LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
Micropower, Low Voltage
Comparator with
400mV Reference
DESCRIPTION
FEATURES
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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
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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 commercial, industrial and automotive temperature ranges.
APPLICATIONS
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The LT®6703-2/LT6703-3/LT6703HV-2/LT6703HV-3 combine 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.
Battery-Powered System Monitoring
Threshold Detectors
Window Comparators
Relay Driving
Industrial Control Systems
Handheld Instruments
Automotive Monitor and Controls
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.
TYPICAL APPLICATION
Rising Input Threshold Voltage vs Temperature
1.4V ≤ VIN ≤ 18V
(VTH = 3V)
1MΩ
VS
LT6703-3
+IN
1MΩ
+
OUT
0.1μF
–
154k
400mV
REFERENCE
GND
VS
670323 TA01
RISING INPUT THRESHOLD VOLTAGE (mV)
Micropower Supply Voltage Monitor
404
403
FOUR TYPICAL PARTS
VS = 5V
#1
402
401
400
#2
#3
399
398
397
#4
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 (VS 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
LT6703-3
TOP VIEW
TOP VIEW
4
VS
–IN
DC PACKAGE
3-LEAD (2mm × 2mm) PLASTIC DFN
TJMAX = 125°C, θJA = 102°C/W
EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
LT6703HV-2
1
2
3
+IN
3
VS
2
OUT
1
OUT
4
DC PACKAGE
3-LEAD (2mm × 2mm) PLASTIC DFN
TJMAX = 125°C, θJA = 102°C/W
EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
LT6703HV-3
TOP VIEW
OUT 1
TOP VIEW
5 NC
GND 2
–IN 3
OUT 1
5 NC
GND 2
4 VS
+IN 3
4 VS
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
TJMAX = 125°C, θJA = 250°C/W
TJMAX = 125°C, θJA = 250°C/W
670323fd
2
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
LT6703CDC-2#TRMPBF
LT6703IDC-2#TRMPBF
LT6703CDC-2#TRPBF
LCWP
3-Lead (2mm × 2mm) Plastic DFN
0°C to 70°C
LT6703IDC-2#TRPBF
LCWP
3-Lead (2mm × 2mm) Plastic DFN
– 40°C to 85°C
LT6703HDC-2#TRMPBF
LT6703HDC-2#TRPBF
LCWP
3-Lead (2mm × 2mm) Plastic DFN
– 40°C to 125°C
LT6703CDC-3#TRMPBF
LT6703CDC-3#TRPBF
LCTW
3-Lead (2mm × 2mm) Plastic DFN
0°C to 70°C
LT6703IDC-3#TRMPBF
LT6703IDC-3#TRPBF
LCTW
3-Lead (2mm × 2mm) Plastic DFN
– 40°C to 85°C
LT6703HDC-3#TRMPBF
LT6703HDC-3#TRPBF
LCTW
3-Lead (2mm × 2mm) Plastic DFN
– 40°C to 125°C
LT6703HVCS5-2#TRMPBF
LT6703HVCS5-2#TRPBF
LTDMN
5-Lead Plastic TSOT-23
0°C to 70°C
LT6703HVIS5-2#TRMPBF
LT6703HVIS5-2#TRPBF
LTDMN
5-Lead Plastic TSOT-23
– 40°C to 85°C
LT6703HVHS5-2#TRMPBF
LT6703HVHS5-2#TRPBF
LTDMN
5-Lead Plastic TSOT-23
– 40°C to 125°C
LT6703HVCS5-3#TRMPBF
LT6703HVCS5-3#TRPBF
LTDMP
5-Lead Plastic TSOT-23
0°C to 70°C
LT6703HVIS5-3#TRMPBF
LT6703HVIS5-3#TRPBF
LTDMP
5-Lead Plastic TSOT-23
– 40°C to 85°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
– 40°C to 125°C
TA = 25°C (LT6703-2/LT6703-3) unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VTH(R)
Rising Input Threshold Voltage (Note 6)
RL = 100k, VO = 2V Swing, VS = 5V
395
400
405
mV
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
387
393.5
400
mV
HYS
HYS = VTH(R) – VTH(F)
VS = 5V, RL = 100k, VO = 2V Swing
3.5
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V
VS = 1.4V, 18V, VIN = 0.1V
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive
VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive
tPD(HL)
High-to-Low Propagation Delay
VS = 5V, 10mV Input Overdrive, RL = 10k,
VOL = 400mV
18
μs
tPD(LH)
Low-to-High Propagation Delay
VS = 5V, 10mV Input Overdrive, RL = 10k,
VOH = 0.9 • VS
29
μs
tr
Output Rise Time
VS = 5V, 10mV Input Overdrive, RL = 10k
VO = (0.1 to 0.9) • VS
2.2
μs
tf
Output Fall Time
VS = 5V, 10mV Input Overdrive, RL = 10k
VO = (0.1 to 0.9) • VS
0.22
μs
IS
Supply Current
No Load Current, VS = 5V
6.5
6.5
9.5
mV
±0.01
±0.01
±4
±10
±10
±10
nA
nA
nA
70
200
mV
0.01
0.01
0.8
0.8
μA
μA
11
μA
670323fd
3
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of
0°C ≤ TA ≤ 70°C, (LT6703C-2/LT6703C-3) unless otherwise specified (Notes 4, 5).
