AP7344D-1833RH4-7

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

The AP7344D-1833RH4-7 is a dual-channel low-dropout regulator manufactured by Diodes Incorporated. It provides fixed output voltages of 1.8V on Channel 1 and 3.3V on Channel 2, housed in an X2-DFN1612-8 package. The device supports an input voltage range from 1.7V to 5.25V with a guaranteed output current of 300mA per channel. Key electrical specifications include ±1% output accuracy at +25°C, 75dB ripple rejection at 1kHz, and 60µVrms output noise. Quiescent current is 50µA when one channel is active, dropping to 1µA in standby mode.

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

• Dual-channel architecture with independent enable inputs for each regulator
• Integrated resistor network providing fixed output voltage options
• Built-in auto-discharge function to ensure known system startup states
• Foldback short-circuit protection to prevent overheating during faults

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

• Smart phones and tablets
• RF power supplies
• Cameras
• Portable media players
• Wireless communication devices

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

Verify the specific suffix RH4-7 confirms the X2-DFN1612-8 package and tape-and-reel packing quantity. Confirm the 'D' designation indicates the presence of the internal discharge feature. Ensure the ordering code matches the required 1.8V/3.3V combination. Check for RoHS compliance status as defined by the manufacturer's environmental declarations.

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

Select this component for applications requiring two distinct regulated rails from a single footprint. The low quiescent current makes it suitable for battery-powered portable electronics. Verify that the load transient requirements are met by the recommended ceramic output capacitors. Consider the thermal dissipation capabilities of the X2-DFN1612-8 package under maximum load conditions.

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

This part belongs to the AP7344 family of dual LDOs designed for high PSRR and low noise performance. It utilizes a CMOS process to achieve low dropout voltage and high efficiency. The device is intended for dense PCB layouts common in modern handheld consumer electronics. Note that the datasheet explicitly states this series is not recommended for new designs.

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

Diodes Incorporated recommends using the AP7345D as the replacement for new designs. Verify if the AP7345D offers compatible pinouts and electrical characteristics for your specific application requirements before substitution.