AP7343-25W5-7

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

The AP7343-25W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 2.5V output with a guaranteed maximum current of 300mA. It operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz alongside low output noise of 60µVrms from 10Hz to 100kHz. The device incorporates CMOS technology for low quiescent current consumption of 35µA and includes integrated enable control, thermal shutdown, and short-circuit protection. It is housed in a compact SOT-25 surface-mount package suitable for dense PCB layouts.

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

• Integrated enable pin allows precise on/off control and reduces standby power consumption when disabled.
• High ripple rejection capability ensures clean power delivery even under noisy input conditions.
• Low output noise performance supports sensitive analog and RF circuit requirements.
• Built-in thermal shutdown and fold-back current limiting protect the device during overload or overheating events.

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 suffix W5 corresponds to the SOT-25 package configuration required for your design. Confirm that the non-discharge variant matches your system's power-down state requirements, as discharge versions exist within the same family. Ensure input and output capacitor selections adhere to the stability guidelines provided in the datasheet to maintain regulation accuracy.

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

Select this component when a fixed 2.5V rail is needed with minimal static current draw. The SOT-25 package offers a small footprint ideal for space-constrained portable electronics. Consider the dropout voltage characteristics relative to your minimum input voltage to ensure proper regulation under all load conditions. Verify that the 300mA current rating meets the peak demands of the downstream circuitry.

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

This part belongs to the AP7343 series of low-dropout regulators designed for low-power handheld communication equipment. The series offers various fixed output voltages ranging from 0.9V to 3.6V. While the standard AP7343 is for general applications, an automotive-compliant version designated AP7343Q is available separately. The device utilizes a CMOS process to achieve high efficiency and low noise performance.

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

AP7343D-25W5-7 serves as a direct substitute if output discharge functionality is required instead of the non-discharge feature found in the base model. Other voltage variants within the AP7343 series share identical pinouts and packaging but provide different fixed output levels.