220v转9v空气加湿器控制芯片电路

1、加湿器驱动IC芯片输入电压为4.5 V（电池3节）
2、有3路PWM输出推雾化器，有3路黄光LED电平输出分别指示雾化片。
3、加湿器芯片上电不工作，有一个ON/OFF按键开关控制，触发一下有三组雾化器同时工作，工作30分钟停止，重新触发重新计时30分钟工作。工作中触发开关，则停止工作，重新触发重新工作。LED随雾化片同步工作。

那么怎么把家用的220v液晶显示芯片工作电压4.5v-5.5v,工作电流2MA(5V）非隔离220v转4.5v芯片，宽电压输入整流后稳压4.5v输出。

1. The input voltage of the humidifier driver IC chip is 4.5 V (3 batteries)

2. There are 3 channels of PWM output to push the atomizer, and 3 channels of yellow LED level output to indicate the atomizer.

3. The humidifier chip does not work when powered on, there is an ON/OFF button switch control, triggering three groups of atomizers to work at the same time, stopping after 30 minutes of work, and re-triggering to re-time 30 minutes of work. When the switch is triggered during work, it will stop working and re-trigger to work again. The LEDs work synchronously with the atomizer.

So how to put the working voltage of household 220v LCD display chip from 4.5v to 5.5v, and the working current of 2MA (5V)