AP7344D-3328RH4-7

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

The AP7344D-3328RH4-7 is a dual low-dropout regulator from Diodes Incorporated, packaged in an X2-DFN1612-8 footprint. It provides two independent output channels with fixed voltages of 3.3V and 2.8V. The device guarantees a continuous output current of 300mA per channel within an input voltage range of 1.7V to 5.25V. Key electrical characteristics include a ripple rejection ratio of 75dB at 1kHz, an output noise voltage of 60µVrms (10Hz to 100kHz), and a quiescent current as low as 50µA. The component operates reliably across a temperature range of -40°C to +85°C.

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

• Dual-channel architecture providing independent 3.3V and 2.8V outputs for simultaneous power rail generation
• Integrated enable inputs allow precise control over individual channel activation and shutdown states
• Built-in auto-discharge circuitry ensures rapid output voltage decay when regulators are disabled
• High ripple rejection and low output noise performance suitable for sensitive RF and communication circuits

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

• Smart phones and tablets
• RF supplies
• Cameras
• Portable videos
• Wireless adapters

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

Verify the specific suffix 'D' indicates the inclusion of the internal auto-discharge feature on both channels. Confirm that the package code 'RH4' corresponds to the X2-DFN1612-8 form factor. Ensure the ordering quantity matches the standard tape and reel packaging requirements specified by the manufacturer.

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

Select this component when a compact dual-output solution is required for space-constrained portable electronics. The integrated discharge function simplifies system startup sequencing compared to non-discharge variants. Verify that the 300mA current rating meets the peak load demands of the connected loads without exceeding thermal limits.

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

This part belongs to the AP7344 series of high PSRR low-noise LDOs. It serves as a predecessor to the AP7345D family. The datasheet explicitly notes that the AP7344 is not recommended for new designs and directs engineers toward the newer AP7345D series for future development projects.

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

Diodes Incorporated recommends using the AP7345D series as a replacement. Specific pin-compatible or functionally equivalent parts should be sourced from the AP7345D product line.