AP7343-25FS4-7B

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

The AP7343-25FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 2.5V with a maximum guaranteed output 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 an enable pin for shutdown control, thermal shutdown protection, and short-circuit current limiting. It is housed in an X2-DFN1010-4 package.

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

• Integrated enable pin allows for precise power management and system-level shutdown control
• High ripple rejection and low output noise ensure clean power delivery for sensitive RF circuits
• Built-in thermal shutdown and fold-back short-circuit protection safeguard against overcurrent conditions

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

• RF power supplies
• Smartphones and tablets
• Portable media players
• Wireless communication adapters

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

Verify the specific ordering suffix FS4-7B corresponds to the required X2-DFN1010-4 package and non-discharge configuration. Confirm that the fixed 2.5V output aligns with the target circuit design requirements before procurement. Ensure compatibility with RoHS 3 compliance standards if applicable to the manufacturing region.

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

Select this component when a compact footprint is required for portable applications. The 2.5V fixed output eliminates external resistor networks. Consider the 300mA current capability and low quiescent current for battery-operated devices requiring efficient power regulation under varying load conditions.

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

This part belongs to the AP7343 family of low dropout regulators designed for handheld communication equipment. The series offers various fixed output voltages ranging from 0.9V to 3.6V. The FS4 suffix denotes the X2-DFN1010-4 package type, which provides a small surface-mount footprint suitable for dense PCB layouts.

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

AP7343-25W5-7B serves as a package alternative in SOT25 format. For automotive applications, verify availability of the AP7343Q series variants which meet specific automotive reliability standards.