MP55C TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.co

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MP55C TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.co

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PENTIUM PROCESSOR P55C VOLTAGE REGULATOR MODULE
MP55C
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION:
MP54C/MP55C series power modules noise EMI), economical linear DC:DC converters with integral connector conforming Intel Corporation's Voltage Regulator Module specification Pentium® Processor. Outstanding features include internal current limiting thermal shutdown, providing full device protection against load faults thermal overstress. MP55C designed power split voltage plane microprocessors requiring 3.3V VI/O 2.xV VCORE. VI/O always supplied directly from 3.3V input; either main system power supply dropout regulator motherboard. core supplied either from 3.3V main supply reduce heat dissipation (MP55C-3.3) main power supply (MP55C-5). MP55C-3.3 still requires power control circuitry. MP55C-3.3 will available core voltages higher than 2.8V. Please contact Semtech availability.
FEATURES: Integral header connector Input voltage 0.1V output core power 3.3V passes through power plane Maximum output current Input power voltage:
MP55C-5 3.3V MP55C-3.3 noise,
ORDERING INFORMATION:
DEVICE MP55C-5-2.8 MP55C-5-2.5 MP55C-3.3-2.8 MP55C-3.3-2.7 MP55C-3.3-2.5 Input Output
APPLICATIONS: Pentium® Processor P55C, Cyrix 6x86
AMD5K86 power supplies
ELECTRICAL CHARACTERISTICS
PARAMETER Output Voltage 2.8V version 2.7V version 2.5V version SYMBOL 0.015 0.40 0.005 0.003 UNITS
Output Current Line Regulation(1) Load Regulation(1) Dropout voltage Current Surge Limit Quiescent Current Temperature Coefficient Temperature Stability Output Noise(2) Ripple Rejection Ratio Linear Airflow Requirements (ambient temperature 55°C)
(MP55C-5) (MP55C-3.3)
REG(LINE) REG(LOAD)
%/°C ft/min
NOTES: duty cycle pulse testing with Kelvin connections required. Bandwidth kHz.
Pentium registered trademark Intel Corporation. AMD5K86 trademark Advanced Micro Devices. 6x86 trademark Cyrix.
1997 SEMTECH CORP.
MITCHELL ROAD NEWBURY PARK 91320
PENTIUM PROCESSOR P55C VOLTAGE REGULATOR MODULE
October 1997 INPUT OUTPUT CONNECTIONS VI/O +3.3V +3.3V VCORE VCORE VCORE GOOD SENSE +5.0V +5.0V VI/O VI/O +3.3V +3.3V VCORE VCORE VCORE VCORE DISABLE +5.0V +5.0V view connector (viewed from motherboard side)
MP55C
VOLTAGE REGULATOR MODULE CONNECTOR REFERENCE
Name +3.3V +5.0V VCORE VI/O DISABLE Input Input Output Output Input Input Function +3.3V Supply +5.0V Supply Voltage Regulator Module Output power connection. Ground Reference When driven high, this input will disable Voltage Regulator Module output output module will float. Power Good driven when output within valid levels. Sense provided regulator correct voltage drops across connector motherboard powerplane. Formerly UPVRM# Notes Connected directly VI/O. MP55C-3.3: Main Power Input MP55C-5: Main power input MP55C-3.3: Bias regulator control 2.8V output core Tied 3.3V input (VCC3) Ground connected
GOOD SENSE
Output Input
connected MP55C-5: connected MP55C-3.3: Connected Tied output. connected
Input
1997 SEMTECH CORP.
MITCHELL ROAD NEWBURY PARK 91320
PENTIUM PROCESSOR P55C VOLTAGE REGULATOR MODULE
MP55C
MECHANICAL DIMENSIONS
Dimension
Inches 2.575 0.24 0.42 0.15
Millimeters 65.4 45.7 20.3 40.6 10.7 12.7
Component size location illustration only
INPUT VOLTAGE CONFIGURATIONS
MP55C-3.3 Uses 3.3V input (from main system power supply) conversion core voltage. Lowest dropout 0.35V; VCORE higher than 2.8V must MP55C-5. milliamps power necessary control circuit bias.
MP55C-5 Uses main power 3.3V VI/O. 3.3V supplied dropout regulator such EZ1085. supplied main system power supply.
1997 SEMTECH CORP.
MITCHELL ROAD NEWBURY PARK 91320

MP55C TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.co

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