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L6911 Datasheet(PDF) 1 Page - STMicroelectronics |
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L6911 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 7 page OPERATING SUPPLY VOLTAGE FROM 5V TO 12V TTL-COMPATIBLE 5BIT PROGRAMMABLE OUTPUT FROM: -1.3V TO 2.05V WITH 0.05V BINARY STEPS -2.1V TO 3.5V WITH 0.1V BINARY STEPS VOLTAGE MODE PWM CONTROL EXCELLENT OUTPUT ACCURACY +/-1% OVERLINE, AND TEMPERATURE VARIATIONS HIGH PRECISION INTERNAL REFERENCE DIGITALLY TRIMMED VERY FAST LOAD TRANSIENT 0% TO 100% DUTY CYCLE POWER GOOD OUTPUT OVERVOLTAGE PROTECTION OVERCURRENT PROTECTION REALISED USING THE MOSFET’s RDSon OPERATING FREQUENCY FROM 50KHz TO 1MHz MEETS INTEL PENTIUM II SPECIFICATION DISABLE FUNCTION Applications POWER SUPPLY FOR ADVANCED MICRO- PROCESSOR SUPPLIES POWER SUPPLY FOR PENTIUM II INTEL PROCESSORS DESCRIPTION The L6911B is a power supply controller specifi- cally designed to provide a high performance DC/DC conversion for Pentium II Microproces- sors. A precise 5 bit digital to analog converter April 1999 ® 10 PGND PHASE GND VFB LGATE BOOT UGATE VCC OCSET 11 16 17 13 14 15 V CC 5V/12V 18 2 Vin 5V/12V Vo 1.3V to 3.5V 4 5 6 7 8 1 PGOOD 12 19 3 20 VD0 VD1 VD2 VD3 VD4 COMP VSEN SS OVP OSC 9 D98IN956B APPLICATION CIRCUIT SO20 L6911B 5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PROCESSOR 1/7 |
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