Part Number: LM3508 Other Parts Discussed in Thread: LM3509 Dear support member,
My customer used LM3508.
I have question about calculation formula.
LM3508 datasheet 14 page formula 9 include Inductor.
LM3508 same series LM3509 datasheet 22 page formula…
Other Parts Discussed in Thread: LM3509 We have an LM3509 driving two sets of two white LEDs.
With L = 4.7 uH and C = 2.2 uF, we had the output voltage at 21.3 V and the LM3509 got hot (over 50 C)
Switching to L = 4.7 uH and C = 22 uF, the output voltage…
Other Parts Discussed in Thread: LM3509 Hello.
There is a Light mode and a frequency changes to LM3509. How many is the current value with which a frequency changes? Is there an arithmetic expression which takes a frequency out of the load electric current…
Other Parts Discussed in Thread: LM3509 Dear members
I will use LM3509 driver for white led.
According to datasheet, LED can be connected to driver by (Max)10[EA] per port (=Main, Sub).
If the LED Forward current is under 30[mA] , I think that LED can…
Other Parts Discussed in Thread: LM3509 Hello!
I want to use LM3509 in pure OLED mode, i.e. without MAIN current sink input. How should I connect MAIN pin, may it be left open?
There is a note on the datasheet pg. 21: "To avoid dropout and ensure proper…
Other Parts Discussed in Thread: LM3509 Hi,
The data sheet for the LM3509 indicates the device comes in a 10 pin WSON 3x3 0.8mm package. I've been unable
to find any further details on this package and recommended pcb footprint. Any signposts to where…
Other Parts Discussed in Thread: LM3509 Hi
I will use LM3509 with dual white LED Mode.
But I have a question about LM3509.
Specificaiton mentioned Max 30mA/Per string using Rset but There is no the information lower current setting using Rset.
I will LED…
Other Parts Discussed in Thread: LM3509 Dear all,
I will use LM3509 such as attached image.
I can't find minimum LED Q'ty per port in data sheet.
Is there a problem? (Condition, Main Port : LED 1[EA] , Sub/FB : LED 4[EA] , SET Pin=12KOHM, 20m[mA…