SYMBOL
PARAMETER
CONDITIONS
MAX
UNITS
VTH(R)
Rising Input Threshold Voltage (Note 6)
RL = 100k, VO = 2V Swing, VS = 5V
l
392.5
MIN
TYP
407.5
mV
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
l
384.5
402.5
mV
HYS
HYS = VTH(R) – VTH(F)
VS = 5V, RL = 100k, VO = 2V Swing
l
3
11
mV
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V
VS = 1.4V, 18V, VIN = 0.1V
l
l
l
±15
±15
±15
nA
nA
nA
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
l
250
mV
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive
VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive
l
l
1
1
μA
μA
IS
Supply Current
No Load Current, VS = 5V
l
14
μA
The l denotes the specifications which apply over the temperature range of –40°C ≤ TA ≤ 85°C, (LT6703I-2/LT6703I-3) unless otherwise
specified (Notes 4, 5).
SYMBOL
PARAMETER
CONDITIONS
MIN
VTH(R)
Rising Input Threshold Voltage (Note 6)
RL = 100k, VO = 2V Swing, VS = 5V
l
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
HYS
HYS = VTH(R) – VTH(F)
TYP
MAX
UNITS
392
408
mV
l
383.5
403.5
mV
VS = 5V, RL = 100k, VO = 2V Swing
l
2
11.5
mV
±15
±15
±15
nA
nA
nA
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V
VS = 1.4V, 18V, VIN = 0.1V
l
l
l
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
l
250
mV
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive
VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive
l
l
1
1
μA
μA
IS
Supply Current
No Load Current, VS = 5V
l
15
μA
The l denotes the specifications which apply over the temperature range of –40°C ≤ TA ≤ 125°C, (LT6703H-2/LT6703H-3) unless
otherwise specified (Notes 4, 5).
