sc1146csw.tr Semtech Corporation, sc1146csw.tr Datasheet
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sc1146csw.tr
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sc1146csw.tr Summary of contents
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... Selectable internal or external clock = Soft start/UVLO/Over current protection APPLICATIONS = High end servers and workstations = High current/Ultra-fast transient microprocessors ORDERING INFORMATION (1) DEVICE SC1146CSW.TR Note: (1) Only available in tape and reel packaging. A reel contains 1000 devices. BLOCK DIAGRAM 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1146 PACKAGE TEMP SO- 85° ...
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July 25, 2000 ABSOLUTE MAXIMUM RATINGS Parameter V to GND CC5V FBG to GND V to GND CC2 Operating Temperature Range Junction Temperature Range Storage Temperature Range Thermal Resistance Junction to Case Thermal Resistance Junction to Ambient Lead Temperature (Soldering) ...
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July 25, 2000 ELECTRICAL CHARACTERISTICS (Cont.) Unless otherwise noted PARAMETER SYMBOL Bgout Voltage Bgout Impedance External Clock Freq. Range F Oscillator Frequency Internal Clock Freq. Range Match DRV0-3 PWM Off Time Overcurrent Comparator, OCC_CMR ...
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July 25, 2000 PIN DESCRIPTION Pin # Pin Name Divsel 3 Clksel 4 Extclk 5 R REF (1) 6 VID0 (1) 7 VID1 (1) 8 VID2 (1) 9 VID3 (1) 10 VID4 11 OC+ 12 ...
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July 25, 2000 OUTPUT VOLTAGE Unless specified GND High (or Floating 5V 5V, 4-Phase operation. A CC5V CC2 VID4 VID3 ...
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Long PCB Trace 10K R33 SMOD Power Good C11 C12 C13 Pwrgood INPUT Divsel Drv3 S1 10K 10K 10K ...
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July 25, 2000 BILL OF MATERIAL Item Qty Reference 1 9 C2,C4,C11,C19,C20,C28,C29,C37,C39 C5,C12,C14,C17,C18,C21,C22,C26,C27 4 5 C6,C7,C15,C24,C32 C16,C25,C33 7 1 C40 8 1 C42 9 2 C45,C49 10 1 C46 11 ...
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July 25, 2000 THEORY OF OPERATION FUNCTIONAL DESCRIPTION The SC1146 is a programmable, high performance, multi-phase controller designed for the most demand- ing DC/DC converter applications in which transient response, space, input ripple current and component form factor and cost ...
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July 25, 2000 ERROR AMPLIFIER CONT. Fig. 3: Transient response, Top trace, Current sense 8A/div @ 30A/usec. Bottom trace, V Fig. 4: Transient response, Top trace, Gate Drive Bottom trace, Transient current 16A/div @ 30A/usec. The error amplifier has two ...
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July 25, 2000 An evaluation board is available which may be ordered directly from the factory. SC1146/1405EVB is a DC/DC converter utilizing the SC1146 four-phase controller in a high current synchronous application. The evaluation board is intended as a guideline ...