LTC2933
Programmable Hex Voltage
Supervisor with EEPROM
Fea T Descrip T
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Supervises 6 Power Supplies The LTC 2933 is an EEPROM configurable voltage super-
2
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I C Adjustable UV and OV Trip Points visor which can simultaneously monitor up to six power
2
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Guaranteed Threshold Accuracy: 1% supply voltage inputs. Each voltage detector offers I C
2
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I C/SMBus Interface programmable over/undervoltage thresholds in various
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Internal EEPROM ranges and increments.
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256 Programmable Thresholds per Channel
Two general purpose inputs (GPI) can be configured as
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Up to Three Range Settings per Channel
programmable manual reset (MR), UV disable (UVDIS),
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Two General Purpose Inputs
margin (MARG) or auxiliary comparator (AUXC) inputs.
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Three General Purpose Inputs/Outputs
Three general purpose pins (GPIO) can be configured for
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Programmable Output Delays
input or output operation. When configured as an input, a
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Supply Voltage Range: 3.4V to 13.9V
GPIO pin can be mapped to any other GPIO configured as
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Supply Voltage Power Sharing from V1 to V4
output. The GPIO pins can also be configured as ALERT
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16-Pin 5mm 4mm DFN and SSOP Packages
or fault outputs. Faults can be configured with program-
mable delay-on-release times. Output type and polarity
a T
are also configurable.
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High Availability Computer Systems
Status and history registers log faults and can be polled
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Network Servers
2
via the I C interface. A fault snapshot is also backed up
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Telecom Equipment
in internal EEPROM. All parameters are programmable
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Data Storage Systems
2
via the I C interface. Configuration EEPROM supports
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
autonomous operation without additional software.
Technology Corporation. All other trademarks are the property of their respective owners.
Typical a T
Precision Multiple Power Supply Supervisor V1 to V6 Threshold Error
vs Temperature
1
12V
5V
3.3V
0.5
DC/DC
2.5V
CONVERTERS
1.8V
1.5V
0
100nF
SYSTEM
V1 V2 V3 V4 V5 V6
220nF RST
V GPIO1
0.5
DD33
OV
GPIO2
LTC2933
MR ALERT
GPI1 GPIO3
1
SDA
GPI2
50 25 0 25 50 75 100
GND ASEL SCL
TEMPERATURE (C)
2933 TA01b
2933 TA01a
2933fa
1
For more information www.linear.com/LTC2933
THRESHOLD ERROR (%)
ion pplica
ions pplica
ion uresLTC2933
a Te Maxi Mu M r a T (Notes 1, 2)
Supply Voltages: Operating Temperature Range:
V1 .......................................................... 0.3V to 14V LTC2933C ................................................ 0C to 70C
V2, V3, V4 ................................................ 0.3V to 6V LTC2933I .............................................40C to 85C
Input/Output Voltages: Storage Temperature Range ................ 65C to 150C*
SDA, SCL, GPI1, GPI2, V5, V6 .................. 0.3V to 6V Maximum Junction Temperature ........................ 125C*
GPIO1, GPIO2, GPIO3 ............................ 0.3V to 14V Lead Temperature Range (Soldering, 10 sec):
V .................................................... 0.3V to 3.6V SSOP Package ..................................................300C
DD33
ASEL ...................................................0.3V to V
DD33
* See Applications Information section for detailed EEPROM derating
information for junction temperatures in excess of 85C.
p in c F T
TOP VIEW
TOP VIEW
V4 1 16 V5
V4 1 16 V5
V3 2 15 V6
V3 2 15 V6
V2 3 14 GPI1
V2 3 14 GPI1
V1 4 13 GPI2
17
V1 4 13 GPI2
V 5 12 SCL
DD33
V 5 12 SCL
DD33
GND 6 11 SDA
GND 6 11 SDA
GPIO3 7 10 GPIO1
GPIO3 7 10 GPIO1
ASEL 8 9 GPIO2
8 GPIO2
ASEL 9
DHD16 PACKAGE
GN PACKAGE
16-LEAD (5mm 4mm) PLASTIC DFN
16-LEAD PLASTIC SSOP NARROW
T = 125C, = 41.7C/W, = 4.3C/W
JMAX JA JCbottom
T = 125C, = 110C/W, = 40C/W
JMAX JA JCtop
EXPOSED PAD (PIN 17) PCB GND CONNECTION OPTIONAL
o r Der i n F Ma T