SYMBOL
PARAMETER
CONDITIONS
MIN
VTH(R)
Rising Input Threshold Voltage (Note 6)
RL = 100k, VO = 2V Swing, VS = 5V
l
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
l
HYS
HYS = VTH(R) – VTH(F)
VS = 5V, RL = 100k, VO = 2V Swing
l
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V
VS = 1.4V, 18V, VIN = 0.1V
VOL
Output Low Voltage
IOFF
IS
TYP
MAX
UNITS
392
410
mV
382.5
404.5
mV
2
13.5
mV
l
l
l
±45
±45
±50
nA
nA
nA
10mV Input Overdrive, VS = 5V, IOUT = 5mA
l
250
mV
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive
VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive
l
l
1
1
μA
μA
Supply Current
No Load Current, VS = 5V
l
17
μA
670323fd
4
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ELECTRICAL CHARACTERISTICS
TA = 25°C, (LT6703HV-2/LT6703HV-3) unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VTH(R)
Rising Input Threshold Voltage (Note 6)
RL = 100k, VO = 2V Swing, VS = 5V
395
400
405
mV
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
387
393.5
400
mV
HYS
HYS = VTH(R) – VTH(F)
VS = 5V, RL = 100k, VO = 2V Swing
3.5
6.5
9.5
mV
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V, 36V
VS = 1.4V, 18V, VIN = 0.1V
±0.01
±0.01
±4
±10
±10
±10
nA
nA
nA
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
70
200
mV
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS, VIN = 40mV Overdrive
VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive
0.01
0.01
0.8
0.8
μA
μA
tPD(HL)
High-to-Low Propagation Delay
VS = 5V, 10mV Input Overdrive, RL = 10k,
VOL = 400mV
18
μs
tPD(LH)
Low-to-High Propagation Delay
VS = 5V, 10mV Input Overdrive, RL = 10k,
VOH = 0.9 • VS
29
μs
tr
Output Rise Time
VS = 5V, 10mV Input Overdrive, RL = 10k
VO = (0.1 to 0.9) • VS
2.2
μs
tf
Output Fall Time
VS = 5V, 10mV Input Overdrive, RL = 10k
VO = (0.1 to 0.9) • VS
0.22
μs
IS
Supply Current
No Load Current, VS = 5V
6.5
11
μA
The l denotes the specifications which apply over the temperature range of 0°C ≤ TA ≤ 70°C, (LT6703HVC-2/LT6703HVC-3) unless
otherwise specified (Notes 4, 5).
SYMBOL PARAMETER
MAX
UNITS
VTH(R)
Rising Input Threshold Voltage (Note 6)
CONDITIONS
RL = 100k, VO = 2V Swing, VS = 5V
l
392.5
MIN
TYP
407.5
mV
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
l
384.5
402.5
mV
HYS
HYS = VTH(R) – VTH(F)
VS = 5V, RL = 100k, VO = 2V Swing
l
3
11
mV
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V, 36V
VS = 1.4V, 18V, VIN = 0.1V
l
l
l
±15
±15
±15
nA
nA
nA
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
l
250
mV
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS, VIN = 40mV Overdrive
VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive
l
l
1
1
μA
μA
IS
Supply Current
No Load Current, VS = 5V
l
14
μA
The l denotes the specifications which apply over the temperature range of –40°C ≤ TA ≤ 85°C, (LT6703HVI-2/LT6703HVI-3) unless
otherwise specified (Notes 4, 5).
SYMBOL
PARAMETER
MAX
UNITS
VTH(R)
Rising Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
CONDITIONS
l
MIN
392
TYP
408
mV
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
l
383.5
403.5
mV
HYS
HYS = VTH(R) – VTH(F)
VS = 5V, RL = 100k, VO = 2V Swing
l
2
11.5
mV
IB
Input Bias Current
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V, 36V
VS = 1.4V, 18V, VIN = 0.1V
l
l
l
±15
±15
±15
nA
nA
nA
670323fd
5
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of
–40°C ≤ TA ≤ 85°C, (LT6703HVI-2/LT6703HVI-3) unless otherwise specified (Notes 4, 5).
SYMBOL
PARAMETER
CONDITIONS
MAX
UNITS
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
l
MIN
TYP
250
mV
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS, VIN = 40mV Overdrive
VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive
l
l
1
1
μA
μA
IS
Supply Current
No Load Current, VS = 5V
l
15
μA
The l denotes the specifications which apply over the temperature range of –40°C ≤ TA ≤ 125°C, (LT6703HVH-2/LT6703HVH-3) unless
otherwise specified (Notes 4, 5).
SYMBOL
PARAMETER
CONDITIONS
MAX
UNITS
VTH(R)
Rising Input Threshold Voltage (Note 6)
RL = 100k, VO = 2V Swing, VS = 5V
l
392
410
mV
VTH(F)
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
l
382.5
404.5
mV
VS = 5V, RL = 100k, VO = 2V Swing
l
HYS
HYS = VTH(R) – VTH(F)
IB
Input Bias Current
2
13.5
mV
VS = 1.4V, 18V, VIN = VS
VS = 1.4V, VIN = 18V, 36V
VS = 1.4V, 18V, VIN = 0.1V
l
l
l
±45
±45
±50
nA
nA
nA
VOL
Output Low Voltage
10mV Input Overdrive, VS = 5V, IOUT = 5mA
l
250
mV
IOFF
Output Leakage Current
VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive
VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive
l
l
1
1
μA
μA
IS
Supply Current
No Load Current, VS = 5V
l
17.0
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output is shorted
indefinitely.
