LT6700HS6-1-TRPBF [Linear]
Micropower, Low Voltage, Dual Comparator with 400mV Reference; 微功耗，低电压，双通道比较具有400mV基准
| 型号： | LT6700HS6-1-TRPBF |
| 厂家： | 
Linear |
| 描述： | Micropower, Low Voltage, Dual Comparator with 400mV Reference |
| 文件： | 总20页 (文件大小：210K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
Micropower, Low Voltage,
Dual Comparator with
400mV Reference
DESCRIPTION
FEATURES
The LT®6700-1/LT6700-2/LT6700-3/LT6700HV-1/
LT6700HV-2/LT6700HV-3 combine two micropower, low
voltage comparators with a 400mV reference in a 6-lead
SOT-23ortinyDFNpackage. Operatingwithsuppliesfrom
1.4V up to 18V, these devices draw only 6.5μA, making
them ideal for low voltage system monitoring. Hysteresis
isincludedinthecomparators,easingdesignrequirements
to insure stable output operation.
n
Internal 400mV Reference
n
Total Threshold Error: ±±1.25 Maꢀ at .2ꢁ°
n
Inputs and Outputs Operate to 36V
n
Wide Supply Range: ±14V to ±8V
n
Specified for –22ꢁ° to ±.2ꢁ° Temperature Range
n
Low Quiescent Current: 6.5μA Typ at 5V
n
Internal Hysteresis: 6.5mV Typ
n
Low Input Bias Current: 10nA ꢀax
Over-The-Top® Input also Includes Ground
n
The comparators each have one input available externally;
the other inputs are connected internally to the reference.
The comparator outputs are open collector and the output
load can be referred to any voltage up to 18V (36V for
LT6700HV), independent of supply voltage. The output
stage sinking capability is guaranteed to be greater than
5mA over temperature.
n
Open-Collector Outputs Allow Level Translation
n
Choice of Input Polarities: LT6700-1/LT6700-2/
LT6700-3/LT6700HV-1/LT6700HV-2/LT6700HV-3
n
Available in Low Profile (1mm) SOT-23 (ThinSOT™)
and 2mm × 3mm DFN Packages
APPLICATIONS
The three versions of this part differ by the polar-
ity of the available comparator inputs. The LT6700-1/
LT6700HV-1 has one inverting input and one noninvert-
ing input, making it suitable for use as a window com-
parator. The LT6700-2/LT6700HV-2 has two inverting
inputs and the LT6700-3/LT6700HV-3 has two nonin-
verting inputs. All versions are offered in commercial,
industrial and automotive temperature ranges.
n
Battery-Powered System ꢀonitoring
n
Threshold Detectors
n
Window Comparators
Relay Driving
Industrial Control Systems
Handheld Instruments
n
n
n
n
Automotive ꢀonitor and Controls
L, LT, LTC and LTꢀ are registered trademarks of Linear Technology Corporation. Over-The-Top
is a registered trademark of Linear Technology Corporation. ThinSOT is a trademark of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Micropower Battery Monitor
°omparator Thresholds
V
BATT
vs Temperature
1.4V (ꢀIN)
3V (NOꢀ)
406
LT6700-3
1ꢀ
1ꢀ
1ꢀ
#1A
#1B
#2A
#2B
404
402
400
398
396
394
392
390
COꢀP B
+
RISING INPUT
0.1μF
V
BATT
> 1.6V
–
63.4k
+
+
ALKALINE
AA CELLS
V
S
V
= 400mV
REFERENCE
R
FALLING INPUT
COꢀP A
TWO TYPICAL PARTS
COꢀP A AND B
–
+
V
= 5V
V
BATT
> 2V
S
–60 –40 –20
0
20 40 60 80 100 120
ꢀONITOR CONSUꢀES ~10μA
HYSTERESIS IS APPROXIꢀATELY
2% OF TRIP VOLTAGE
TEꢀPERATURE (°C)
261k
6700123 TA02
6700123 TA01
6700123ff
1
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
(Note ±)
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V to GND) ..........................18.5V
Specified Temperature Range (Note 5)
S
Input Voltage (+IN, –IN)
LT6700CS6/LT6700HVCS6/
LT6700 (Note 3).......................... 18.5V to (GND – 0.3V)
LT6700HV (Note 3) ........................ 40V to (GND – 0.3V)
LT6700 Output Voltage (OUT)..... 18.5V to (GND – 0.3V)
LT6700HV Output Voltage (OUT) ... 40V to (GND – 0.3V)
Output Short-Circuit Duration (Note 2) ............ Indefinite
Input Current (Note 3)..........................................–10mA
Operating Temperature Range (Note 4)
LT6700CDCB-1/-2/-3 .............................. 0°C to 70°C
LT6700IS6/LT6700HVIS6/
LT6700IDCB-1/-2/-3 ............................ –40°C to 85°C
LT6700HS6/LT6700HVHS6/
LT6700HDCB-1/-2/-3 ....................... –40°C to 125°C
LT6700ꢀPDCB-1/-2/-3 .................... –55°C to 125°C
ꢀaximum Junction Temperature
S6 Package....................................................... 150°C
DCB6 Package .................................................. 150°C
Storage Temperature Range
LT6700CS6/LT6700HVCS6/
LT6700CDCB-1/-2/-3 ...........................–40°C to 85°C
LT6700IS6/LT6700HVIS6/
LT6700IDCB-1/-2/-3 ............................ –40°C to 85°C
LT6700HS6/LT6700HVHS6/
LT6700HDCB-1/-2/-3 ........................ –40°C to 125°C
S6 Package........................................ –65°C to 150°C
DCB6 Package ................................... –65°C to 150°C
Lead Temperature, TSOT-23 (Soldering, 10 sec)... 300°C
PIN CONFIGURATION
LT6700-±
LT6700-.
