AP7343D-31W5-7

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

The AP7343D-31W5-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 3.1V output with a 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. The device incorporates an enable pin for power control and includes built-in discharge functionality. Packaged in SOT-25-5, it supports operation from -40°C to +85°C.

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

• Integrated N-channel auto-discharge resistor to rapidly remove charge from the output capacitor when disabled.
• High ripple rejection capability ensures clean power delivery for sensitive RF and communication circuits.
• Low quiescent current consumption extends battery life in portable handheld devices.
• Built-in thermal shutdown and fold-back current limit protect against overheating and short circuits.

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

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

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

Verify the specific suffix 'D' indicates the inclusion of the output discharge feature, distinguishing it from non-discharge variants. Confirm the 'W5' package code corresponds to the SOT-25 form factor required for your PCB layout. Ensure the ordering quantity aligns with the standard tape and reel packaging specifications provided by the manufacturer.

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

Select this component when a fixed 3.1V rail is required with minimal footprint constraints. The SOT-25 package offers a compact solution suitable for dense layouts. Consider the internal discharge feature if rapid output voltage decay is necessary upon shutdown. Verify that the input voltage remains within the specified operating range to maintain regulation accuracy.

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

This part belongs to the AP7343 series of CMOS low dropout regulators designed for low-power applications. The series provides various fixed output voltages ranging from 0.9V to 3.6V. The 'D' suffix specifically denotes the version with an integrated output discharge resistor, while 'W5' identifies the SOT-25 surface-mount package type used for space-efficient designs.

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

AP7343-31W5-7