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LTC2936CUFD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30
LTC2936
1
2936fa
For more information www.linear.com/LTC2936
Typical applicaTion
DescripTion
Programmable Hex Voltage
Supervisor with EEPROM and
Comparator Outputs
The LT C
®
2936 is an EEPROM configurable voltage super-
visor which can simultaneously monitor up to six power
supply voltage inputs. Each voltage detector offers I
2
C
programmable overvoltage/undervoltage thresholds in
various ranges and increments and a dedicated compara
-
tor output.
Two general purpose inputs (GPI) can be configured as
programmable manual reset (MR), UV disable (UVDIS),
margin (MARG), Write Protect (WP) or auxiliary compara
-
tor (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 programmable 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 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.
FeaTures
applicaTions
n
Supervises 6 Power Supplies
n
I
2
C Adjustable UV and OV Trip Points
n
Guaranteed Threshold Accuracy: ±1% (Maximum)
n
I
2
C/SMBus Interface
n
Internal EEPROM
n
Six Comparator Outputs
n
Fast Comparator Response Time: 7.5µs
n
256 Programmable Thresholds per Channel
n
Three Range Settings per Channel
n
Two General Purpose Inputs
n
Three General Purpose Inputs/Outputs
n
Programmable Output Delays
n
Can Be Powered from 3.3V, or 3.4V to 13.9V
n
24-Pin 4mm × 5mm QFN and SSOP Packages
n
High Availability Computer Systems
n
Network Servers
n
Telecom Equipment
n
Data Storage Systems
V1 to V6 Error vs Temperature
LTC2936
CMP1
CMP2
CMP3
CMP4
CMP5
CMP6
GPI1
GPI2
5V
3.3V
2.5V
1.8V
1.5V
1.2V
GPIO1
GPIO2
GPIO3
SDA
SCL
V1
ASEL0ASEL1
V
DD33
V
PWR
GND
V2 V3 V4 V5 V6
FPGA
SYSTEM
DC/DC
CONVERTERS
12V
OV
RST
ALERT
0.1µF
0.1µF
2936 TA01a
UVDIS
MARG
TEMPERATURE (°C)
–50
THRESHOLD ERROR (%)
1
0.5
0
–0.5
–1
25–25 75
2936 TA01b
1000 50
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.
Patent Pending.
LTC2936
2
2936fa
For more information www.linear.com/LTC2936
absoluTe MaxiMuM raTings
Supply Voltages
V
PWR
.......................................................–0.3V to 14V
V
DD33
.................................................... –0.3V to 3.6V
Digital Input/Output Voltages
SDA, SCL, GPI1, GPI2
.............................. –0.3V to 6V
GPIO1-GPIO3, CMP1-
CMP6 ....................–0.3V to 14V
ASEL0, ASEL1
.....................................–0.3V to V
DD33
Analog Voltages
V1-V6
....................................................... –0.3V to 6V
(Notes 1, 2)
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
GN PACKAGE
24-LEAD PLASTIC SSOP
24
23
22
21
20
19
18
17
16
15
14
13
V3
V2
V1
V
PWR
V
DD33
GND
GPIO3
ASEL0
ASEL1
CMP4
CMP3
CMP2
V4
V5
V6
GPI1
GPI2
SCL
SDA
GPIO1
GPIO2
CMP5
CMP6
CMP1
T
JMAX
= 125°C, θ
JA
= 88°C/W, θ
JCtop
= 30°C/W
8 9
TOP VIEW
25
UFD PACKAGE
24-LEAD (4mm × 5mm) PLASTIC QFN
10 11 12
24 23 22 21 20
6
5
4
3
2
1
V1
V
PWR
V
DD33
GND
GPIO3
ASEL0
ASEL1
GPI1
GPI2
SCL
SDA
GPIO1
GPIO2
CMP5
V2
V3
V4
V5
V6
CMP4
CMP3
CMP2
CMP1
CMP6
7
14
15
16
17
18
19
13
T
JMAX
= 125°C, θ
JA
= 43°C/W, θ
JCbottom
= 3.4°C/W
EXPOSED PAD (PIN 25) IS GND
PCB CONNECTION IS OPTIONAL
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2936CGN#PBF LTC2936CGN#TRPBF LTC2936GN 24-Lead Plastic SSOP 0°C to 70°C
LTC2936IGN#PBF LTC2936IGN#TRPBF LTC2936GN 24-Lead Plastic SSOP –40°C to 85°C
LTC2936CUFD#PBF LTC2936CUFD#TRPBF 2936 24-Lead (4mm × 5mm) Plastic QFN 0°C to 70°C
LTC2936IUFD#PBF LTC2936IUFD#TRPBF 2936 24-Lead (4mm × 5mm) Plastic QFN –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
Operating Temperature Range
LTC2936C
................................................ 0°C to 70°C
LTC2936I
.............................................–40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C*
Maximum Junction Temperature ........................ 125°C*
Lead Temperature Range (Soldering, 10 sec)
SSOP Package
.................................................. 300°C
* See Applications Information section for detailed EEPROM derating
information for junction temperatures in excess of 85°C.
