Other Parts Discussed in Thread: LM3431 Dear Sir,
I have a question about Type 1 fault of LM3431, according to datasheet page 22, it mentioned that For a Type 1 fault, the LM3431
will continue to regulate, although the DLY pin remains high. In this condition…
Other Parts Discussed in Thread: LM3431 Dear Sir,
we are encountering a LM3431 power on issue, when we power on the power supply, LM3431 output voltage will shutdown after 10ms. once we increase the capacitor value of DLY to 1uF ( from 0.1uF to 1uF) then…
Other Parts Discussed in Thread: LM3431 Our LM3431 application specification Vin 9V~16V, Vout around=42v 140mA/ch*3=420mA when vin 9v, in=1.9A , currenst sensing resistor=25mohm , then we can hear the noise from the chock. but after increasing vin above…
Other Parts Discussed in Thread: LM3431-Q1 , LM3431 Hello
I have one question of LM3431-Q1
Can this device use below spec?
Vin=5V LED 6 series ×3string(Vf=1.5V) ILED= 500mA/ch
Regards
Tomohiro Nagasawa
Other Parts Discussed in Thread: LM3431 Hi,
I have problem with the starting up of the LM3431 LED driver and I want to check some components with the LM3431 component calculator for mathcad to see if they are okay. I downloaded mathcad express prime 3…
Other Parts Discussed in Thread: LM3431 Hi,
I am having a problem with the LM3431 LED Driver and I want to run some simulations, I tried to use webbench but I could not find the LM3431 device. I also found a previous post that describes the procedure to…
Hello,
Can we short DLY pin to GND?
Our customer would like to connect DLY to GND due to Led don't short and open in their system.
Are there any concern on this connection?
Best regards,
Ryuji Asaka
Hi,
I'm experiencing a problem with a product we've recently designed which sometimes produced audible noise at half the PWM dimming frequency (= 25KHz). It seems that if the falling edge of the 'DIM' input coincides with the falling edge of the switcher…
Other Parts Discussed in Thread: LM3431 Hello,
LM3431 has calculation tool of Mathcad.
Unfortunately , I don't have mathcad...
Thus, I tried simulation by webench.
But I can't get simulation result by below conditions.....
Could I have the result…
Other Parts Discussed in Thread: LM3431 My customer want use LM3431 for 6 string backlight.
Their request spec as below.
Vin=12V
Vout=30V( 10LEDs per string)
Iout=120mA per string
6 strings
but, they want know, when they used extra circuit for 6 LED string…
