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LTC2914HDHC-2#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTC2914
1
2914fc
For more information www.linear.com/LTC2914
Quad UV/OV
Positive/Negative
Voltage Monitor
n
Desktop and Notebook Computers
n
Network Servers
n
Core, I/O Voltage Monitors
n
Monitors Four Voltages Simultaneously
n
Adjustable UV and OV Trip Values
n
Guaranteed Threshold Accuracy: ±1.5% of
Monitored Voltage over Temperature
n
Input Glitch Rejection
n
Monitors up to Tw o Negative Voltages
n
Buffered 1V Reference Output
n
Adjustable Reset Timeout with Timeout Disable
n
62µA Quiescent Current
n
Open-Drain OV and UV Outputs
n
Guaranteed OV and UV for V
CC
≥ 1V
n
Available in 16-Lead SSOP and 16-Lead
(5mm × 3mm) DFN Packages
Quad UV/OV Supply Monitor,10% Tolerance, 5V, 3.3V, 2.5V, 1.8V
The LT C
®
2914 is a quad input voltage monitor intended for
monitoring multiple voltages in a variety of applications.
Dual inputs for each monitored voltage allow monitor
-
ing four separate undervoltage (UV) conditions and four
separate overvoltage (OV) conditions. All monitors share
a common undervoltage output and a common overvolt
-
age output. The LTC2914-1 has latching capability for the
overvoltage output. The LTC2914-2 has functionality to
disable both the overvoltage and undervoltage outputs.
Polarity selection and a buffered reference allow monitor
-
ing up to two separate negative voltages. A three-state
input pin allows
setting the polarity of two inputs without
requiring any external
components. Glitch filtering ensures
reliable reset operation without false or noisy triggering.
The LTC2914 provides a precise, versatile, space-con
-
scious, micropower solution for voltage monitoring.
Input Threshold Voltage
vs Temperature
Typical applicaTion
FeaTures
applicaTions
DescripTion
VH1
V
CC
LTC2914-1
SYSTEM
2914 TA01a
0.1μF
GND TMR
VL1
VL2
VH2
REF
VL3
VH3
OV
UV
LATCH
SEL
VL4
C
TMR
22nF
TIMEOUT = 200ms
VH4
1k
4.53k
4.53k
12.4k1k
19.6k4.53k
27.4k1k
44.2k
5V
3.3V
2.5V
1.8V
1k
4.53k
P0WER
SUPPLIES
TEMPERATURE (°C)
–50
0.495
THRESHOLD VOLTAGE, V
OUT
(V)
0.497
0.499
0.501
–25
0
25 50
2914 TA01b
75
0.503
0.505
0.496
0.498
0.500
0.502
0.504
100
L, LT , LT C , LT M , Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
LTC2914
2
2914fc
For more information www.linear.com/LTC2914
Terminal Voltages
V
CC
(Note 3) ............................................. –0.3V to 6V
OV, UV ................................................... –0.3V to 16V
TMR
..........................................–0.3V to (V
CC
+ 0.3V)
VLn, VHn,
LATCH, DIS, SEL ...................–0.3V to 7.5V
Terminal Currents
I
VCC
.................................................................... 10mA
Reference Load Current (I
REF
) ........................... ±1mA
I
UV
, I
OV
...............................................................10mA
(Notes 1, 2)
Operating Temperature Range
LTC2914C ................................................ 0°C to 70°C
LTC2914I .............................................–40°C to 85°C
LTC2914H .......................................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
SSOP ................................................................300°C
absoluTe MaxiMuM raTings
pin conFiguraTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2914CDHC-1#PBF LTC2914CDHC-1#TRPBF 29141 16-Lead Plastic (5mm × 3mm) DFN 0°C to 70°C
LTC2914IDHC-1#PBF LTC2914IDHC-1#TRPBF 29141 16-Lead Plastic (5mm × 3mm) DFN –40°C to 85°C
