FEATURES
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LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
Micropower, Low Voltage
Comparator with
400mV Reference
DESCRIPTION
The LT
®
6703-2/LT6703-3/LT6703HV-2/LT6703HV-3 com-
bine a micropower, low voltage comparator with a 400mV
reference in a tiny DFN package. Operating with supplies
from 1.4V up to 18V, these devices draw only 6.5μA, making
them ideal for low voltage system monitoring. Hysteresis
is included in the comparator, ensuring stable operation.
The comparator has one input available externally while
the other input is connected internally to the reference.
The comparator output is open collector and the output
load can be referred to any voltage up to 18V (36V for
LT6703HV) independent of supply voltage. The output
stage has a guaranteed current sink capability of more
than 5mA over temperature.
The two versions of this part differ by the polarity of the
available comparator input. The LT6703-2/LT6703HV-2
has an inverting input and the LT6703-3/LT6703HV-3 has
a noninverting input. Both versions are offered in com-
mercial, industrial and automotive temperature ranges.
L,
LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered
trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
Internal 400mV Reference
Total Threshold Error: ±1.25% Max at 25°C
Wide Supply Range: 1.4V to 18V
Input and Output Operate to 36V
Specified for –40°C to 125°C Temperature Range
Low Quiescent Current: 6.5μA Typ at 5V
Internal Hysteresis: 6.5mV Typ
Low Input Bias Current: ±10nA Max
Over-The-Top
®
Input also Includes Ground
Open-Collector Output Allows Level Translation
Choice of Input Polarities: LT6703-2/LT6703-3/
LT6703HV-2/LT6703HV-3
Available in 2mm
×
2mm DFN and
Low Profile (1mm) SOT-23 (ThinSOT™) Packages
APPLICATIONS
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n
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Battery-Powered System Monitoring
Threshold Detectors
Window Comparators
Relay Driving
Industrial Control Systems
Handheld Instruments
Automotive Monitor and Controls
TYPICAL APPLICATION
Micropower Supply Voltage Monitor
1.4V ≤ V
IN
≤ 18V
(V
TH
= 3V)
Rising Input Threshold Voltage vs Temperature
RISING INPUT THRESHOLD VOLTAGE (mV)
404
403
402
401
400
399
398
397
#4
#2
#1
FOUR TYPICAL PARTS
V
S
= 5V
1MΩ
LT6703-3
+IN
V
S
1MΩ
+
OUT
#3
0.1μF
154k
–
400mV
REFERENCE
GND
V
S
670323 TA01
396
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
670323 TA01b
670323fd
1
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
S
to GND) ..........................18.5V
Input Voltage (+IN, –IN)
(Note 3)....................................... 18.5V to (GND – 0.3V)
LT6703HV .................................. 40V to (GND – 0.3V)
Output Voltage (OUT).................. 18.5V to (GND – 0.3V)
LT6703HV .................................. 40V to (GND – 0.3V)
Output Short-Circuit Duration (Note 2) ............ Indefinite
Input Current (Note 3)..........................................–10mA
Operating Temperature Range (Note 4)
LT6703C-2/-3/LT6703HVC-2/-3 ...........–40°C to 85°C
LT6703I-2/-3/LT6703HVI-2/-3 .............–40°C to 85°C
LT6703H-2/-3/LT6703HVH-2/-3 ........–40°C to 125°C
Specified Temperature Range (Note 5)
LT6703C-2/-3/LT6703HVC-2/-3 .............. 0°C to 70°C
LT6703I-2/-3/LT6703HVI-2/-3 .............–40°C to 85°C
LT6703H-2/-3/LT6703HVH-2/-3 ........–40°C to 125°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range...................–65°C to 125°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PIN CONFIGURATION
LT6703-2
TOP VIEW
LT6703-3
TOP VIEW
4
4
1
OUT
2
V
S
3
–IN
1
OUT
2
V
S
3
+IN
5 NC
4 V
S
DC PACKAGE
3-LEAD (2mm
×
2mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 102°C/W
EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
DC PACKAGE
3-LEAD (2mm
×
2mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 102°C/W
EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
LT6703HV-2
TOP VIEW
OUT 1
GND 2
–IN 3
4 V
S
5 NC
LT6703HV-3
TOP VIEW
OUT 1
GND 2
+IN 3
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 125°C,
θ
JA
= 250°C/W
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 125°C,
θ
JA
= 250°C/W
670323fd
2
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
