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2022-09-24 23:33:15
UTCUC3842A-Current Mode PWM Control Circuit
describe
UTC UC3842A/3843A provide the necessary functions to implement off-line or DC to DC fixed frequency current mode, with a minimum number of external control switching circuit parts
Features
*Low external component count.
*Low start-up current (0.12mA typical)
*Automatic feedforward compensation
*Pulse by pulse current limit
* Undervoltage lockout hysteresis
*Double pulse suppression
* High current totem pole output, direct drive MOSFET
* Internally trimmed bandgap reference
*500kHz operation