Note 3: The inputs are protected by ESD diodes to the ground pin. If the
input voltage exceeds –0.3V below ground, the input current should be
limited to less than 10mA.
Note 4: The LT6703C-2/-3/LT6703HVC-2/-3, and LT6703I-2/-3/LT6703HVI2/-3 are guaranteed functional over the operating temperature range of
–40°C to 85°C.
MIN
TYP
The LT6703H-2/-3/LT6703HVH-2/-3, is guaranteed functional over the
operating temperature range of –40°C to 125°C.
Note 5: The LT6703C-2/-3/LT6703HVC-2/-3, are guaranteed to meet the
specified performance from 0°C to 70°C. The LT6703C-2/-3/LT6703HVC2/-3 are designed, characterized and expected to meet specified
performance from –40°C to 85°C but are not tested or QA sampled at
these temperatures. The LT6703I-2/-3/LT6703HVI-2/-3, are guaranteed
to meet specified performance from –40°C to 85°C. The LT6703H-2/3/LT6703HVH-2/-3, is guaranteed to meet specified performance from
–40°C to 125°C.
Note 6: VTH defines the threshold voltage of the comparator and combines
the effect of offset and reference accuracy.
PIN FUNCTIONS
OUT: Open-Collector Output of Comparator. This pin
provides drive for up to 40mA of load current. Off-state
voltage may be as high as 18V (36V for LT6703HV) above
GND, regardless of VS used.
GND: Ground. This pin is also the low side return of the
internal 400mV reference.
IN: External Input for Comparator. The voltage on this
pin can range from –0.3V to 18V (36V for LT6703HV)
with respect to GND regardless of VS used. The input is
noninverting for the LT6703-3/LT6703HV-3, and inverting
for the LT6703-2/LT6703HV-2. The other comparator input
is internally connected to the 400mV reference.
VS: Supply Voltage. The parts are characterized for operation with 1.4V ≤ VS ≤ 18V with respect to GND.
670323fd
6
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
PIN FUNCTIONS
VS
VS
LT6703-3
LT6703HV-3
LT6703-2
LT6703HV-2
–IN
–
+IN
+
OUT
OUT
+
–
400mV
REFERENCE
VS
VS
400mV
REFERENCE
670323 PF02
670323 PF03
GND
GND
TYPICAL PERFORMANCE CHARACTERISTICS
Distribution of Rising Input
Threshold Voltage
VS = 5V
TA = 25°C
14
12
10
8
6
4
18
12
10
8
6
14
12
10
8
6
4
2
2
2
0
0
388
390
392
394
396
398
400
FALLING INPUT THRESHOLD VOLTAGE (mV)
0
#1
402
401
400
#2
#3
399
398
397
#4
5.6
6.4
7.2
HYSTERESIS (mV)
403.0
402.5
402.0
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
401.5
401.0
400.5
400.0
399.5
396
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
399.0
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
670323 G04
670323 G05
8
8.8
Rising Input Threshold Voltage
vs Supply Voltage
RISING INPUT THRESHOLD VOLTAGE (mV)
403
4.8
670323 G03
Rising Input Threshold Voltage
vs Temperature
RISING INPUT THRESHOLD VOLTAGE (mV)
Rising Input Threshold Voltage
vs Temperature
FOUR TYPICAL PARTS
VS = 5V
4
670323 G02
670323 G01
404
VS = 5V
TA = 25°C
16
14
4
394
396
398
400
402
404
406
RISING INPUT THRESHOLD VOLTAGE (mV)
RISING INPUT THRESHOLD VOLTAGE (mV)
Distribution of Hysteresis
20
VS = 5V
TA = 25°C
16
PERCENT OF UNITS (%)
PERCENT OF UNITS (%)
16
18
PERCENT OF UNITS (%)
18
Distribution of Falling Input
Threshold Voltage
403.0
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
402.5
402.0
401.5
401.0
400.5
400.0
399.5
399.0
2
4
8 10 12 14
6
SUPPLY VOLTAGE (V)
16
18
670323 G06
670323fd
7
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
TYPICAL PERFORMANCE CHARACTERISTICS
