Other Parts Discussed in Thread: LM3492HC
Hello,
We've made a design for a LED driver for 2 x 10 Leds with the LM3492HC, based on the reference design in AN-2231.
Unfortunately when we connect Vin supply of 12V, we get not output voltage at all at…
I would like to confirm the operation in the case of "short".
I LED: 56mA (each line)
LED: 5series, Vout (for LED) = about 17V (VF = 3.4V)
In this case, the short occured in one line and Vout changed from 17V to 24V.
Is this correct operation…
Other Parts Discussed in Thread: LM3492HC , LM3492 For a LED backlight design a LM3492HC is used to drive 2 LED strings with 17 LEDs per string. The nominal LED current is 100 mA and the LED forward voltage is 2.91V at 100 mA. The input voltage for the…
Other Parts Discussed in Thread: LM3492HC , LM3492 For a LED backlight design a LM3492HC is used to drive 2 LED strings with 17 LEDs per string. The nominal LED current is 100 mA and the LED forward voltage is 2.91V at 100 mA. The input voltage for the circuit…
I would like to confirm the threshold for IOUT OVER/UNDER VOLTAGE INDICAITON.
For 0ver Voltage, the specification is VIOUT-OV. Is it correct?
And for Under Voltage, the conditons are minimum required voltage can regurate ILED and maximum CDHC pin voltage…
Other Parts Discussed in Thread: LM3492HC I have a question of the LED open detection for LM3492HC.
Does LM3492HC have this function?
Is ILED over voltage indication equivalent to LED open detection?
Best regards,
Atsushi Yamauchi
I would like to confirm EN pin voltage.
I can not find the specification of EN pin volltage maximum rating.
How much is it?
There is the possibility of the supply voltage 5.2V.
Best regards,
Atsushi Yamauchi
Other Parts Discussed in Thread: LM3492HC-Q1 I would like to confirm the switching frequency of LM3492HC-Q1.
In the datasheet 10 page, there is the figure RRT vs switching frequency.
What is the condition for the figure? Does the frequency change with the…
Other Parts Discussed in Thread: LM3492HCEVM I would like to confirm LM3492HCEVM, because the customer wants to consult the thermal design.
1. What is the material of the substrate? Is it FR4?
2. How many is the layers? I think the EVM has 2 layers. Is…
Other Parts Discussed in Thread: LM3492HC-Q1 , LM3492-Q1 I wolud like to confirm the thermal resistance of LM3492HC-Q1.
The customer wants to know it.
1. theta jc (junction to bottom (power pad))
2. theta ji (junction to lead)
Best regrds,
Atsushi Yama…