Power chip

If it is used in wireless charging, it is best to set the duty cycle below 85% 2A synchronous step-down IC

DC buck regulator with adjustable output voltage range from 1.23V to 37V (57V for HV version) ±4%

BQ24125 Single-chip switch-mode, Li-ion and Li-polymer charge management IC with enhanced EMI performance

Simple Reset Power Supervisor IC with 4.65V Threshold Voltage

Power 10W Input Voltage Range 85-305Vac\n100-400Vdc Output Voltage/Current (Vo/lo) 15V/0.66A Efficiency % 82

The power supply voltage of the reset chip is 4.8V to 5.5V, the reset high and low levels are valid, the number of monitored voltages: 1, with 200ms reset delay output, power failure monitoring, power-down detection, manual reset input, power-on detection and other functions, reset Threshold voltage 4.4V, built-in 1.25V comparator, can be used to monitor the low voltage of the battery, can be used in computers, controllers, battery-powered equipment, portable equipment and wireless communication equipment, etc.

LP2981-N Micropower 100 mA Ultra Low Dropout Regulator with SOT-23 encapsulation