Hysteresis vs Temperature
Hysteresis vs Temperature
10
10
5
6
5
6
5
4
4
3
3
3
2
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
2
–60 –40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
2
670323 G07
670323 G08
10
TA = 25°C
TA = 85°C
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
TA = 125°C
TA = –55°C
–5
0.9
1.1
1.3
1.7
1.5
SUPPLY VOLTAGE (V)
8
7
6
10
670323 G10
1000
10
0.1
1
10
0.01
OUTPUT SINK CURRENT (mA)
100
670323 G13
0.2
0
0.4 0.6 0.8 1.0 1.2
SUPPLY VOLTAGE (V)
100
Supply Current
vs Output Sink Current
1000
TA = 25°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
10
1
0.001
0.01
0.1
1
10
OUTPUT SINK CURRENT (mA)
1.4
670323 G12
Supply Current
vs Output Sink Current
TA = –40°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
1
0.001
0
670323 G11
SUPPLY CURRENT (μA)
100
20
4
1.4 3.4 5.4 7.4 9.4 11.4 13.4 15.4 17.4
SUPPLY VOLTAGE (V)
Supply Current
vs Output Sink Current
18
30
5
1.9
16
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
40
SUPPLY CURRENT (μA)
–4
8 10 12 14
6
SUPPLY VOLTAGE (V)
Start-Up Supply Current
50
SUPPLY CURRENT (μA)
–3
SUPPLY CURRENT (μA)
–2
4
670323 G09
9 NO LOAD CURRENT
–1
1000
2
Quiescent Supply Current
vs Supply Voltage
0
SUPPLY CURRENT (μA)
7
4
1
TA = 125°C
TA = –55°C
8
7
Minimum Supply Voltage
TA = 25°C
TA = 85°C
9
HYSTERESIS (mV)
8
6
THRESHOLD SHIFT (mV)
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
9
HYSTERESIS (mV)
HYSTERESIS (mV)
FOUR TYPICAL PARTS
9 VS = 5V
#1
#2
8
#3
#4
7
Hysteresis vs Supply Voltage
10
100
670323 G14
100
TA = 85°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
10
1
0.001
0.01
0.1
1
10
OUTPUT SINK CURRENT (mA)
100
670323 G15
670323fd
8
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
TYPICAL PERFORMANCE CHARACTERISTICS
Below Ground Input Bias Current
Low Level Input Bias Current
VS = 18V
–0.3V < VIN < 0V
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
CURRENT IS POSITIVE GOING
2 INTO THE DEVICE
10
1
0
–1
–2
–3
VS = 18V
0V < VIN < 1V
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
–4
–5
–6
CURRENT IS GOING OUT OF THE DEVICE
–0.1
–0.2
INPUT VOLTAGE (V)
–7
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
INPUT VOLTAGE (V)
670323 G16
0.1
1
10
0.01
OUTPUT SINK CURRENT (mA)
100
0.01
0.1
1
10
OUTPUT SINK CURRENT (mA)
670323 G19
70
70
SHORT-CIRCUIT CURRENT (mA)
SHORT-CIRCUIT CURRENT (mA)
80
50
40
30
VS = 5V
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
2
4
8 10 12 14
6
OUTPUT VOLTAGE (V)
100
10
0.001
100
16
Output Leakage Current
60
50
TA = 25°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
40
30
20
1
0.1
VS = 5V
TA = 25°C
TA = 85°C
TA = 125°C
TA = –55°C
0.01
0.001
0
670323 G22
100
10
10
18
0.01
0.1
1
10
OUTPUT SINK CURRENT (mA)
670323 G21
Output Short-Circuit Current
80
0
TA = 85°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
670323 G20
Output Short-Circuit Current
17
1000
TA = 25°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
10
0.001
100
60
15
670323 G18
OUTPUT SATURATION VOLTAGE (mV)
OUTPUT SATURATION VOLTAGE (mV)
OUTPUT SATURATION VOLTAGE (mV)
100
0
VS = 18V
0.01 VIN > 1V
TA = 25°C
TA = 85°C
TA = 125°C
0.001
1
3
5
7
9 11 13
INPUT VOLTAGE (V)
Output Saturation Voltage
vs Output Sink Current
1000
TA = –40°C
VS = 1.4V
VS = 5V
VS = 12V
VS = 18V
10
0.1
Output Saturation Voltage
vs Output Sink Current
1000
20
1
1
670323 G17
Output Saturation Voltage
vs Output Sink Current
10
