MP55C Datasheet | SEMTECH

ESCRIPTION: The MP54C/MP55C series of power modules are low noise (no EMI), economical linear DC:DC converters with an integral connector conforming to Intel Corporation’s Voltage Regulator Module specification for the Pentium® Processor. Outstanding Features include internal current limiting and thermal shutdown, providing full device protection against load faults and thermal overstress. The MP55C is designed to power split voltage plane microprocessors requiring 3.3V VI/O and 2.x V VCORE. The VI/O is always supplied directly from a 3.3V input; either the main system power supply or a low dropout regulator on the motherboard. The CPU core can be supplied either from the 3.3V main supply to reduce heat dissipation (MP55C-3.3) or the 5V main power supply (MP55C-5). The MP55C-3.3 still requires a few m A of 5V power for control circuitry. The MP55C-3.3 will not be available for CPU core voltages higher than 2.8V. Please contact Semtech for availability. Features : - Integral VRM header connector - Input voltage 5V ± 5% - 2.8 ± 0.1V output for CPU core power - 3.3V passes through the I/O power plane - Maximum output current 6A - Input power voltage: - 5V ± 5% for MP55C-5 or 3.3V for MP55C-3.3 Low noise, no EMI 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 (V) 5.0 5.0 3.3 3.3 3.3 Output (V) 2.8 2.5 2.8 2.7 2.5 APPLICATIONS: - Pentium® Processor P55C, Cyrix 6x86 and AMD5K86 power supplies ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage (1) 2.8V version 2.7V version 2.5V version SYMBOL VO MIN 2.7 2.6 2.4 TYP 2.8 2.7 2.5 0.015 0.1 1.2 0.40 7.5 12 0.005 0.5 0.003 72 0.5 100 MAX 3.0 2.8 2.6 6.0 0.2 0.4 1.3 UNITS V Output Current Line Regulation(1) Load Regulation(1) Dropout voltage Current Surge Limit Quiescent Current Temperature Coefficient Temperature Stability RMS Output Noise(2) Ripple Rejection Ratio Linear Airflow Requirements (ambient temperature 55°C) (MP55C-5) (MP55C-3.3) IO REG(LINE) REG(LOAD) VD IS...