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SMS64FR05 参数 Datasheet PDF下载

SMS64FR05图片预览
型号: SMS64FR05
PDF下载: 下载PDF文件 查看货源
内容描述: 六通道电源监视器和控制器排序 [Six-Channel Supply Monitor and Sequencing Controller]
分类和应用: 监视器控制器
文件页数/大小: 24 页 / 658 K
品牌: SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
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SMS64
Six-Channel Supply Monitor and Sequencing Controller
FEATURES & APPLICATIONS
Monitors and Controls up to 6 Power
Supplies
Programmable Sequencing for both Power-
on and Power-off
Programmable Threshold Sensors
Programmable Reset and Interrupt Functions
Programmable Watchdog/Longdog Timer
Fault and Status Registers
4k-Bit Nonvolatile Memory
Applications
Monitor and Control Distributed Power and
Point of Use Power Supplies
Telecom
Compact PCI
Servers
Multi-voltage Network Processors, DSPs,
ASICs
Preliminary
INTRODUCTION
The SMS64 is a highly integrated power supply
monitor and controller. The SMS64 has six supply
managers, each individually programmable with
regard to threshold voltages, actions that can be taken
with either an under- or over-voltage condition and
how that manager will operate in sequencing the
power-on operation.
The managers can act independently or sequenced
with any other manager in the device. When the
managers work together the device can control the
sequence in which power is applied to the application
circuits. Each manager is assigned to a sequence
position which allows the device to perform power
supply sequencing in any order.
For power-off
situations the SMS64 can sequence the supplies
either in the same order or reverse order from the
power-on sequence.
The SMS64 has two programmable Watchdog
timers, two programmable reset outputs and a
programmable IRQ# output. Using the I
2
C 2-wire
serial interface, a host system can communicate with
the SMS64 status register, optionally control power-on
via software and utilize 4 K-bits of nonvolatile memory.
SIMPLIFIED APPLICATIONS DRAWING
3.3V
V+
OU T
2.5V
ON/OFF
SET
GND
UP
2.7V
2.7V
V+
OU T
1.8V
VCC
A
PUP
A
PUP
B
PUP
C
VM
A
VCC
B
VM
B
RESET#
Pow er-On
MR#
VM
C
VM
D
PW R_ON /O FF
VCC_CAP
T
G_ HY#
CA
P
PUP
D
SHDN SET
GND
ASIC
SM S64
RST_B#
PUP
E
PUP
F
GN
AL
IR Q
HE
IRQ#
HEALTHY#
GND
V+
OU T
GND
ON/OFF
VG
VM
F
VM
E
D
RST_A#
#
2.0V
DSP
2.7V
V+
OU T
GND
ON/OFF
1.5V
Power Supply Sequencing and System Start-up Initialization using the SMS64
This is an example application and the specific component values are purposely not shown. The SMS64 can be used with any combination of
MOSFETs, LDOs or DC/DC converters to optimize sequencing and minimize losses in the power chain.
©
SUMMIT MICROELECTRONICS, Inc. 2003 • 1717 Fox Dr. • San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 •
wwwsummitmicro.com
Characteristics Subject to Change Without Notice
2060 2.22 10/09/03
1