Part Number: TL4242-Q1
Attached is an X-Ray picture of a failed LED Driver (TL4242-Q1) from the top side. We observed that Pin 3 (GND) internal seems to have open circuit which seems to be common problem with past few years of return of more than 150…
Other Parts Discussed in Thread: TL4242 I'm working on a design using the TL4242 to drive a string of LEDs via a 12" cable. The IC and the RREF resistor will be local but the LEDs will be across the cable.
My questions:
Should I build in any filtering…
Other Parts Discussed in Thread: TL4242 Hello,
We've bought the TL4242 evaluation board to test with Wurth power leds ( datasheet - code 158353027) . Vf is 3.2V, If is 350mA, (can handle max 1A)
Testing the board with 6 leds in series mounted on…
Other Parts Discussed in Thread: TL4242-Q1 Hello,
According to the datasheet page 8, the status pin provides information of open load, overtemperature protection.
Could you please let me know the behavior of ovetemperature detect / report? If junction…
Other Parts Discussed in Thread: TL4242 Hi,
I have one question about TL4242.
In case of connecting Rrff=0.95 ohm, the constant current will be 200mA. If it occurs output short on this condition, how much flow the current?
Thanks in advance.
…
Other Parts Discussed in Thread: TL4242 Hello,
How to use the TL4242 for low LED current (<10 ma)?
The equation given in the datasheet (I=0.177V/Rext) is good only for Rext up to 10 ohms?
What is the equation for higher value of Rext?
What is…
Other Parts Discussed in Thread: TL4242 I have a customer (Raytheon) using the TL4242 LED driver. He is driving a single LED at 20mA, using a 9.1 ohm resistor for the current sense resistor. The LED forward voltage varies from 2.2 to 3.8 and the power…
