AP7343D-25FS4-7B

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

The AP7343D-25FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a stable 2.5V output with a maximum current of 300mA. The device operates within an input voltage range of 1.7V to 5.25V and features high power supply rejection ratio (PSRR) of 75dB at 1kHz. Quiescent current is typically 35µA, with standby current as low as 0.01µA. Output voltage accuracy is ±1%. The component includes thermal shutdown and short-circuit protection. It utilizes the X2-DFN1010-4 (Type B) package.

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

• Integrated enable pin for precise power management control
• High ripple rejection capability for noise-sensitive applications
• Built-in discharge function for rapid output voltage decay upon shutdown

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

• Smart phones and tablets
• RF supplies
• Cameras
• Portable media players

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

Verify the specific suffix '7B' corresponds to the 10,000-unit tape and reel packaging configuration in the X2-DFN1010-4 (Type B) package. Confirm that the 'D' designation indicates the inclusion of the auto-discharge feature on the output pin. Ensure compliance with RoHS 3 and halogen-free requirements if applicable to the project specifications.

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

Select this component when a fixed 2.5V rail is required with minimal footprint constraints. The integrated discharge feature distinguishes it from non-discharge variants, making it suitable for systems requiring fast power-down sequences. Verify that the input voltage remains above the dropout threshold across the full load and temperature range to maintain regulation stability.

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. The 'D' variant specifically includes an N-channel auto-discharge resistor, while the 'FS4' code denotes the compact X2-DFN1010-4 (Type B) surface-mount package.

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

AP7343-25FS4-7B is the non-discharge equivalent within the same package family.