SG3843M
数据手册.pdfMicrosemi(美高森美)
主动器件
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