DIOAP7331-18WG-7
Overview
The AP7331-18WG-7 is a 300mA low dropout (LDO) linear regulator that provides a fixed 1.8V output from an input voltage range of 2V to 6V. It is designed with a high-speed response to line and load transients, making it suitable for noise-sensitive digital and analog circuits. The device includes integrated protection features such as current limiting, short-circuit protection, and thermal shutdown to ensure system reliability.
Why Choose This Part
This regulator is stable with low ESR ceramic output capacitors as small as 1uF, reducing total PCB BOM cost and area. It features a low quiescent current of 65uA and a shutdown current of just 1uA, extending battery life in portable applications. The wide 2V to 6V input range allows for operation from 1-cell Li-ion batteries or 5V USB rails.
Applications
Key Specifications
Getting Started
To implement this LDO, place a 1uF ceramic capacitor as close as possible to both the VIN and VOUT pins relative to the ground plane. Ensure the EN pin is pulled high for operation or low to enter the ultra-low current shutdown mode. For high-current loads, calculate the thermal rise based on the SOT-25 package's thermal resistance to prevent hitting the thermal shutdown threshold.



