The MAXIM Mobile Power Product Guide catalog is as follows: Charger, battery monitor and USB management multifunction PMIC A fuel gauge that accurately reports the state of charge (SOC) of the battery, effectively extending battery life ModelGaugeTM algorithm eliminates the need for current-sense resistors and other external components, reducing cost and space Small Spray Water Atomization,Small Spray Water Atomization Filter Mesh,Small Spray Filter Mesh SHAOXING HUALI ELECTRONICS CO., LTD. , https://www.cnsxhuali.com
Single-function step-up/step-down DC-DC/LDO
WLED flash power supply
WLED display power supply 
· Simplify design and reduce implementation cost · Reduce component space by saving less board space · Eliminate calibration and simplify production process · Industry's lowest supply current (50μA, typical), greatly extending run time · Low battery voltage alarm helps Extend battery standby time and simplify software design. The above is part of the MAXIM Mobile Power Product Guide. See the PDF document for complete content!