AP7343D-13FS4-7B

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

The AP7343D-13FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.3V 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 an integrated discharge function for rapid output voltage decay upon shutdown, ensuring efficient power management in portable applications.

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

• Integrated resistor network provides precise fixed output voltage options with ±1% accuracy.
• Built-in N-channel auto-discharge rapidly removes stored charge from the output capacitor when disabled.
• CMOS-based architecture ensures ultra-low quiescent current consumption for extended battery life.
• Includes comprehensive protection mechanisms such as thermal shutdown and fold-back short-circuit current limiting.

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

• Smart phones and tablets
• RF power supplies
• Portable cameras
• Wireless communication adapters

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

Verify the specific suffix '7B' corresponds to the X2-DFN1010-4 package type and tape-and-reel quantity configuration. Confirm that the 'D' designation indicates the inclusion of the output discharge feature, which differs from non-discharge variants. Ensure compatibility with RoHS 3 and halogen-free environmental standards required for the target assembly process.

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

Select this component when a compact footprint is required due to its small X2-DFN1010-4 package dimensions. Choose the discharge variant if fast turn-off times are necessary to prevent load hold-up issues. Verify that the 1.3V output aligns with the downstream circuit requirements and that the 300mA capacity meets peak load demands without exceeding thermal limits.

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 equipment. The series offers various fixed output voltages ranging from 0.9V to 3.6V. The 'D' prefix specifically denotes versions equipped with an internal discharge resistor, while the FS4 suffix identifies the X2-DFN1010-4 surface-mount package option.

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

AP7343-13FS4-7B serves as a direct functional substitute if the output discharge feature is not required in the design.