Part Number: UC1845 Other Parts Discussed in Thread: UC2845 Dear sir,
quick questions:
Q1: what is the difference between UC1845 and UC2845, except for temperature?
Q2: whether we have SOIC package of UC1845 now?
Nice day!
Regards,
Jack
Part Number: UC1845-SP
Tool/software:
Hi,
I noticed that was a significant increase on the thermal resistances, junction to board from the previous version compared to the most updated version. What cause these values to increase? Also is there…
Part Number: UC1845 Hello,
Is there any data regarding the feedback and reference voltages for the UC1845?
Specifically, EOL tolerances for a worst-case analysis. If not anything similar?
Part Number: UC1845 I am trying to use the PSpice model for UC1845. I get an error when running the sim that V3 is missing a value. Is there an updated model available for this component?
Hey Vikrant,
Whether you can find a standard transformer will be up to what you pick for your design.
I don't know what the standard transformers are and you are going to have to talk to a transformer manufacturer/distributor for that.
Thanks,…
Part Number: UC1845 Hi,
The UC1845 datasheet section 8.3.1.4 RT/CT provides a recommended range for timing resistor R_RT (5Kohm-100Kohm) and timing capacitor C_CT (1nF-100nF), so does it mean the recommended maximum oscillating frequency f_OSC is 1…
Other Parts Discussed in Thread: UC1845 Hello. Would anyone happen to have information on what the temperature coefficient of the 1V clamp inside the UC1845 chip is? I need to know if it increases or decreases with temp, and I can't seem to find any concrete…
Hi Bill,
I think the issue is that there is a typical 150ns delay in the CS block which is time taken from when the CS voltage exceeds the COMP pin value to the output pin going low. See page 4 of the datasheet, Current sense section, last line.
…
Other Parts Discussed in Thread: UC1845 , UC2845 Hi,
We dont find the simulation models for the UC1845/UC2845 in Tina. Do you have any micromodel text fixture for this. Can you please let us know how to simulate this reegulator.
