MP55C-5-2.5 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
MP55C-5-2.5 Datasheet PDF : 3 Pages
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October 27, 1997
PENTIUM® PROCESSOR P55C
VOLTAGE REGULATOR MODULE
MP55C
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION:
The MP54C/MP55C series of power modules are low
noise (no EMI), economical linear DC:DC converters
with an integral connector conforming to Intel Corpora-
tion’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 microproces-
sors requiring 3.3V VI/O and 2.xV VCORE. The VI/O is al-
ways 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 dissi-
pation (MP55C-3.3) or the 5V main power supply
(MP55C-5). The MP55C-3.3 still requires a few mA 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.
APPLICATIONS:
• Pentium® Processor P55C, Cyrix 6x86 and
AMD5K86 power supplies
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
Input (V)
MP55C-5-2.8
5.0
MP55C-5-2.5
5.0
MP55C-3.3-2.8
3.3
MP55C-3.3-2.7
3.3
MP55C-3.3-2.5
3.3
Output (V)
2.8
2.5
2.8
2.7
2.5
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage (1)
SYMBOL
MIN
2.8V version
VO
2.7
2.7V version
2.6
2.5V version
2.4
Output Current
Line Regulation(1)
Load Regulation(1)
Dropout voltage
(MP55C-5)
(MP55C-3.3)
IO
REG(LINE)
REG(LOAD)
VD
Current Surge Limit
Quiescent Current
Temperature Coefficient
Temperature Stability
RMS Output Noise(2)
Ripple Rejection Ratio
Linear Airflow Requirements
(ambient temperature 55°C)
IS
IQ
TC
TS
VN
RA
0.5
100
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Bandwidth of 10 Hz to 10 kHz.
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
MAX
3.0
2.8
2.6
6.0
0.2
0.4
1.3
16
UNITS
V
A
%
%
V
A
mA
%/°C
%
%VO
dB
m/s
ft/min
© 1997 SEMTECH CORP.
Pentium is a registered trademark of Intel Corporation. AMD5K86 is a trademark of Advanced Micro Devices. 6x86 is a trademark of Cyrix.
652 MITCHELL ROAD NEWBURY PARK CA 91320
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