AP7343D-10FS4-7B

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

The AP7343D-10FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.0V 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 internal discharge functionality. Packaged in the compact X2-DFN1010-4 (Type B) format, it ensures low quiescent current consumption and high accuracy.

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

• Integrated resistor network provides precise fixed output voltage options.
• Built-in discharge circuit automatically discharges output capacitor upon shutdown.
• CMOS process technology enables low quiescent current and minimal footprint.

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 ordering suffix '7B' corresponds to the required tape and reel packaging quantity of 10,000 units per carrier. Confirm that the 'D' designation in the part number indicates the inclusion of the auto-discharge feature, as this distinguishes it from non-discharge variants. Ensure compatibility with the X2-DFN1010-4 (Type B) package dimensions during PCB layout verification.

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

Select this component when a 1.0V rail is required with high noise immunity and efficient space utilization. The integrated discharge feature simplifies system startup sequences by preventing floating outputs. Verify that the input voltage remains within the 1.7V to 5.25V range to maintain regulation. Consider the thermal resistance characteristics of the X2-DFN1010-4 package for heat dissipation requirements under maximum load conditions.

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

This device belongs to the AP7343 series of low dropout regulators designed for portable electronics. The series offers various fixed output voltages ranging from 0.9V to 3.6V. The 'D' suffix specifically denotes the version with an output discharge function, while 'FS4' identifies the X2-DFN1010-4 (Type B) surface-mount package. It is part of Diodes Incorporated's portfolio of green, lead-free PMIC solutions.

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

AP7343-10FS4-7B serves as a direct functional substitute if the discharge feature is not required. For packages other than X2-DFN1010-4, consider AP7343D-10W5-7B which utilizes the SOT25 form factor. Ensure any replacement maintains the same output voltage accuracy and PSRR specifications for RF-sensitive applications.