AP7343-31W5-7

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

The AP7343-31W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 3.1 V. It operates within an input voltage range of 1.7 V to 5.25 V and supports a guaranteed output current of 300 mA. The device features high power supply rejection ratio (PSRR) of 75 dB at 1 kHz and low output noise of 60 µVrms from 10 Hz to 100 kHz. Quiescent current is typically 35 µA. It utilizes SOT-25-5 packaging and includes thermal shutdown and short-circuit protection.

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

• Integrated enable pin for precise power management control
• High ripple rejection capability for clean power delivery
• Low output noise performance suitable for sensitive circuits
• Built-in thermal shutdown and fold-back current limiting

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

• RF supplies
• Cameras
• Portable media players
• Wireless communication devices

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

Verify the specific suffix W5 corresponds to the SOT-25 package and the -7 indicates tape and reel packaging. Confirm the 'Blank' discharge designation matches system requirements, as this variant lacks internal output discharge. Ensure compatibility with RoHS and halogen-free standards if required by the target application environment.

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

Select this component when a stable 3.1 V rail is needed with minimal footprint in portable electronics. Consider the non-discharge feature if holding output voltage during shutdown is acceptable. Evaluate thermal dissipation capabilities given the 400 mW power dissipation limit in the small SOT-25 package under varying load conditions.

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

This part belongs to the AP7343 family of CMOS LDO regulators designed for low-power handheld equipment. It shares core electrical characteristics with other voltage variants in the series but differs in fixed output settings and package options like X2-DFN1010-4. The family emphasizes high PSRR and low quiescent current for battery-operated applications.

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

AP7343D-31W5-7 offers identical electrical specifications but includes an integrated output discharge resistor for faster shutdown times.