LTC2914HDHC-1#PBF LTC2914HDHC-1#TRPBF 29141 16-Lead Plastic (5mm × 3mm) DFN –40°C to 125°C
LTC2914CDHC-2#PBF LTC2914CDHC-2#TRPBF 29142 16-Lead Plastic (5mm × 3mm) DFN 0°C to 70°C
LTC2914IDHC-2#PBF LTC2914IDHC-2#TRPBF 29142 16-Lead Plastic (5mm × 3mm) DFN –40°C to 85°C
LTC2914HDHC-2#PBF LTC2914HDHC-2#TRPBF 29142 16-Lead Plastic (5mm × 3mm) DFN –40°C to 125°C
LTC2914CGN-1#PBF LTC2914CGN-1#TRPBF 29141 16-Lead Plastic SSOP 0°C to 70°C
LTC2914IGN-1#PBF LTC2914IGN-1#TRPBF 2914I1 16-Lead Plastic SSOP –40°C to 85°C
LTC2914HGN-1#PBF LTC2914HGN-1#TRPBF 2914H1 16-Lead Plastic SSOP –40°C to 125°C
16
15
14
13
12
11
10
9
17
1
2
3
4
5
6
7
8
V
CC
TMR
SEL
LATCH
/DIS
UV
OV
REF
GND
VH1
VL1
VH2
VL2
VH3
VL3
VH4
VL4
TOP VIEW
DHC PACKAGE
16-LEAD (5mm × 3mm) PLASTIC DFN
T
JMAX
= 150°C, θ
JA
= 43.5°C/W
EXPOSED PAD (PIN 17)
PCB GND CONNECTION OPTIONAL
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
VH1
VL1
VH2
VL2
VH3
VL3
VH4
VL4
V
CC
TMR
SEL
LATCH
/DIS
UV
OV
REF
GND
T
JMAX
= 150°C, θ
JA
= 110°C/W
orDer inForMaTion
LTC2914
3
2914fc
For more information www.linear.com/LTC2914
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2914CGN-2#PBF LTC2914CGN-2#TRPBF 29142 16-Lead Plastic SSOP 0°C to 70°C
LTC2914IGN-2#PBF LTC2914IGN-2#TRPBF 2914I2 16-Lead Plastic SSOP –40°C to 85°C
LTC2914HGN-2#PBF LTC2914HGN-2#TRPBF 2914H2 16-Lead Plastic SSOP –40°C to 125°C
Consult LT C Marketing for parts specified with wider operating temperature ranges.*The temperature grade is identified by a label on the shipping container
Consult LT C Marketing for information on non-standard lead based finish parts.
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/
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V, VLn = 0.45V, VHn = 0.55V, LATCH = V
CC
, SEL = V
CC
,
DIS = Open unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
SHUNT
V
CC
Shunt Regulator Voltage I
CC
= 5mA
l
6.2 6.6 6.9 V
–40ºC < T
A
< 125ºC
l
6.2 6.6 7.0 V
ΔV
SHUNT
V
CC
Shunt Regulator Load Regulation I
CC
= 2mA to 10mA
l
200 300 mV
V
CC
Supply Voltage (Note 3)
l
2.3 V
SHUNT
V
V
CCR(MIN)
Minimum V
CC
Output Valid DIS = 0V
l
1 V
V
CC(UVLO)
Supply Undervoltage Lockout V
CC
Rising, DIS = 0V
l
1.9 2 2.1 V
ΔV
CC(UVHYST)
Supply Undervoltage Lockout Hysteresis DIS = 0V
l
5 25 50 mV
I
CC
Supply Current V
CC
= 2.3V to 6V
l
62 100 µA
V
REF
Reference Output Voltage I
VREF
= ±1mA
l
0.985 1 1.015 V
–40ºC < T
A
< 125ºC
l
0.985 1 1.020 V
V
UOT
Undervoltage/Overvoltage Voltage Threshold
l
492 500 508 mV
t
UOD
Undervoltage/Overvoltage Voltage Threshold
to Output Delay
VHn = V
UOT
– 5mV or VLn = V
UOT
+ 5mV
l
50 125 500 µs
I
VHL
VHn, VLn Input Current
l
±15 nA
–40ºC < T
A
< 125ºC
l
±30 nA
t
UOTO
UV/OV Time-Out Period C
TMR
= 1nF
l
6 8.5 12.5 ms
–40ºC < T
A
< 125ºC
l
6 8.5 14 ms
V
LATCH(IH)
OV Latch Clear Input High
l
1.2 V
V
LATCH(IL)
OV Latch Clear Threshold Input Low
l
0.8 V
I
LATCH
LATCH Input Current V
LATCH
> 0.5V
l
±1 µA
V
DIS(IH)
DIS Input High
l
1.2 V
V
DIS(IL)
DIS Input Low
l
0.8 V
I
DIS
DIS Input Current V
DIS
> 0.5V
l
1 2 3 µA
I
TMR(UP)
TMR Pull-Up Current V
TMR
= 0V
l
–1.3 –2.1 –2.8 µA
–40ºC < T
A
< 125ºC
l
–1.2 –2.1 –2.8 µA
I
TMR(DOWN)
TMR Pull-Down Current V
TMR
= 1.6V
l
1.3 2.1 2.8 µA
–40ºC < T
A
< 125ºC
l
1.2 2.1 2.8 µA
elecTrical characTerisTics
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTC2914HDHC-2#PBF

Mfr. #:
Buy LTC2914HDHC-2#PBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits 4x UV/OV Pos/Neg V Mon
Lifecycle:
New from this manufacturer.
Delivery:
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