SC1103 Semtech Corporation, SC1103 Datasheet
SC1103
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SC1103 Summary of contents
Page 1
... PWM controller designed for use in single ended DC/DC power supply applications. A sim- ple, fixed-voltage buck regulator can be imple- mented using the SC1103 with a minimum of ex- ternal components. Internal level shift and drive circuitry eliminates the need for an expensive p- channel, high-side switch. The small device foot- print allows for compact circuit design ...
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... Device Power Ground High Side Driver Output High Side Driver V (Boost) BST Error Amplifier Input (-) Small Signal Ground Symbol V to GND CC P GND BST to GND 652 MITCHELL ROAD NEWBURY PARK CA SC1103 Maximum Units -0 GND ± -0 +70 ° -45 to +125 ° ...
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... V = 2V) DH PGND 5.6uH 0.01 IRL3103S D1 MBRB1530CT R4 2.7 8 GND C7 0. BST NOTE 124 x (Vout/1. rounded to nearest 1%value C8 0.1 652 MITCHELL ROAD NEWBURY PARK CA SC1103 MIN TYP MAX 1.250 1.263 1.250 1.275 2.0 8.0 5.0 8.0 0.5 1.0 0 180 200 220 500 3.8 Vout(+) R6 *see note ...
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... Fig. 2: Load Regulation @ V 1.0% 0.8% 0.6% 0.4% 0.2% 0.0% -0.2% -0.4% -0.6% -0.8% -1.0% 0 Fig. 4: Load Regulation @ V = 10A O 0.5% 0.4% 0.3% 0.2% 0.1% 1.8V 2.5V 0.0% 3.3V -0.1% 5V -0.2% -0.3% -0.4% -0.5% 11 Fig. 6: Line Regulation @ V 652 MITCHELL ROAD NEWBURY PARK CA SC1103 Current (Amps) = 3.3V 12V Output Current, (A) = 12V IN 11.6 11.8 12.0 12.2 12.4 Input Voltage, (V) = 3.3V 10A Vo= 1.8V 2.5V 3.3V 5.0V 12.6 4 ...
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... Output Capacitor(s) and the Cin, Q1, D1 loop. Under no circumstances should GND be returned to a ground inside the Cin, Q1, D1 loop. 6) Vcc for the SC1103 should be supplied from the VIN supply through a 10 resistor, the Vcc pin should 24V IN 12V ...
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... The Current Sense resistor and the divider across it should form as small a loop as possible, the traces run- ning back to CS(+) and CS(-) on the SC1103 should run parallel and close to each other. The 0.1µF capaci- tor should be mounted as close to the CS(+) and CS(-) pins as possible ...
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... GND C5 0. BST 0 5.6uH IRL3103S C4 D1 820/16V MBRB1530CT U1 SC1103 R4 2.7 8 GND C7 0. BST 5 DH 652 MITCHELL ROAD NEWBURY PARK CA SC1103 R5 0.012 R6 124 C8 C7 0.1 1500/6.3V R7 124 R5 0.01 R6 205 C12 C9 C10 C11 0.1 1500/6.3 1500/6.3 1500/6.3V R7 124 +2.5V GND Vout(+) 3.3V Vout(-) 7 ...
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... PRELIMINARY - February 29, 2000 OUTLINE DRAWING LAND PATTERN SO-8 ECN00-899 © 2000 SEMTECH CORP. VOLTAGE MODE PWM CONTROLLER 652 MITCHELL ROAD NEWBURY PARK CA SC1103 JEDEC REF: MS-012AA 8 ...