Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Part Number: LM3405 Tool/software: Hello：
If PWM adjustment is not required for LM3405, first connect the EN pin to GND and turn off this function. If I only need to turn it on and off, then I can connect the switch button to the power input terminal…
Part Number: LM3405 Hi team,
My customer has experienced some ICs don't illuminate LEDs. When the customer checks the output of SW pin, there is no switching on SW pin. The customer's IF setting is 220mA. Are there any reasons LM3405 doesn't illuminate…
Part Number: LM3405A Other Parts Discussed in Thread: TPS92391 Hi,
we need a constant current drive for our LCD project. The backlight spec is IF=200mA, VF=9V--10.2V. LM3405A datasheet says: Drives up to 5 High-Brightness LEDs in Series at 1A. because…
Part Number: LM3405 Other Parts Discussed in Thread: LP5012
Hi Team, We want to use a constant current buck converter driver in one of our products. We are planning to use LM3405 as the driver. The purpose is to drive a shape memory valve of rated power…
Part Number: LM3405 Tool/software: WEBENCH® Design Tools Hello Team ,
We are planing to Use LM3405AXMKX/NOPB as IR Buck but we are not able to generate the design for this
Below are operating condition :
1.No of IR LED : 2
2.IR LED Forward Volta ge : Min…
Part Number: LM3405 My customer's application is rather sensitive to cost than it is to efficiency. Aside from heat dissipation, what are the risks in using regular diodes for the circuit instead of the recommended Schottky diodes from our datasheet?…
Part Number: LM3405A Other Parts Discussed in Thread: TINA-TI , LM3405 , LM3406 Tool/software: TINA-TI or Spice Models Hi,
How is it possible to do a simulation running the LM3405 when there is no model for it?
Part Number: LM3405 Hi
My customer would like to know the mean in the description of datasheet 7.3.5 of LM3405.
The last sentence says "The dimming ratio reduces drastically when the applied PWM dimming frequency is greater than 5kHz."
Does…
Part Number: LM3405 Hi. I'm using the LM3405 in the configuration as displayed on the first page of the datasheet (first image below)).
Vin = 12V, and I have only 1 LED with Vf = 3.5V @ 1A.
A few things that I noticed:
1. With the LED disconnected…
Part Number: LM3405 Dear all,
What is the ratio of rippple current to LED current at 0.2A with 4.7uH?
At Table 1, you mention about indictance value (10uH, 15uH and 22uH) and ratio at 0.2A contidion.
How about 4.7uH condition?
Best regards,