0.001
CURRENT IS GOING INTO THE DEVICE
INPUT BIAS CURRENT (nA)
100
1
–0.3
10
OUTPUT LEAKAGE CURRENT (nA)
1000
High Level Input Bias Current
3
INPUT BIAS CURRENT (nA)
INPUT BIAS CURRENT (nA)
10000
0
2
4
8 10 12 14
6
OUTPUT VOLTAGE (V)
16
18
670323 G23
0
2
4
6
8 10 12 14
OUTPUT VOLTAGE (V)
16
18
670323 G24
670323fd
9
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
TYPICAL PERFORMANCE CHARACTERISTICS
Propagation Delay
vs Input Overdrive
50
PROPAGATION DELAY (μs)
100
LH NONINV
HL NONINV
LH INV
HL INV
TA = 25°C
RISE AND FALL TIME (μs)
60
Rise and Fall Times
vs Output Pull-Up Resistor
40
30
20
Noninverting and Inverting
Comparator Propagation Delay
VS = 5V
CL = 20pF
TA = 25°C
VO(NINV)
5V/DIV
DC
10
VO(INV)
5V/DIV
DC
RISE
FALL
1
VIN
10mV/DIV
AC
0.1
10
0
20
0
60
80
40
INPUT OVERDRIVE (mV)
0.01
0.1
100
1
10
100
OUTPUT PULL-UP RESISTOR (kΩ)
1000
670323 G27
20μs/DIV
VS = 5V
TA = 25°C
RLOAD = 10k CONNECTED TO VS
VIN(OVERDRIVE) = 10mV OVER THE INPUT
VOLTAGE THRESHOLDS
670323 G26
670323 G25
APPLICATIONS INFORMATION
The LT6703-2/LT6703-3/LT6703HV-2/LT6703HV-3 devices
are micropower comparators with a built-in 400mV reference. Features include wide supply voltage range (1.4V to
18V), Over-The-Top input and output range, 2% accurate
rising input threshold voltage and 6.5mV typical built-in
hysteresis.
R3
VS
R4
+IN
LT6703-3
R2
VOUT
OUT
GND
670323 F01
THRESHOLD EQUATIONS:
VIN (L TO H) = (400mV) • (R1) •
VIN (H TO L) = (393mV) • (R1) •
1
+
R1
1
R1
1
+
R2
+
1
R2
1
R3
+
1
R3 + R4
–
VS • R1
R3 + R4
Each comparator has one input available externally. The two
versions of the part differ by the polarity of the available
input (i.e., inverting or noninverting). The other comparator
input is connected internally to the 400mV reference. The
rising input threshold voltage of the comparator is designed
to be equal to that of the reference (i.e., ≈400mV). The
reference voltage is established with respect to the device
GND connection.
Hysteresis
R1
VIN
Internal Reference
Each comparator has built-in 6.5mV (typical) of hysteresis
to simplify designs, to insure stable operation in the presence of noise at the inputs, and to reject supply rail noise
that might be induced by state change load transients. The
hysteresis is designed such that the falling input threshold
voltage is nominally 393.5mV. External positive feedback
circuitry can be employed to increase effective hysteresis
if desired, but such circuitry will provide an apparent effect
on both the rising and falling input thresholds (the actual
internal thresholds remain unaffected).
Figure 1. Additional Hysteresis Circuit
670323fd
10
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
APPLICATIONS INFORMATION
Comparator Input
Power Supplies
The comparator input can range from ground to 18V (36V
for LT6703HV), regardless of the supply voltage used. The
typical input current for inputs well above the threshold
(i.e., >800mV) is a few pA leaking into the input. With
decreasing input voltage, a small bias current begins
to be drawn out of the input, reaching a few nA when at
ground potential. The input may be forced 100mV below
ground without causing an improper output, though some
additional bias current will begin to flow from the ESD
input protection diode. Inputs driven further negative than
100mV below ground will not cause damage provided the
current is limited to 10mA.
