Part Number: LM3643 Hi,
We have some questions about LM3643 as listed below, would you share your inputs? Thanks!
If oe only need FLASH function but don't need Torch function, how should we connect Torch/Temp pin and STROBE pin?
How should we connect…
Part Number: LM3643 Hi team,
I would like to check if there is anyway to disable the timeout in LM3643?
For system validation purpose, designer would like to disable the timeout and measure the actual current flow into LEDs.
Regards,
Alex
Part Number: LM3643 Hi Support team
Customer has a few questions:
Section 9.3.3 talks about IR mode. Figure 27 is IR mode with Boost and Figure 28 is IR mode pass only. However the enable register only shows IR drive mode (Mode bits). Does the chip…
Part Number: LM3643 Hi Support team
My customer needs to modulate the drive of the LED. In their application, the led must be driven with 100mA or more, however that produces too much brightness. What they want to do is add a FET between the cathode and…
Part Number: LM3643 Other Parts Discussed in Thread: LM3410 Hi,
I want to drive a set of 4x high power LEDs at about 700mA (one at a time at i2c configurable current) using power from a single lithium cell (3.7V).
The LM3643 and LM3643b each driving two…
Part Number: LM3643 Dear all
As below link, it said using the LM3643/4/8 in an Inductorless, I have two questions about this application.
1. What about transfer efficiency in this application ? Is there any conversion efficiency curve ?
2. How long…
Part Number: LM3643 Hi Support team
Customer has the following question, I also have a power point i can share via email
We would like to significantly speed up this white LED current response time. Perhaps there is a way? Are there any top secret registers…
Part Number: LM3643 Hi Support team
This is related to one of my previous questions, customer is asking for minimum input and output capacitance for stability, thanks Jeff Coletti
Part Number: LM3643 hi, This is Martin from Intel Shanghai, we use LM3643 in Intel reference design to drive camera flash led. from datasheet, it support GPIO HW trigger in torch mode, if no GPIO is available for torch, can LM3643 support I2C trigger to…