AP7344D-1828RH4-7

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

The AP7344D-1828RH4-7 is a dual-channel low-dropout regulator manufactured by Diodes Incorporated. It provides fixed output voltages of 1.8V on Channel 1 and 2.8V on Channel 2, with each channel capable of delivering up to 300mA of output current. The device operates within an input voltage range of 1.7V to 5.25V and features high ripple rejection of 75dB at 1kHz alongside low output noise of 60µVrms. Quiescent current is specified as low as 50µA per active channel. The component utilizes an X2-DFN1612-8 package and includes integrated enable controls for independent channel management.

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

• Dual-channel architecture with individual enable pins for independent power control
• High ripple rejection ratio combined with ultra-low output noise for sensitive circuits
• Integrated auto-discharge function to rapidly remove residual charge from outputs when disabled

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

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

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

Verify the specific ordering suffix RH4-7 to confirm the X2-DFN1612-8 package and tape-and-reel packing configuration. Ensure that the D suffix in the part number is accounted for, as it indicates the presence of built-in discharge resistors on the output channels. Confirm compliance with RoHS 3 directives and halogen-free requirements during procurement.

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

Select this component when a compact dual-rail solution is required for portable electronics. The device supports inputs down to 1.7V, making it suitable for single-cell lithium-ion battery applications. Verify that the load transient response and ESR requirements align with the recommended ceramic capacitor values provided in the datasheet application information.

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

This component belongs to the AP7344 series of dual LDO regulators designed for space-constrained handheld devices. The manufacturer explicitly states that the AP7344 is not recommended for new designs and advises using the AP7345D instead. Despite this recommendation, the AP7344 remains available for existing production runs and legacy system maintenance.

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

Diodes Incorporated recommends the AP7345D as the designated replacement for new designs. Engineers should evaluate the AP7345D datasheet to ensure pin compatibility and performance equivalence before transitioning away from the AP7344 series.