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| ISL8843 |
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 INTERSIL
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Functional Block Diagram ON 150K 100K V DD CS OUT FB RTCT GND VREF PWM COMPARATOR RESET DOMINANT 2.5V ENABLE 8.4mA 2.9V 1.0V OSCILLATOR COMPARATOR < 10nS + - START/STOP UV COMPARATOR V REF 5.00 V + - BG 100mV 5% ERROR AMPLIFIER + - VREF + - ON + - S R Q Q 36K COMP VREF UV COMPARATOR 4.65V ↓ 4.80V ↑ BG A=0.5 + - CLOCK 1.1V 3% CLAMP 2R R P/N UVLO ON/OFF 8843 8.4 / 7.6V VF Total = 1.15V A VREF FAULT V DD OK 100 nS FALLING EDGE DELAY |
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