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The low power consumption super bright LED increasingly widespread application, also because of the high power LED cooling, the impact of factors such as price, and advances in technology LED to lm / watt improvement in many areas have low power LED to replace the high power LED Trend.
The traditional use of the current limiting resistor driven more and more obvious shortcomings, cooling, energy-consuming problem of winding each design, the IC is designed for this application, the LED driver in the series number of input voltage 220VAC, And red super bright LED, can reach up to 110, the chips input voltage for 85 V to 240V, constant current output, constant current value set by external resistance. The chip periphery circuit, with simple, non-inductive, non-transformers, circuit component of the small size, can be embedded within the small size of LED lamps.
At present this series of three chips to choose from: HA22002PB, input 85-240VAC, constant current 20mA output. HA22004PB, input85-240VAC, constant current 40mA output, HA22006PB, input85-240VAC, constant current 60mA output. LED driver specific number and types of chips please refer to the datasheet.
Tip:
In comparison to the stability requirements of the use of martial law, can be in each LED on the parallel connection of a zener diode, so an LED died couldn’t affect all of the LED.
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