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ISL6722AARZ Datasheet(PDF) 2 Page - Intersil Corporation |
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ISL6722AARZ Datasheet(HTML) 2 Page - Intersil Corporation |
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2 / 24 page  2 FN9237.1 July 11, 2007 Functional Block Diagram (ISL6722A) VREF SS 12k ON ON ON 30k 5k 20k VCC ISENSE ISET COMP SS OV UV GATE SLOPE VFB PGND VC SLEEP LGND VREF SOFT-START CHARGE CURRENT FAULT LATCH PWM COMPARATOR SET DOMINANT SS LOW 0.8 SS CLAMP 2.5V ENABLE SS LOW COMPARATOR VREF UV COMPARATOR 4.65V 4.375V 1mA 3.0V/ 1.5V OSCILLATOR COMPARATOR 70µA 3.0V BLANKING COMPARATOR OC DETECT SS CHARGED + - START/STOP UV COMPARATOR VREF 5V + - BG + - 100mV + + S 0.1 53µA + - ERROR AMPLIFIER + - 1/3 VREF + - ON 15µA + - 25µA + - 270mV S R Q Q + - OVERCURRENT COMPARATOR 100ns BLANKING + - START + - VREF + - 2.50V 1.45V BG + - 36k SS CHARGE VOLTAGE CLAMP RESTART DELAY S R Q Q OVERCURRENT SHUTDOWN DELAY SS DCHG SS CHG SHTDN OC OC FAULT R ISL6722A, ISL6723A |
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