(1 PC) SMS66F-171 SUMMIT Power Management Circuit 48-TQFP
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THIS IS FOR (1 PC) OF SMS66F-171 BY SUMMIT
Power Management Circuit 48-TQFP
Six-Channel Power Supply Supervisor and Cacsade Sequence Controller 48-TQFP
FEATURES & APPLICATIONS
• Very accurate monitor function – 5mV steps
• Monitors and sequences up to six supplies
• Programmable Power-on/-off sequencing
• Monitors internal temperature sensor
• Operates from 12V or 3.3V supply
• Monitors 12V input and VDD
• Monitors two general-purpose 10-bit ADC inputs
• Programmable threshold limits (2 OV/2 UV) for
each monitored input
• Programmable RESET, HEALTHY and FAULT
functions
• 4k-bit general purpose nonvolatile memory
• I
2
C 2-wire serial bus for programming
configuration and monitoring status, including
10-bit ADC conversion results
INTRODUCTION
The SMS66 is a very accurate programmable power
supply supervisor that monitors and sequences. It
controls sequencing time and position of up to six
isolated or non-isolated distributed or POL DC/DC
converters. The monitor supervisory function has two
independent UV and OV settings for each supply and
can be set in 5mV steps. The SMS66 also sequences
the power supplies in any order using enable outputs
with programmable polarity.
The SMS66 monitors six power supply channels as
well as VDD, 12V input, two general-purpose analog
inputs and an internal temperature sensor using a 10-
bit ADC. The 10-bit ADC can measure the value on
any one of the input channels and output the
conversion data via the I2
C bus.
Using the I2
C interface, a host system can
communicate with the SMS66 status register,
optionally control Power-on/off, and utilize 4 K-bits of
nonvolatile memory.
Applications
• Monitor and Sequence Distributed Power and
Point of Load Power Supplies
• Multi-voltage Processors, DSPs, ASICs used in
Telecom, CompactPCI or server systems