Part Number: LM3492 Hi,
From LM3492 datasheet it stated
driving two individually dimmable LED strings with a maximum power of 15 W and an output voltage of up to 65 V.
What will happen if, I drive 2 string with 10 LED each, 6.2V x 20 = 124V (125mA driving…
Part Number: LM3492AR111DEMO Hello ,
I am designing a luminaire using LM3492 to drive four strings of duris S5 white LEDs ( LED VF is 6.1V and IF is 125mA). Currently i'm implement the configure 4S4P to LM3492AR111DEMO board and at 12VAC i can get the correct…
Part Number: LM3492 Hi, team
Can DIM pin be connected with VCC directly?
Because the absolute maximum rating of DIM1 and DIM2 pin are 6V, but the maximum of Vcc is 6.3V.
Best Regards,
Part Number: LM3492-Q1 Other Parts Discussed in Thread: LM3492 Hi All,
I am using LM3492-Q1 in my design as a LED backlight driver. As per my application the backlight requirement as follows:
LED string current: 280mA
Total no of strings:1
Output voltage…
Part Number: LM3492 Hello! I make the scheme, what use in DRL. I use two serial string of LED (12 LED in string, 150mA for one LED). Input voltage 12-14 V. I make the schematic, shown below. I get the big problem: if I try programming controller, and…
Other Parts Discussed in Thread: LM3492 Hello,
I' d like to implement UVLO function with LM3492.
Vin = 12V, VIN(EN) = 8.0V target,
so I choose REN1=10k ohm, REN2=2.6k ohm. To cost reduction, I do not place DEN diode.
Is this reasonable selection ? …
Other Parts Discussed in Thread: LM3492 Hi all LM3492 has two output. My customer would like to use Vout1 only. So I would like to know how to treat unused Vout2 pin. Best Regards, Sho
Other Parts Discussed in Thread: LM3492
It based on the reference circuit
XT1.1 - 12.5V or XT1.2 and pwm_control_dxo - 12.5V
VOUT - 22V
IC pin 15 - 12V
IC pin 16 - 8V
R5 And R6 - not installed
But between XT2.1 and XT2.3 or XT2.2 and XT2.3 -- 0V
…
Other Parts Discussed in Thread: LM3492 , LM3492HC For the LM3492 a dimming ratio of 1:1000 for a DIM frequency of 3 KHz is mentioned in the datasheet. It it safe to state that a ratio of 1 : 10000 is also possible at a frequency of 300 Hz ? The minimum LED…
Other Parts Discussed in Thread: LM3492HC , LM3492 It is not clear what happens if resistor Rfb1 is too high or even is an open circuit.
Q1 : What then becomes the value of Vout and can this (possibly too high) value damage the LM3492HC ?
Q2 : Is the ov…