Description 5252F is a solar LED lighting fixtures for ASIC design. It is driven by a switching circuit, Optical switch circuit, over discharge protection circuit, the internal integration of Short Based diodes and other circuit.
5252F Datasheet PDF Solar LED driver IC DataSheetCafe from 9753 led driver ic datasheet, source:www.datasheetcafe.com. Marvelous Stocks Of 9753 Led.
Can be only one external inductor Composition of solar lighting devices. 5252F using patented technology, LED Undervoltage shutdown makes no blinking LED lights. Pinout The 5252F integrated circuit does several things.
It charges the 1.2 volt battery during the day, using power from the 2.5 volt solar cell. It detects when the solar cell is in the dark, and starts up the circuit inside that boosts the 1.2 volts from the battery to over 3 volts, and sends that to the LED. The output voltage is pulsed. The current is limited by the L1 inductor, 330 microHenrys will allow 8 milliamperes to go into the LED. Reducing the size of the inductor to 270 microHenrys will give 10 milliamperes. Funtions 1.
Operating voltage: 0.9V-1.5V 2. Output current: 3mA-300mA 3. Patented over-discharge protection: no flash off 4. Integrated light control switch 5. Integrated Schottky Diode 6. Only one inductor external components Reference Site 5252F PDF File .
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Is it a modular system such as: Arduino, Raspberry Pi, Teensy, Beaglebone, ESP8266 etc. And you need help hooking up power, I/O modules, sensors, motors, LED strips etc.: FIRST try one of the board-specific subs; there's a list on our wiki page. Identifying an electronic component in an electronic assembly. For a device you found in a dumpster, or that you want to know how much you should sell for on eBay, please ask in. You can also add a flair tag for your username with your area of expertise by clicking on the 'edit' button at the top. I recently bought a 36 LED lit 'branch' that is currently solar powered. I was wondering what the best way to convert it to run only on battery power.
I opened up the box where the electronics are housed and it looks like theres: AA Ni-Cd 600mAh 1.2V battery 47 ohm resistor 5252f chip (googling this said that it was an LED driver, functionally equivalent to QX5252, turns the lights off when it's too bright). I'm guessing the 5252 chip is also amplifying the voltage from 1.2 volts to around 3v, so can I just connect two AA batteries in series, connected to a resistor to power this thing? Any complications I need to worry about? I don't have to have it last too long. The LED driver chip is putting out the current the LEDs need from a lower voltage like a 1.2V battery.
It will likely also work from 1.5V alkaline, as the solar panel would be charging up the batteries, so it is a boost current source that works from a range of input voltages (probably from like.8V to 1.5V maybe). (You didn't say, are the NiMH batteries in there in parallel, or 2 in series?) You would have to have more information on how they use the solar cell to turn on the lights. Does it have a CdS photocell to detect light? Or just use the solar panel? It may be that covering the solar panel turns on the LEDs. If that is the case, just remove the solar panel, and put in a battery. There aren't any components other than the one NiMH battery (so nothing in parallel or series), the solar panel, resistor, and the 5252f chip.
Covering the solar panel turns on the LEDs like you said. I believe the 5252f detects low voltage from the solar panel when the panel is covered/dark, then switches on the current needed for the LEDs. (This is mentioned in the pdf I have linked up there) So instead of having the the driver chip putting out the current need for the LEDs, can I just have two 1.5v batteries connected in series (so 3v combined obviously), therefore taking the 5252f out of the equation?