AP7344-3328RH4-7

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

The AP7344-3328RH4-7 is a dual-channel low-dropout regulator manufactured by Diodes Incorporated. It provides fixed output voltages of 3.3V on Channel 1 and 2.8V on Channel 2, with a guaranteed output current of 300mA per channel. The device operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz. Quiescent current is typically 50µA when one channel is active. The component utilizes an X2-DFN1612-8 package.

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

• Dual-channel architecture with independent enable inputs for each regulator
• High ripple rejection capability for noise-sensitive applications
• Low output noise performance suitable for precision circuits
• Integrated short-circuit protection and thermal shutdown

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 packing configuration. Confirm that the part number corresponds to the non-discharge variant as indicated by the absence of the 'D' suffix in the base model. Ensure compatibility with RoHS 3 compliance requirements before finalizing procurement orders.

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

Select this component for designs requiring two distinct regulated rails from a single IC footprint. The 3.3V/2.8V combination supports logic and peripheral interfaces. Verify that the input voltage remains above the dropout threshold for both channels under maximum load conditions. Consider the small package size for dense PCB layouts where space is limited.

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

This device belongs to the AP7344 series of dual LDO regulators. It is designed for low-power handheld communication equipment. The datasheet explicitly states that the AP7344 is not recommended for new designs and recommends using the AP7345D instead. This indicates the component may be in a lifecycle transition phase.

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

Diodes Incorporated officially recommends the AP7345D as the replacement for the AP7344. Engineers should evaluate the AP7345D datasheet for pinout and electrical parameter compatibility before substituting.