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LTC2933_15

产品描述Programmable Hex Voltage Supervisor with EEPROM
文件大小257KB,共32页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
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LTC2933_15概述

Programmable Hex Voltage Supervisor with EEPROM

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LTC2933
Programmable Hex Voltage
Supervisor with EEPROM
FEATURES
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DESCRIPTION
The
LTC
®
2933
is an EEPROM configurable voltage su-
pervisor which can simultaneously monitor up to six
power supply voltage inputs. Each voltage detector offers
programmable over/undervoltage thresholds in various
ranges and increments.
Two general purpose inputs (GPI) can be configured as
programmable manual reset (MR), UV disable (UVDIS),
margin (MARG) or auxiliary comparator (AUXC) inputs.
Three general purpose pins (GPIO) can be configured for
input or output operation. When configured as an input, a
GPIO pin can be mapped to any other GPIO configured as
output. The GPIO pins can also be configured as
ALERT
or fault outputs. Faults can be configured with program-
mable delay-on-release times. Output type and polarity
are also configurable.
Status and history registers log faults and can be polled
via the I
2
C interface. A fault log snapshot is also backed
up in internal EEPROM. All parameters are programmable
via the I
2
C interface. Configuration EEPROM supports
autonomous operation without additional software.
Supervises 6 Power Supplies
I
2
C Adjustable UV and OV Trip Points
Guaranteed Threshold Accuracy: ±1%
I
2
C/SMBus Interface
Internal EEPROM
256 Programmable Thresholds per Channel
Up to Three Range Settings per Channel
Two General Purpose Inputs
Three General Purpose Inputs/Outputs
Programmable Output Delays
Supply Voltage Range, 3.4V to 13.9V
Supply Voltage Power Sharing from V1 to V4
16-Lead 5mm × 4mm DFN and SSOP Packages
APPLICATIONS
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High Availability Computer Systems
Network Servers
Telecom Equipment
Data Storage
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Precision Multiple Power Supply Supervisor
12V
5V
3.3V
DC/DC
CONVERTERS 2.5V
1.8V
1.5V
100nF
220nF
MR
V1 V2 V3 V4 V5 V6
V
DD33
GPI1
GPI2
GND
ASEL
LTC2933
GPIO1
GPIO2
GPIO3
SDA
SCL
2933 TA01a
Normalized V1 to V6 Threshold
vs Temperature
1.010
NORMALIZED THRESHOLD
1.005
SYSTEM
RST
OV
ALERT
1.000
0.995
0.990
–50
–25
0
25
50
TEMPERATURE (°C)
75
100
2933 TA01b
2933f
For more information
www.linear.com/LTC2933
1

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