Need help with LM3886

pradeeppk · 02:22 PM

Hi,
I have purchased 3 no.s of LM3886, when i'm checked the ic with multimeter all the ic shows low impedance (010) between pins 2nd, 4th and 7th. is that a normal value ..?

pranam77 · 7th October 2010, 02:27 PM

Download the device datasheet and have a look at the application circuit and the Pin descriptions. Your doubt will be cleared. As you are in India, you must be aware that most markets sell Duped products to make money. Mean re-printed components are common.

pacificblue · 10th October 2010, 07:32 PM

pin 2 should open circuit against all other pins, because it is not connected. Pin 4 is negative power supply and pin 7 GND so definitely no low impedance there.

7th October 2010, 02:21 PM	#1
pradeeppk diyAudio Member Join Date: Oct 2009	Need help with LM3886 Hi, I have purchased 3 no.s of LM3886, when i'm checked the ic with multimeter all the ic shows low impedance (010) between pins 2nd, 4th and 7th. is that a normal value ..? Last edited by pradeeppk; 7th October 2010 at 02:22 PM. Reason: mistake..

10th October 2010, 07:32 PM	#3
pacificblue diyAudio Member Join Date: May 2008	pin 2 should open circuit against all other pins, because it is not connected. Pin 4 is negative power supply and pin 7 GND so definitely no low impedance there. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

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7th October 2010, 02:27 PM	#2
pranam77 diyAudio Member Join Date: Aug 2009	Download the device datasheet and have a look at the application circuit and the Pin descriptions. Your doubt will be cleared. As you are in India, you must be aware that most markets sell Duped products to make money. Mean re-printed components are common.

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