AP7343-105W5-7

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

The AP7343-105W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 1.05V. It operates within an input voltage range of 1.7V to 5.25V and supports a guaranteed output current of 300mA. The device features high power supply rejection ratio (PSRR) of 75dB at 1kHz and low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is typically 35µA. It utilizes SOT25 packaging with pin assignments for VIN, GND, EN, and VOUT.

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

• Integrated enable control for power management
• High ripple rejection capability
• Low output noise performance
• Built-in short-circuit and thermal protection

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

• Smart phones/tablets
• RF supplies
• Cameras
• Portable videos
• Wireless communication

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

Verify the specific ordering suffix W5 confirms the SOT25 package type and the -7 indicates tape and reel packing. Ensure the part number matches the required 1.05V fixed output configuration. Confirm compliance with RoHS and halogen-free requirements as stated in the datasheet notes. Cross-reference the manufacturer's official documentation for any updates to the revision history or marking information before finalizing procurement specifications.

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

Select this component when a stable 1.05V rail is required for low-power portable electronics. The SOT25 package offers a compact footprint suitable for dense PCB layouts. Consider the 300mA current limit and dropout voltage characteristics relative to the minimum input voltage available in the system design. Verify that the load transient response meets the application's dynamic requirements.

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

This part belongs to the AP7343 family of high PSRR low-noise LDOs. The series includes various fixed output voltages ranging from 0.9V to 3.6V. Different packages such as X2-DFN1010-4 are also available. The AP7343Q variant exists for automotive applications. This specific model is designed for handheld communication equipment requiring efficient power regulation.

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

AP7343-105FS4-7B serves as a package alternative using X2-DFN1010-4. AP7343D-105W5-7 provides the same electrical specifications but includes an auto-discharge feature on the output. Verify pin compatibility and thermal dissipation requirements when substituting between these variants.