SG3843M

电流模式PWM控制器 CURRENT MODE PWM CONTROLLER

KEY FEATURES

OPTIMIZED FOR OFF-LINE CONTROL

LOW START-UP CURRENT <1mA

AUTOMATIC FEED FORWARD COMPENSATION

TRIMMED OSCILLATOR DISCHARGE CURRENT

PULSE-BY-PULSE CURRENT LIMITING

ENHANCED LOAD RESPONSE CHARACTERISTICS

UNDER-VOLTAGE LOCKOUT WITH 6V HYSTERESIS SG1842 only

DOUBLE-PULSE SUPPRESSION

HIGH-CURRENT TOTEM-POLE OUTPUT 1AMP PEAK

INTERNALLY TRIMMED BANDGAP REFERENCE

500KHZ OPERATION

UNDERVOLTAGE LOCKOUT

    SG1842 - 16 volts

    SG1843 - 8.4 volts

LOW SHOOT-THROUGH CURRENT <75mA OVER TEMPERATURE