AP7343-10FS4-7B

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

The AP7343-10FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.0V output at up to 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 with low output noise of 60µVrms. The device utilizes X2-DFN1010-4 (Type B) packaging, ensuring minimal footprint for dense PCB layouts. It includes integrated current limit and thermal shutdown protection, maintaining operation across temperatures from -40°C to +85°C.

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

• CMOS-based architecture delivering high output voltage accuracy and low quiescent current consumption
• Integrated enable pin allows precise control over regulator on/off states without floating inputs
• Built-in short-circuit and thermal shutdown mechanisms protect against overcurrent and overheating conditions

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

• Smart phones and tablets
• RF supplies
• Cameras
• Portable videos
• Wireless communication devices

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

Verify the specific ordering suffix FS4-7B corresponds to the X2-DFN1010-4 package and tape & reel packing configuration. Confirm RoHS compliance and halogen-free status requirements match project specifications. Ensure EN pin drive signals meet threshold levels for proper enable/disable functionality during procurement validation.

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

Select this component when a compact 1.0V rail is required for low-power portable electronics. The X2-DFN1010-4 package offers superior thermal dissipation compared to SOT25 variants. Verify that input voltage remains above the dropout threshold under maximum load conditions 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 handheld communication equipment. The series emphasizes low power consumption and fast transient response. The AP7343-10FS4-7B specifically denotes the 1.0V fixed output version in the smaller DFN package format.

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

AP7343-10W5-7 provides identical electrical performance in the SOT25 package. AP7343D-10FS4-7B includes auto-discharge functionality not present in the standard AP7343 variant.