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SC1102CSTR Datasheet(PDF) 4 Page - Semtech Corporation |
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SC1102CSTR Datasheet(HTML) 4 Page - Semtech Corporation |
4 / 10 page SC1102 SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS © 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 September 5, 2000 4 NOTE: (1) All logic level inputs and outputs are open collector TTL compatible. PIN DESCRIPTION Pin # Pin Name Pin Function 1 VCC Chip supply voltage 2 PWRGD Logic high indicates correct output voltage 3 OVP Over voltage protection. 4 OCSET Sets the converter overcurrent trip point 5 PHASE Input from the phase node between the MOSFET’S 6 DH High side driver output 7 PGND Power ground 8 DL Low side driver output 9 BSTL Bootstrap, low side driver. 10 BSTH Bootstrap, high side driver. 11 SENSE Voltage sense input 12 VREF Buffered band gap voltage reference. 13 SS/SHDN Soft start. A capacitor to ground sets the slow start time. 14 GND Signal ground CHARACTERISTIC CURVES SC1102 Voltage Regulation, Vin=5V -2% -1% 0% 1% 2% 0 123 456 78 9 10 11 12 Current, A 3.3V 2.5V 2.0V 1.3V SC1102 Effiency, Vin=5V 60% 70% 80% 90% 100% 01 23 45 678 9 10 11 12 Current, A 3.3V 2.5V 2.0V 1.3V |
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