MOC3083M is an optocoupler integrated block; The CN3083 is a single lithium battery charge management chip that can be powered by solar panels. It includes a power transistor inside and does not require external current-detecting resistors and choke diodes for application.
Its internal 8-bit analog-to-digital conversion circuit can automatically adjust the charging current according to the current output capacity of the input voltage source, and users do not need to consider the worst case, which can maximize the use of the current output capacity of the input voltage source, which is very suitable for lithium battery charging applications that use the current output capacity of the solar panel and other limited voltage sources.
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The CN3083 requires very few peripheral components and conforms to the USB bus technical specification, making it ideal for portable applications. The heat modulation circuit can control the chip temperature within the safe range when the power consumption of the device is relatively large or the ambient temperature is relatively high.
The internal fixed constant voltage charge voltage is 4.2V, which can also be adjusted by an external resistance. The charging current is set through an external resistor. When the input voltage is lost, the CN3083 automatically enters the low-power sleep mode, and the current consumption of the battery is less than 3 microamps. Other features include low input voltage latching, automatic recharging, battery temperature monitoring, and charge status\/charge end status indication. The CN3083 uses a heat-enhanced 8-pin small form factor package (SOP8).
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I. Functions and features of CN3083
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* Internal integration of 8-bit analog-to-digital conversion circuit, can automatically adjust the charging current according to the current output capacity of the input voltage source
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* Lithium battery charging applications that can be powered by voltage sources with limited output current capacity, such as solar panels
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* Input voltage range: 4.4V? Arriving? 6V
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* Continuous constant current charging current can be set up to 600mA
Solar street lamp circuit board, with automatic control of light and no light function. There is a photoresistor on the circuit board as a sensor. This photoresistor, when the light, the photoresistor resistance value changes, gives a signal to the control board, the control board controls the light on, off the light.
If you remove the automatic lighting function, it is actually very simple, on the control board, the circuit connecting the lamp beads, a switch is connected in series.