AP7343DQ-28FDUW-7

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

The AP7343DQ-28FDUW-7 is a low dropout (LDO) linear voltage regulator manufactured by Diodes Incorporated. It belongs to the AP7343 series, designed for applications requiring high power supply rejection ratio (PSRR) and low output noise. The device provides a fixed output voltage of 2.8V with a guaranteed maximum output current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features a typical PSRR of 75dB at 1kHz. The regulator includes an enable pin for power management and offers high output voltage accuracy. It is packaged in a compact W-DFN2020-6 footprint, suitable for dense PCB layouts.

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

• High Power Supply Rejection Ratio (PSRR) and low output noise characteristics
• Integrated enable input for efficient power control
• Fixed output voltage configuration with high accuracy
• Compact W-DFN2020-6 package for space-constrained designs

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

• Low power handheld communication equipment
• Battery-powered portable devices
• Embedded systems requiring stable low-noise power rails

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

Verify the exact suffix FDUW against official Diodes Incorporated documentation to confirm package type and tape/reel specifications. Ensure compatibility with standard surface-mount assembly processes. Confirm RoHS compliance status through the manufacturer's latest product compliance reports before integration into regulated assemblies.

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

Select this component when a fixed 2.8V rail is required with minimal board space. The W-DFN2020-6 package offers a smaller footprint compared to SOT-25 alternatives. Consider the 300mA current limit and 1.7V minimum input voltage for battery-operated applications where efficiency and noise performance are critical constraints.

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

This part is a member of the AP7343 family from Diodes Incorporated, which specializes in 300mA high PSRR LDOs. The series includes variants with different output voltages and packages such as SOT-25-5 and X2-DFN1010-4. The AP7343DQ-28FDUW-7 specifically utilizes the W-DFN2020-6 package, distinguishing it from other series members while maintaining core electrical performance metrics like low quiescent current and thermal protection.

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

Direct substitutes include other AP7343 variants with identical 2.8V output but different packages, such as AP7343D-28W5-7 (SOT-25-5). Cross-referencing pinouts and thermal pads is essential when substituting between DFN and SOT packages.