Part Number: LM2759 In LM2759 datasheet i have some doubt regarding the given information,
FLASH TIME-OUT FEATURE Time-out Protection Circuitry disables the current sink when either the Strobe pin is held at logic high or the Flash mode is enabled via…
Part Number: LM2759 Hi,team
My customer has a question.
The LED current sink accuracy is only specified at 220mA flash mode in the datasheet.
Could you please tell the accuracy for torch mode 15mA?
Thank you.
Part Number: LM2759 I am designing a led driving circuit for LED Luxeon LXML-PWC2. LXML-PWC2 forward voltage is 3.1V at current 1A. 5V input voltage will be used. Strobe signal will be 30Hz. In this case, I would like to know how the driver behave at…
Part Number: LM2759 Other Parts Discussed in Thread: LM3648 Hello, I have questions about I2C of LM2759.
(1) I2C specification In the datasheet, there is few I2C timing specifications only. Can we use this device on the following I2C specification which…
Part Number: LM2759 Hello,
I have some questions about LM2759.
(1) Sequence of Torch mode Our customer use LM2759 with I2C control only (not use TX and STROBE pin) and use Torch mode only (not use Flash mode). Could you please let me know the recommended…
Other Parts Discussed in Thread: LM2759 Hi,
I wonder why can't control output current and timeout duration in using LM2759.
I have designed circuit that is same circuit in datasheet.
I have succeed that write/read register(addr : 0x10, 0xa0, 0xb0…
Hello,
Without seeing a current waveform I will have to guess what is going on. To me it sounds like you are trying to drive an IR LED at a pulse that is too fast for the LM2759 to support at high currents. At light currents the device only has to ramp…
Part Number: LM3648 Other Parts Discussed in Thread: LM36010 , LM2759 Hi Sir,
If the LM3648 is in thermal shutdown, even if the die temperature is lower than 150°C, the LM3648 is not available for operation until there is an I2C read of the Flags1 Register…
Greg,
Thank you for your reply. LM3648 will be a better solution from the data sheet description. But from the data sheet, I can't see exactly how fast the response of LM3648 is. Will LM2759 have similar repeated pulse on/off performance as LM3648? …
