Circuit Diagram Uc3843 Pinout. Output short circuit current isc 30 85 180 30 85 180 ma oscillator section frequency tj 25 c ta tlow to thigh fosc 47 46 52 57 60 47 46 52 57 60 khz frequency change with voltage vcc 12 v to 25 v fosc v 0 2 1 0 0 2 1 0 frequency change with temperature ta tlow to thigh fosc t 5 0. Ti s uc3843 is a single ended 500khz current mode pwm controller with 8 4v 7 6v uvlo 100 duty cycle 0c to 70c.
While building switch mode supplies with feedback. Pdf uc3843 data sheet. A circuit diagram to quickly help you understand the application of uc3845 in switching power supply.
Uc2842 uc3842 uc3844 sg2524.
Ti s uc3843 is a single ended 500khz current mode pwm controller with 8 4v 7 6v uvlo 100 duty cycle 0c to 70c. Uc3843 stepdown with transformer. Pdf uc3843 data sheet. The next version will be much like the v2 except for a few changes.
