Part Number: UC1843A Tool/software: What is Ro for the error amplifier? Could it be as high as 1k. I understand that Ro is the open loop output resistance and that the actual output impedance decrease weth frequency but i just want to know what Ro is…
Part Number: UC1843A-SP Tool/software: What is the source of the oscillator initial tolerance? In the data sheet it's listed as 47 kHz to 55 kHz for CT = 3.3 nF and RT = 10 kHz.
Is it the oscillator's comparator thresholds uncertainty?
Part Number: UC1843A Tool/software: This model seems to be operating incorrectly and is able to source ~4A.
Why is the Comp pin sourcing ~4A when the limit is ~1mA? Is there a different model I should be using?
Part Number: UC1843A-SP Other Parts Discussed in Thread: UC1843 Tool/software: Hello, I wanted to know if the error amplifier of the UC1843 family is an operational amplifier or an OTA, it's confusing the current source at the output
Part Number: UC1843A Tool/software: HI,
what is the Theta-J-B , Theta J-A, Theta J-C for this device (regular plastic soic-8 package).
I saw a question on it but the answer was not clear if it was for UC1842EP or the the UC1843AMDREP.
I need the…
Part Number: UC1843A Other Parts Discussed in Thread: UC1843 Tool/software:
COMPENSATION
CS PIN
DRAIN TO SOURCE
GATE PULSES
Hi I am testing a flyback converter using UC1843.
HERE the specs are Universal input AC-DC.
OUTPUT VOLTAGE…
Part Number: UC1843A-EP Tool/software: Is this part radiation tolerant? What is the TID level and SEE level? of this part. UC1843A-EP?
Thanks,
Phil Reingold
preingold@blueorigin.com
1-425-737-5355
Part Number: UC1843A Other Parts Discussed in Thread: UC3842 Tool/software: From UCx84x datasheet (SLUS223G – APRIL 1997 – REVISED JULY 2022) Section 8.3.7 states: “The UC3842/3/4/5 oscillator must be set to a lower frequency than the sync pulse stream…
Part Number: UC1843A Other Parts Discussed in Thread: UC1843 Tool/software: Dear, Sir.
To design a step-up converter using the UC1843A and considering that the PWM controller's output switches at the VCC input level, the VGS voltage of the external…
