UC3845D CURRENT MODE PWM CONTROLLER IC

DESCRIPTION
TheUC3842/3/4/5family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count.
   
■ OPTIMIZED FOR OFF-LINE AND DC TO DC
    CONVERTERS
■ LOW START-UP CURRENT (< 1 mA)
■ AUTOMATIC FEED FORWARD COMPENSATION
■ PULSE-BY-PULSE CURRENT LIMITING
■ ENHANCED LOAD RESPONSE CHARACTERISTICS
■ UNDER-VOLTAGE LOCK OUTWITH HYSTERESIS
■ DOUBLE PULSE SUPPRESSION
■ HIGH CURRENT TOTEM POLE OUTPUT
■ INTERNALLY TRIMMED BAND GAP REFERENCE
■ 500 KHz OPERATION
■ LOW RO ERROR AMP