LT6703CDC-2#TRMPBF
LT6703IDC-2#TRMPBF
LT6703HDC-2#TRMPBF
LT6703CDC-3#TRMPBF
LT6703IDC-3#TRMPBF
LT6703HDC-3#TRMPBF
LT6703HVCS5-2#TRMPBF
LT6703HVIS5-2#TRMPBF
LT6703HVHS5-2#TRMPBF
LT6703HVCS5-3#TRMPBF
LT6703HVIS5-3#TRMPBF
TAPE AND REEL
LT6703CDC-2#TRPBF
LT6703IDC-2#TRPBF
LT6703HDC-2#TRPBF
LT6703CDC-3#TRPBF
LT6703IDC-3#TRPBF
LT6703HDC-3#TRPBF
LT6703HVCS5-2#TRPBF
LT6703HVIS5-2#TRPBF
LT6703HVHS5-2#TRPBF
LT6703HVCS5-3#TRPBF
LT6703HVIS5-3#TRPBF
PART MARKING*
LCWP
LCWP
LCWP
LCTW
LCTW
LCTW
LTDMN
LTDMN
LTDMN
LTDMP
LTDMP
PACKAGE DESCRIPTION
3-Lead (2mm
×
2mm) Plastic DFN
3-Lead (2mm
×
2mm) Plastic DFN
3-Lead (2mm
×
2mm) Plastic DFN
3-Lead (2mm
×
2mm) Plastic DFN
3-Lead (2mm
×
2mm) Plastic DFN
3-Lead (2mm
×
2mm) Plastic DFN
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
– 40°C to 85°C
– 40°C to 125°C
0°C to 70°C
– 40°C to 85°C
– 40°C to 125°C
0°C to 70°C
– 40°C to 85°C
– 40°C to 125°C
0°C to 70°C
– 40°C to 85°C
– 40°C to 125°C
LT6703HVHS5-3#TRMPBF LT6703HVHS5-3#TRPBF LTDMP
5-Lead Plastic TSOT-23
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on 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/
ELECTRICAL CHARACTERISTICS
SYMBOL
V
TH(R)
V
TH(F)
HYS
I
B
PARAMETER
Rising Input Threshold Voltage (Note 6)
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
T
A
= 25°C (LT6703-2/LT6703-3) unless otherwise specified.
MIN
395
387
3.5
TYP
400
393.5
6.5
±0.01
±0.01
±4
70
0.01
0.01
18
29
2.2
0.22
6.5
11
MAX
405
400
9.5
±10
±10
±10
200
0.8
0.8
UNITS
mV
mV
mV
nA
nA
nA
mV
μA
μA
μs
μs
μs
μs
μA
CONDITIONS
R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V
V
S
= 1.4V, 18V, V
IN
= 0.1V
10mV Input Overdrive, V
S
= 5V, I
OUT
= 5mA
V
S
= 1.4V, 18V, V
OUT
= V
S
, V
IN
= 40mV Overdrive
V
S
= 1.4V, V
OUT
= 18V, V
IN
= 40mV Overdrive
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k,
V
OL
= 400mV
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k,
V
OH
= 0.9 • V
S
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k
V
O
= (0.1 to 0.9) • V
S
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k
V
O
= (0.1 to 0.9) • V
S
No Load Current, V
S
= 5V
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
OL
I
OFF
t
PD(HL)
t
PD(LH)
t
r
t
f
I
S
Output Low Voltage
Output Leakage Current
High-to-Low Propagation Delay
Low-to-High Propagation Delay
Output Rise Time
Output Fall Time
Supply Current
670323fd
3
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ELECTRICAL CHARACTERISTICS
SYMBOL
V
TH(R)
V
TH(F)
HYS
I
B
PARAMETER
Rising Input Threshold Voltage (Note 6)
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
The
l
denotes the specifications which apply over the temperature range of
0°C ≤ T
A
≤ 70°C, (LT6703C-2/LT6703C-3) unless otherwise specified (Notes 4, 5).
CONDITIONS
R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V
V
S
= 1.4V, 18V, V
IN
= 0.1V
10mV Input Overdrive, V
S
= 5V, I
OUT
= 5mA
V
S
= 1.4V, 18V, V
OUT
= V
S
, V
IN
= 40mV Overdrive
V
S
= 1.4V, V
OUT
= 18V, V
IN
= 40mV Overdrive
No Load Current, V
S
= 5V
l
l
l
l
l
l
l
l
l
l
MIN
392.5
384.5
3
TYP
MAX
407.5
402.5
11
±15
±15
±15
250
1
1
14
UNITS
mV
mV
mV
nA
nA
nA
mV
μA
μA
μA
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
OL
I
OFF
I
S
Output Low Voltage
Output Leakage Current
Supply Current
The
l
denotes the specifications which apply over the temperature range of –40°C ≤ T
A
≤ 85°C, (LT6703I-2/LT6703I-3) unless otherwise
specified (Notes 4, 5).
SYMBOL
V
TH(R)
V
TH(F)
HYS
I
B
PARAMETER
Rising Input Threshold Voltage (Note 6)
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
CONDITIONS
R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V
V
S
= 1.4V, 18V, V
IN
= 0.1V
10mV Input Overdrive, V
S
= 5V, I
OUT
= 5mA
V
S
= 1.4V, 18V, V
OUT
= V
S
, V
IN
= 40mV Overdrive
V
S
= 1.4V, V
OUT
= 18V, V
IN
= 40mV Overdrive
No Load Current, V
S
= 5V
l
l
l
l
l
l
l
l
l
l
MIN
392
383.5
2
TYP
MAX
408
403.5
11.5
±15
±15
±15
250
1
1
15
UNITS
mV
mV
mV
nA
nA
nA
mV
μA
μA
μA
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
OL
I
OFF
I
S
Output Low Voltage
Output Leakage Current
Supply Current
The
l
denotes the specifications which apply over the temperature range of –40°C ≤ T
A
≤ 125°C, (LT6703H-2/LT6703H-3) unless
otherwise specified (Notes 4, 5).
