-discharge variant matches the system's power-down requirements. Ensure the component source is authorized to avoid counterfeit parts. Check RoHS compliance status against current environmental directives before finalizing procurement.

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

Select this component when dual isolated rails are required within a compact footprint. The 3.3V/1.8V combination supports standard logic and analog interfaces. Verify input voltage stability remains within the 1.7V to 5.25V range under all load conditions. Consider the low dropout performance if operating near minimum input thresholds.

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

This part belongs to the AP7344 series of dual LDOs designed for portable electronics. It utilizes a CMOS process to achieve low quiescent current and high PSRR. The datasheet explicitly states it is not recommended for new designs, suggesting the AP7345D as a modern alternative for future projects.

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

The AP7345D is officially recommended by the manufacturer as a replacement for new designs. Verify pin compatibility and electrical specifications before substituting. No other direct cross-reference part numbers are documented in the official datasheet.

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

Does the AP7344-3318RH4-7 feature built-in output discharge?

No, the absence of the 'D' suffix in the part number indicates this version does not have built-in auto-discharge resistors.

What is the maximum guaranteed output current per channel?

Each channel guarantees a continuous output current of 300mA.