AP7343-11FS4-7B

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

The AP7343-11FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a stable 1.1V 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 includes an enable pin for power management and offers ±1% output voltage accuracy. Packaged in the compact X2-DFN1010-4 (Type B) format, it supports surface mount installation and functions reliably across an ambient temperature range of -40°C to +85°C.

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

• Integrates an enable control pin to manage active operation and shutdown states
• Provides high ripple rejection performance suitable for noise-sensitive applications
• Includes built-in thermal shutdown and fold-back short-circuit protection mechanisms

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

• RF supplies
• Cameras
• Portable media players
• Wireless adapters

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

Verify that the specific part number matches the required output voltage and package type before ordering. Confirm compliance with RoHS and halogen-free standards if environmental regulations apply to the end product. Ensure the purchasing channel is authorized to guarantee component authenticity and traceability. Check for any recent product change notifications that might affect specifications or packaging details.

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

Select this component when a precise 1.1V rail is needed with minimal footprint constraints. The X2-DFN1010-4 package is ideal for dense PCB layouts where space is limited. Consider the enable pin functionality if system power sequencing requires external control. Evaluate the quiescent current requirements against battery life expectations for portable designs.

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

This device 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 FS4 suffix indicates the X2-DFN1010-4 package variant, distinguishing it from other package options like SOT25 available within the same functional family.

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

AP7343D-11FS4-7B