SYMBOL
V
TH(R)
V
TH(F)
HYS
I
B
PARAMETER
Rising Input Threshold Voltage (Note 6)
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
CONDITIONS
R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V
V
S
= 1.4V, 18V, V
IN
= 0.1V
10mV Input Overdrive, V
S
= 5V, I
OUT
= 5mA
V
S
= 1.4V, 18V, V
OUT
= V
S
, V
IN
= 40mV Overdrive
V
S
= 1.4V, V
OUT
= 18V, V
IN
= 40mV Overdrive
No Load Current, V
S
= 5V
l
l
l
l
l
l
l
l
l
l
MIN
392
382.5
2
TYP
MAX
410
404.5
13.5
±45
±45
±50
250
1
1
17
UNITS
mV
mV
mV
nA
nA
nA
mV
μA
μA
μA
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
OL
I
OFF
I
S
Output Low Voltage
Output Leakage Current
Supply Current
670323fd
4
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ELECTRICAL CHARACTERISTICS
SYMBOL
V
TH(R)
V
TH(F
)
HYS
I
B
PARAMETER
Rising Input Threshold Voltage (Note 6)
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
T
A
= 25°C, (LT6703HV-2/LT6703HV-3) unless otherwise specified.
MIN
395
387
3.5
TYP
400
393.5
6.5
±0.01
±0.01
±4
70
0.01
0.01
18
29
2.2
0.22
6.5
11
MAX
405
400
9.5
±10
±10
±10
200
0.8
0.8
UNITS
mV
mV
mV
nA
nA
nA
mV
μA
μA
μs
μs
μs
μs
μA
CONDITIONS
R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V, 36V
V
S
= 1.4V, 18V, V
IN
= 0.1V
10mV Input Overdrive, V
S
= 5V, I
OUT
= 5mA
V
S
= 1.4V, 18V, V
OUT
= V
S
, V
IN
= 40mV Overdrive
V
S
= 18V, V
OUT
= 18V, (36V, R
L
= 100k), V
IN
= 40mV Overdrive
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k,
V
OL
= 400mV
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k,
V
OH
= 0.9 • V
S
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k
V
O
= (0.1 to 0.9) • V
S
V
S
= 5V, 10mV Input Overdrive, R
L
= 10k
V
O
= (0.1 to 0.9) • V
S
No Load Current, V
S
= 5V
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
OL
I
OFF
t
PD(HL)
t
PD(LH)
t
r
t
f
I
S
Output Low Voltage
Output Leakage Current
High-to-Low Propagation Delay
Low-to-High Propagation Delay
Output Rise Time
Output Fall Time
Supply Current
The
l
denotes the specifications which apply over the temperature range of 0°C ≤ T
A
≤ 70°C, (LT6703HVC-2/LT6703HVC-3) unless
otherwise specified (Notes 4, 5).
SYMBOL PARAMETER
V
TH(R)
V
TH(F)
HYS
I
B
Rising Input Threshold Voltage (Note 6)
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
CONDITIONS
R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V, 36V
V
S
= 1.4V, 18V, V
IN
= 0.1V
10mV Input Overdrive, V
S
= 5V, I
OUT
= 5mA
V
S
= 1.4V, 18V, V
OUT
= V
S
, V
IN
= 40mV Overdrive
V
S
= 18V, V
OUT
= 18V, (36V, R
L
= 100k), V
IN
= 40mV Overdrive
No Load Current, V
S
= 5V
l
l
l
l
l
l
l
l
l
l
MIN
392.5
384.5
3
TYP
MAX
407.5
402.5
11
±15
±15
±15
250
1
1
14
UNITS
mV
mV
mV
nA
nA
nA
mV
μA
μA
μA
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
V
OL
I
OFF
I
S
Output Low Voltage
Output Leakage Current
Supply Current
The
l
denotes the specifications which apply over the temperature range of –40°C ≤ T
A
≤ 85°C, (LT6703HVI-2/LT6703HVI-3) unless
otherwise specified (Notes 4, 5).
SYMBOL
V
TH(R)
V
TH(F)
HYS
I
B
PARAMETER
CONDITIONS
l
l
l
l
l
l
MIN
392
383.5
2
TYP
MAX
408
403.5
11.5
±15
±15
±15
UNITS
mV
mV
mV
nA
nA
nA
Rising Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
Falling Input Threshold Voltage (Note 6) R
L
= 100k, V
O
= 2V Swing, V
S
= 5V
HYS = V
TH(R)
– V
TH(F)
Input Bias Current
V
S
= 5V, R
L
= 100k, V
O
= 2V Swing
V
S
= 1.4V, 18V, V
IN
= V
S
V
S
= 1.4V, V
IN
= 18V, 36V
V
S
= 1.4V, 18V, V
IN
= 0.1V
670323fd
5
嵌入式系统
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