The comparator circuitry operates from a single 1.4V
to 18V supply. A minimum 0.1μF bypass capacitor is
required between the VS pin and GND. When an output
load is connected to the supply rail near the part and the
output is sinking more than 5mA, a 1μF bypass capacitor is
recommended. In instances where the supply is relatively
“soft” (such as with small batteries) and susceptible to
load steps, an additional 47Ω series decoupling resistor
can further improve isolation of supply transients from
the VS pin.
Comparator Output
The comparator output is open collector and capable of
sinking 40mA typical. Load currents are directed out of
the GND pin of the part. The output off-state voltage may
range between – 0.3V and 18V (36V for LT6703HV) with
respect to ground, regardless of the supply voltage used.
When the output high state bias voltage is above 18V, a
100k minimum pull-up resistor is required and no total load
capacitor greater than 100nF should be used. If the output
high state is above 18V, caution has to be taken to prevent
a short from the output directly to the bias voltage, even
if the output is in the off state. As with any open-collector
device, the outputs of multiple comparators may be tied
together to implement wire-AND logic functions.
670323fd
11
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
PACKAGE DESCRIPTION
DC Package
3-Lead Plastic DFN (2mm × 2mm)
(Reference LTC DWG # 05-08-1717 Rev A)
1.35 p0.05
(2 SIDES)
1.00 p0.05
1.30 p0.05 (2 SIDES)
2.00 p0.05
PACKAGE
OUTLINE
0.25 p 0.05
0.50 BSC
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.35 p 0.05
(2 SIDES)
R = 0.05
TYP
2.00 p0.10
(4 SIDES)
PIN 1 BAR
TOP MARK
(SEE NOTE 6)
1.00 p 0.05
(2 SIDES)
0.40 p0.10
0.200 REF
0.75 p0.05
0.70 p0.05
PIN 1 NOTCH
R = 0.20 OR
0.25 s 45o
CHAMFER
3
1
R = 0.125 TYP
0.25 p 0.05
0.50 BSC
BOTTOM VIEW—EXPOSED PAD
(DC3) DFN 0309 REV A
0.00 – 0.05
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (W-TBD)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
670323fd
12
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635 Rev B)
0.62
MAX
0.95
REF
2.90 BSC
(NOTE 4)
1.22 REF
1.4 MIN
3.85 MAX 2.62 REF
2.80 BSC
1.50 – 1.75
(NOTE 4)
PIN ONE
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
0.01 – 0.10
1.00 MAX
DATUM ‘A’
0.30 – 0.50 REF
0.09 – 0.20
(NOTE 3)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
1.90 BSC
S5 TSOT-23 0302 REV B
670323fd
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
13
LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
TYPICAL APPLICATIONS
1.8V
VS
0V
ILOAD
VOUT
OUT
+IN
5V
LOAD
VS
LED
(ON IF ILOAD > 4A)
10k
LT6703-3
15V
12V
1.8V
1k
LT6703-2
0V
–IN
GND
RS
0.1Ω
OUT
GND
1.8V
Level Translator
High Voltage to Low Voltage
15V
Low Side Current Sense Alarm
VS
10k
LT6703-3
1.8V
+IN
0V
OUT
VOUT
15V
0V
GND
Level Translator
Low Voltage to High Voltage
670323 TA02
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1017/LT1018
Micropower Dual Comparator
1.1V (Min) Supply Voltage, ±1.4mV (Max) Input Offset
LTC1441/LTC1442
Micropower Dual Comparator with 1% Reference
1.182 ±1% Reference, ±10mV (Max) Input Offset
LTC1998
Micropower Comparator for Battery Monitoring
2.5μA Typ Supply Current, Adjustable Threshold and Hysteresis
LT6700
Dual Micropower Comparator with 400mV Reference
1.4V to 18V Supply Voltage, 6.5μA Typical Supply Current
670323fd
14 Linear Technology Corporation
LT 0609 REV D • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
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