http://www.linear.com/product/LTC2936#orderinfo
LTC2936
3
2936fa
For more information www.linear.com/LTC2936
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C and V
PWR
= 12V (Note 2).
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply Characteristics
V
PWR
V
PWR
Supply Voltage Range
l
3.4 13.9 V
V
DD33
V
DD33
Regulator Output Voltage I
VDD33
= –1mA
l
3.23 3.3 3.37 V
I
DD
V
DD33
Regulator Current Limit V
DD33
= 0V
l
–10 mA
V
DDEXT
V
DD33
Supply Voltage Range V
DD33
= V
PWR
l
3.13 3.3 3.47 V
I
PWR
V
PWR
Supply Current
Writing to EEPROM
l
l
0.7
1.5
mA
mA
I
VDDEXT
V
DDEXT
Supply Current
Writing to EEPROM
l
l
0.7
1.5
mA
mA
Voltage Super
visor Characteristics
V
RANGE
Vn Monitoring Range Precision Range
Low Range
Medium Range
l
l
l
0.2
0.5
1
1.2
3
5.8
V
V
STEP
Vn Threshold Programming Step (LSB) Precision Range
Low Range
Medium Range
4
10
20
mV
V
ERR
Vn Threshold Accuracy Precision Range, 0.6V < Vn < 1.2V
Precision Range, 0.2V < Vn < 0.6V
Low Range, 1.5V < Vn < 3V
Low Range, 0.5V < Vn < 1.5V
Medium Range, 3V < Vn < 5.8V
Medium Range, 1V< Vn <3V
l
l
l
l
l
l
±1
±6
±1
±15
±1
±30
%
mV
%
mV
%
mV
R
IN
Vn Input Impedance Low and Medium Range and High Range
l
400 600 kΩ
I
IN
Vn Input Current Precision Range, 1.2V Input
l
±10 nA
t
RT
Vn Comparator Response Time 2 LSB of Overdrive
20 LSB of Overdrive
l
15
7.5
10
µs
µs
Manual Reset Characteristics
t
MRI
Input Pulse Width Active Low
l
5 µs
t
MRR
Glitch Rejection 1 µs
CMPn Output Characteristics
V
OL
Low Output Voltage I
SINK
= 3mA
l
0.4 V
I
LEAK
Leakage Current V
CMP
= 13.9V
l
±2 µA
I
PU
Internal Pull-up Current V
CMP
= 2V
l
–5 –15 –30 µA
GPIn Characteristics
V
ITH
Input Threshold Voltage
l
0.6 1 1.4 V
I
LEAK
Leakage Current V
GPI
= 6V
l
±2 µA
I
PU
Internal Pull-up Current V
GPI
= 2V
l
–5 –15 –30 µA
Auxiliary Comparator Characteristics
V
ACIN
Input Threshold Voltage
l
0.49 0.5 0.51 V
I
ACIN
Input Current Input Voltage = 0.5V
l
±10 nA
t
ACRT
Response time 40mV Overdrive 25 µs
GPIOn Characteristics
V
OL
Low Output Voltage I
SINK
= 3mA
l
0.4 V
V
ITH
Input Threshold Voltage
l
0.6 1 1.4 V
I
LEAK
Leakage Current V
GPIO
= 13.9V
l
±2 µA
I
PU
Internal Pull-up Current V
GPIO
= 2V
l
–5 –15 –30 µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30

LTC2936CUFD#TRPBF

Mfr. #:
Buy LTC2936CUFD#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Programmable Hex Voltage Supervisor (w/ Comparator Outputs)
Lifecycle:
New from this manufacturer.
Delivery:
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