stenzer
Advanced Member level 3
Hi,
I friend of mine gave me his "broken" LED flashlight. It is the BARBARIC from Martinez Albainox [1]. Unfortunately there are no informations at all, especially regarding the power and the charging voltage. My friend gave me a power supply which can be plugged into a cigarette lighter plug of an car, thus I assume it should be chargeable from a ~12 V source (which I also measured). This charger can be also partially be seen in [1].
I powered the flashlight with may laboratory bench-top power supply, and it already draws a current of about 1 A @ ~3.5 V (current increases with increasing voltage). I disassembled the flash light, here is a picture of the electronics.
It seems the IC 5501 got really hot, two cables have been melded together on top of this IC. This melting also created a short circuit of those two cables, which I have fixed. As can be seen on the attached figure, there is only a single IC.
The package is marked by KBG2z and the PCB label states 5501. After quite some time I came up with an IC called MIX5501, which seems to be a constant current source (which makes sense). The pin configuration fits with the installed IC, the following figure is taken from [2]. Unfortunately I couldn't find a dataseeht in english.
I'm measuring a short circuit between pin 4 and 6, and when I power the flashlight with the above mentioned ~3.5 V (~1 A) it is light up and the ON/OFF button has no effect. Thus, I assume the IC is damaged. According to the shown circuitry, the maximum IC supply voltage is 4.2 V.
The used LED seems to be a CREE XP-G [3], with a maximum forward current of 1.5 A.
My question is, is there an appropriate IC which can be operated at 12 V? Or is the 12 V power supply provided by my friend and also visible in [1] just not suitable? Has someone the datasheet of the MIX5501 in english?
BTW, the flashlight uses two 3.7 V 2000 mAh accumulators which are in parallel, and placed in parallel to the LED. I performed all measurements without the accumulators.
[1] **broken link removed**
[2] https://product.ic37.com/product/759328/
[3] https://www.cree.com/led-components/products/xlamp-leds-discrete/xlamp-xp-g
Greets and thanks for any advice!
I friend of mine gave me his "broken" LED flashlight. It is the BARBARIC from Martinez Albainox [1]. Unfortunately there are no informations at all, especially regarding the power and the charging voltage. My friend gave me a power supply which can be plugged into a cigarette lighter plug of an car, thus I assume it should be chargeable from a ~12 V source (which I also measured). This charger can be also partially be seen in [1].
I powered the flashlight with may laboratory bench-top power supply, and it already draws a current of about 1 A @ ~3.5 V (current increases with increasing voltage). I disassembled the flash light, here is a picture of the electronics.
It seems the IC 5501 got really hot, two cables have been melded together on top of this IC. This melting also created a short circuit of those two cables, which I have fixed. As can be seen on the attached figure, there is only a single IC.
The package is marked by KBG2z and the PCB label states 5501. After quite some time I came up with an IC called MIX5501, which seems to be a constant current source (which makes sense). The pin configuration fits with the installed IC, the following figure is taken from [2]. Unfortunately I couldn't find a dataseeht in english.
I'm measuring a short circuit between pin 4 and 6, and when I power the flashlight with the above mentioned ~3.5 V (~1 A) it is light up and the ON/OFF button has no effect. Thus, I assume the IC is damaged. According to the shown circuitry, the maximum IC supply voltage is 4.2 V.
The used LED seems to be a CREE XP-G [3], with a maximum forward current of 1.5 A.
My question is, is there an appropriate IC which can be operated at 12 V? Or is the 12 V power supply provided by my friend and also visible in [1] just not suitable? Has someone the datasheet of the MIX5501 in english?
BTW, the flashlight uses two 3.7 V 2000 mAh accumulators which are in parallel, and placed in parallel to the LED. I performed all measurements without the accumulators.
[1] **broken link removed**
[2] https://product.ic37.com/product/759328/
[3] https://www.cree.com/led-components/products/xlamp-leds-discrete/xlamp-xp-g
Greets and thanks for any advice!
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