Fs5383a lithium battery 3.7V input power supply solar lawn lamp drive IC

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FS5383A Is a lithium battery powered solar lawn lamp drive IC, Support solar energy LED Drive control chip , apply On 3.7V Solar products powered by lithium-ion batteries . FS5383A Internal integration LED Constant current drive control circuit , Lithium battery overcharged Protection and over discharge protection circuit . The controller has high conversion efficiency , The highest Can be up to 90%, It can reduce the power requirements of solar panels . At the same time It has the characteristics of adjustable output current . FS5383A Adopt environmentally friendly SOT23-5 Package and at least 2 Peripherals The device can effectively reduce the circuit PCB Board space .FS5383A It is a solar lawn lamp control chip , Applicable to single section 3.7V Solar lawn lamp powered by lithium ion battery . The main functions are LED Constant current drive 、 Charge control 、 Light control 、 Overcharge protection , Over discharge protection, etc . Charge discharge and enable control SOL The pin is externally connected to the positive pole of the solar panel ,BAT The pin is connected to the rechargeable battery Positive pole , During the day, solar cells convert sunlight into electricity , Charging the battery , Night battery discharge drive LED. When SOL The voltage is below 0.50V when , Equivalent to night , Turn on LED Light up , When SOL The voltage is higher than 0.90V when , The chip enters the daytime state , close LED, So as to realize the light control function , It turns off automatically during the day LED, It turns on automatically at night LED. This function does not affect SOL Yes BAT Charging function . Over discharge and over charge control When the voltage of lithium battery is lower than 2.7V, Will shut down LED The lamp , When the battery is charged Press to 3.3V. It will turn on again LED The lamp . During daytime charging , When the battery voltage reaches 4.2V when , Stop charging , prevent Prevent battery overcharge . Output current regulation and sampling resistance selection FS5383A It is a constant current drive and control chip . Its output current consists of The formula obtains .

characteristic Input voltage range :2.7V to 4.2V It's as efficient as 90% Overcharge protection function Over discharge protection function The battery voltage is as low as 0V Can charge Enable to have Schmidt characteristics , Ensure stability when light turns dark Maximum 500mA Solar charging current LED The current can be adjusted by resistance （0~300mA） Optional SOT23-5 encapsulation

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Range of application  3.7V Application of lithium ion battery products  3.7V Lithium ion battery solar lawn lamp  Solar landscape lighting  3.7V Lithium ion battery solar lamp string

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