SC1102 Semtech Corporation, SC1102 Datasheet
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SC1102
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SC1102 Summary of contents
Page 1
... Power good signaling, shutdown, and over voltage protection are also pro- vided. The SC1102 operates at a fixed 200kHz, providing an optimum compromise between efficiency, external component size, and cost. APPLICATION CIRCUIT Typical Distributed Power Supply ...
Page 2
... V O CONDITIONS 2. 4. PHASE = 4. PGND = OVP 2.0V V 12V OCSET 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 Maximum Units -0 ± 0 °C/W 115 °C °C -65 to +150 °C 300 ° 12V 12V ...
Page 3
... SOIC) © 2000 SEMTECH CORP. SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS ; V = 12V BSTL CONDITIONS MIN 1.252 - 1.5V 8 1.5V 1.3 SS BLOCK DIAGRAM 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 o = 12V BSTH-PHASE J TYP MAX UNITS 1.265 1.278 µA 2 2.4 µA 3 ...
Page 4
... PGND BSTL 10 BSTH 11 SENSE 12 VREF 13 SS/SHDN 14 GND NOTE: (1) All logic level inputs and outputs are open collector TTL compatible. CHARACTERISTIC CURVES SC1102 Voltage Regulation, Vin= -1% - Current, A © 2000 SEMTECH CORP. SYNCHRONOUS DC/DC CONTROLLER FOR ...
Page 5
... Ch1: Vo_rpl 5V 1.3V 12A IN OUT OUT Ch1: Vo_rpl © 2000 SEMTECH CORP. SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS Gate Drive Waveforms Ch1: Top FET Ch2: Bottom FET Ch1: Top FET Ch2: Bottom FET 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 5 ...
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... SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS Ch1: Vin Ch2: Vss Ch3: Top Gate Ch4: Vout Vin = 5V Vout = 3.3V Iout = 2A Vbst = 12V Ch1: Vin Ch2: Vss Ch3: Top Gate Ch4: Vout Vin = 5V Vout = 3.3V Vbst = 12V Iout = S.C. 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 6 ...
Page 7
... MOSFET connected to DH, hence lowering the output voltage. Under Voltage Lockout The under voltage lockout circuit of the SC1102 as- sures that the high-side MOSFET driver outputs re- main in the off state whenever the supply voltage drops below set parameters. Lockout occurs ...
Page 8
... MBRA130 14 C3 SHDN 0.1 13 VREF 1.0 STP40NE 9 1 3.9 STP40NE 8 D3 MBRD1035 R6 Optional 2.2 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 + Vin 12V 270/16V 10.0 270/16V 270/16V _ R9 205* R8 127 L1 4uH + C10 C11 C12 C13 C14 Vout=3.3V* 180/4V 180/4V 180/4V 180/4V ...
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... September 5, 2000 Top component side view Top copper view Bottom copper view © 2000 SEMTECH CORP. SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 9 ...
Page 10
... September 5, 2000 OUTLINE DRAWING SO-14 LAND PATTERN SO-14 ECN00-1311 © 2000 SEMTECH CORP. SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1102 10 ...