l6911b STMicroelectronics, l6911b Datasheet
l6911b
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l6911b Summary of contents
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... SO20 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 15 ...
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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 is 5V. CC 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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... Test Condition Min. Typ. V Rising 106 SEN V Rising 89 SEN Upper and Lower Threshold - I = -5mA - PGOOD VID0 OUTPUT VOLTAGE (V) 1 1.3 0 1.35 1 1.4 0 1.45 1 1.5 0 1.55 1 1.6 0 1.65 1 1.7 0 1.75 1 1.8 0 1.85 1 1 2.1 1 2.2 0 2.3 1 2.4 0 2.5 1 2.6 0 2.7 1 2 3.1 1 3.2 0 3.3 1 3.4 0 3.5 L6911B Max. Unit - 111 % - 0 5/7 ...
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... L6911B mm inch DIM. MIN. TYP. MAX. MIN. TYP. 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 1.27 0.050 H 10 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 OUTLINE AND MECHANICAL DATA MAX. 0.104 0.012 0.020 0.013 0.512 0.299 0.419 0.030 0.050 SO20 ...
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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 ...