UC2843 Datasheet | STMicroelectronics

UC2842/3/4/5 ® UC3842/3/4/5 CURRENT MODE PWM CONTROLLER . OPTIMIZED FOR OFF-LINE AND DC TO DC CONVERTERS . LOW START-UP CURRENT (< 1 mA) . AUTOMATIC FEED FORWARD PENSA- TION . PULSE-BY-PULSE CURRENT LIMITING . ENHANCED LOAD RESPONSE CHARAC- TERISTICS . UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS . DOUBLE PULSE SUPPRESSION . HIGH CURRENT TOTEM POLE OUTPUT . INTERNALLY TRIMMED BANDGAP REFER- ENCE . 500 KHz OPERATION . LOW RO ERROR AMP DESCRIPTION TheUC3842/3/4/5family of controlICs provides the necessary Features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal externalparts count.Internallyimplementedcircuits include undervoltagelockout featuring...