Part Number: LM3407 Other Parts Discussed in Thread: TPS92200 Hello TI-Team,
we need to power a backlight of an Display with the following specs:
Vin=24VDC
Backlight: Vf=19,2V If=40mA 2 LED strings á 6 LEDs
I thougt, the LM3407 might be a good choice…
Part Number: LM3407 I have an LM3407 design that operates at low current. The inductor was chosen based on the datasheet equations and verified with the design calculator. The sense resistor waveforms look appropriate, and the current has been measured…
Part Number: LM3407 Hi,
We have the following design developed using Webench, and now implemented in our PCB. However, it doesn't appear to provide any voltage at all to the LED back light I am using.
Our implmentation matches the schematic, am I…
Part Number: LM3407 Hello,
I have a customer that is looking at the LM3407 and it is not clear what the maximum string length for the LEDs is. The picture on the first page shows "1 to 7 LEDs" but then it says the output voltage range can be 90% the input…
Part Number: LM3407 Using the LM3407 at low current setting (60mA, maybe lower). We would like to increase the inductor value to 47uH to stay in continuous conduction. Datasheet recommends 22uH and 4.7uF output C. Any concerns (stability or otherwise…
Part Number: LM3407 I'm new to LED buck drivers. If I have an input voltage that is higher than the LED voltage, does the LM3407 drop the extra voltage internally? Or does it step down the LED driving voltage so that there is no extra voltage to drop…
Part Number: LM3404 Other Parts Discussed in Thread: LM3407 , LM3401 , Hi,
Customer want to know if there is any available calculation tool for this IC that they can used?
I can only find the following design calculation for LM3401 and LM3407
https://www…
Part Number: LM3407 I would like to confirm Cvcc for LM3407.
In the datasheet page 18, the recommended value of Cvcc is 1uF with X5R or X7R, but in page 3, "minimum" value for bypass capacitor is 1uF.
I have questions.
1. Are there any problem…
