Part Number: UC2844A Hello,
I am an FAE for a distributor that handles TI products. I received a question from a customer about the variation in oscillation frequency of the UC2844AN. Main conditions are described below. (Question 1) Is it correct to use…
Part Number: UC2844A Other Parts Discussed in Thread: UCC28C44 Customer is confused why there is "no ambient temp range" shown on the Recommended Operating Conditions and also that Junction temp is only specified with -40degee to 105degree? Is there missing…
Part Number: UC2844A Hi Team,
Customer has several device questions needing your helps, pls help us here. Thanks.
1. What's the typical forward voltage drop for below red frame diode in the functional block?
2. How to get below equation 1.7V in theory…
Part Number: UC2844A Below is existing configuration for soft-start DR425:33K and DC422:10uF
In the d/s, it says the Rss and Css. is there application addressing how to calculate it?
Since the Vds peak voltage is too high during startup, we'd like…
Part Number: UC2844A Other Parts Discussed in Thread: UC2844 Hi,
Planning to make new SMPS design, previously had used UC2844 and external FET, in almost all of my Flyback converter design(20-60W) since last few years.
Input voltage range: 200VDC to 800VDC…
Part Number: UC2844A Hi Team,
My customer notice that for UC2844A UVLO "start threshold" and "minimum operation voltage after turnon", there's a min~max range, and they want to know is there any logic behind these values? Like the devices with 15V start…
Part Number: UC2844A Hi Team,
May I ask if we have the value of UC2844A RT/CT pin threshold voltage for the device to start oscillate?
I cannot find such value in the datasheet.
Thanks.
Best Regards,
Livia
Part Number: UC2844A Other Parts Discussed in Thread: UC2844 , , UC2843 , UC2843A , UC2842A , UC2842 , UC2845 Hi Team,
May I know what the difference between UC2844A and UC2844 is?
In the datasheet of UC2844, I saw the Fosc = 2* Fsw.
In the datasheet of UC2844A…
Part Number: UC2844A Hi team,
My customer wants to know what are the abs. max rerating for below pins for UC2844A, the datasheet did not label them very clearly.
Pin Name
Max. Rating
(V)
COMP
VFB
ISENSE
RT/CT
OUTPUT
VCC
…