Part Number: LM2854 we are making use of the part number LM2854MH-500/NOPB for many of our projects.
w.r.t Exposed Pad -
1. How it should be soldered?
2. what if the switching regulator exposed pad is not properly soldered? does it affect the function…
Just to note this issue is still ongoing.
We have now seen 3 more failures making 6 so far in last few months.
We unfortunately didn't record the info earlier but the latest 3 chip markings are
55A6HNU, LM2854, -500
45A2KNU, LM2854, -500
45A2KNU…
Part Number: LM2854
Hello
My customer is using LM2854 and they use tss =approx 1sec.
Therefore, Css is around 14uF (10uF+4.7uF)
Is this accpeptable?
Would you please let me know the max. value for Css?
Best Regards
Other Parts Discussed in Thread: LM2854 When I used Webench to create a design for the LM2854 1000KHz given our requirements, it came up with component values that did not give a working implementation. The output was not the correct voltage and was unstable…
Other Parts Discussed in Thread: LM2854 Hello,
The LM2854 can operate at 1MHz or 500kHz. How can the 500kHz version of the LM2854 be run on WEBENCH? I even tried to use the 500kHz optimized parameters from the LM2854 datasheet (pg 22, Vin=5V, Vout=3…
Hello David,
The LM2852 core is the same as the LM2854. Therefore everything that Yang mentioned in the above post should apply to the LM2852 as well. Let me know if this information helps. What specific more information would you like on the devices…
Hello Karl,
Set the top feedback resistor to 150kohm (recommended value table 1 of the datasheet, page 18).
Set the bottom feedback resistor to 46.4kohm (this will get you 3.38V output).
Select Rcomp and Ccomp values based on your output capacitor…
Other Parts Discussed in Thread: LM3150 Hi,
I'd like to ask about the need of external ripple injection circuit for LM3150.
According to the attached PDF file page 14,
It saids that we need the external ripple injection circuit when the output voltage…
Hi,
I've attached the 2013 User's Guide for power products. Starting on page 53 you will find a selection of PWM controllers. many of these teh frequency can be varied according to external criteria.
As an example if you use a UC3842 it is a simple…
Gary,
Most any of our power controllers with dual output capability will provide the control. See attached document starting at page 50 with the dual output controllers on page 53 and 54 and choose what features you want.
Regards,
John
