L6911 STMicroelectronics, L6911 Datasheet
L6911
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L6911 Summary of contents
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... April 1999 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 OCSET BOOT 2 ...
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... Junction Temperature Range J 2/7 have fast switching to the external power mos, performing an high efficiency. The L6911B as- sures a fast protection against load overvoltage and load overcurrent. An external SCR is trig- gered to crowbar the input supply in case of over- voltage. In case of output short circuit the soft start capacitor is discharged and the system works in hiccup mode ...
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... SCR that crowbar the supply voltage OVP 3 18 VCC 4 17 LGATE 5 16 PGND 6 15 BOOT 7 14 UGATE 8 13 PHASE 9 12 PGOOD 10 11 GND D98IN958 Description I R ocs ocs I P Rdson to 12V 5V L6911B 3/7 ...
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... L6911B PIN FUNCTION (continued) N Name 20 RT Oscillator Switching frequency pin. Connecting an external resistor from this pin to ground the switching frequency is increased according to the equation: Connecting the resistor from this pin and the Vcc the Switching frequency is reduced according to the equation: If the pin is not connected the switching frequency is 200kHz. ...
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... L6911B Min. Typ. Max. Unit 106 - 111 % 0 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2 2.05 0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 5/7 ...
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... L6911B mm DIM. MIN. TYP. MAX. MIN. A 2.35 2.65 0.093 A1 0.1 0.3 0.004 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 12.6 13 0.496 E 7.4 7.6 0.291 e 1. 10.65 0.394 h 0.25 0.75 0.010 L 0.4 1.27 0.016 K 0 (min.)8 (max 6/7 inch OUTLINE AND MECHANICAL DATA TYP. MAX. 0.104 0.012 0.020 0.013 0.512 0.299 0.050 0.419 0.030 0.050 ...
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... The ST logo is a registered trademark of STMicroelectronics 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com L6911B 7/7 ...