LT6700-3
LT6700HV-±
LT6700HV-.
LT6700HV-3
TOP VIEW
TOP VIEW
TOP VIEW
OUTA 1
6 OUTB
5 V
OUTA 1
6 OUTB
5 V
OUTA 1
GND 2
+INA 3
6 OUTB
5 V
GND 2
+INA 3
GND 2
–INA 3
S
S
S
4 –INB
4 –INB
4 +INB
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
= 150°C, θ = 230°C/W
T
JꢀAX
= 150°C, θ = 230°C/W
T
= 150°C, θ = 230°C/W
JꢀAX
JA
JA
JꢀAX
JA
LT6700-±
LT6700-.
LT6700-3
TOP VIEW
TOP VIEW
TOP VIEW
6
6
6
1
1
1
OUTA
+ INA
GND
–INB
OUTA
OUTB
– INA
GND
–INB
OUTA
OUTB
+ INA
GND
+INB
7
7
7
5
5
5
2
3
2
3
2
3
OUTB
4
4
4
V
V
V
S
S
S
DCB6 PACKAGE
6-LEAD (2mm × 3mm) PLASTIC DFN
DCB6 PACKAGE
6-LEAD (2mm × 3mm) PLASTIC DFN
DCB6 PACKAGE
6-LEAD (2mm × 3mm) PLASTIC DFN
T
= 125°C, θ = 64°C/W
T
= 125°C, θ = 64°C/W
T
= 125°C, θ = 64°C/W
JꢀAX
JA
JꢀAX
JA
JꢀAX JA
SOLDERED EXPOSED PAD (PIN 7)
INTERNALLY CONNECTED TO GND
(PCB CONNECTION OPTIONAL)
SOLDERED EXPOSED PAD (PIN 7)
INTERNALLY CONNECTED TO GND
(PCB CONNECTION OPTIONAL)
SOLDERED EXPOSED PAD (PIN 7)
INTERNALLY CONNECTED TO GND
(PCB CONNECTION OPTIONAL)
6700123ff
2
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
LT6700CS6-1#TRꢀPBF
LT6700HVCS6-1#TRꢀPBF
LT6700IS6-1#TRꢀPBF
LT6700HVIS6-1#TRꢀPBF
LT6700HS6-1#TRꢀPBF
LT6700HVHS6-1#TRꢀPBF
LT6700CS6-2#TRꢀPBF
LT6700HVCS6-2#TRꢀPBF
LT6700IS6-2#TRꢀPBF
LT6700HVIS6-2#TRꢀPBF
LT6700HS6-2#TRꢀPBF
LT6700HVHS6-2#TRꢀPBF
LT6700CS6-3#TRꢀPBF
LT6700HVCS6-3#TRꢀPBF
LT6700IS6-3#TRꢀPBF
LT6700HVIS6-3#TRꢀPBF
LT6700HS6-3#TRꢀPBF
LT6700HVHS6-3#TRꢀPBF
LT6700CDCB-1#TRꢀPBF
LT6700IDCB-1#TRꢀPBF
LT6700HDCB-1#TRꢀPBF
TAPE AND REEL
PART MARKING* PA°KAGE DES°RIPTION
SPE°IFIED TEMPERATURE RANGE
0°C to 70°C
0°C to70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
LT6700CS6-1#TRPBF
LT6700HVCS6-1#TRPBF
LT6700IS6-1#TRPBF
LT6700HVIS6-1#TRPBF
LT6700HS6-1#TRPBF
LT6700HVHS6-1#TRPBF
LT6700CS6-2#TRPBF
LT6700HVCS6-2#TRPBF
LT6700IS6-2#TRPBF
LT6700HVIS6-2#TRPBF
LT6700HS6-2#TRPBF
LT6700HVHS6-2#TRPBF
LT6700CS6-3#TRPBF
LT6700HVCS6-3#TRPBF
LT6700IS6-3#TRPBF
LT6700HVIS6-3#TRPBF
LT6700HS6-3#TRPBF
LT6700HVHS6-3#TRPBF
LT6700CDCB-1#TRPBF
LT6700IDCB-1#TRPBF
LT6700HDCB-1#TRPBF
LTK7
6-Lead Plastic TSOT-23
LTK7
6-Lead Plastic TSOT-23
LTK7
6-Lead Plastic TSOT-23
LTK7
6-Lead Plastic TSOT-23
LTK7
6-Lead Plastic TSOT-23
LTK7
6-Lead Plastic TSOT-23
LTADL
LTADL
LTADL
LTADL
LTADL
LTADL
LTADꢀ
LTADꢀ
LTADꢀ
LTADꢀ
LTADꢀ
LTADꢀ
LBXW
LBXW
LBXW
LDVS
LBXX
LBXX
LBXX
LDVT
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
6-Lead (2mm × 3mm) Plastic DFN
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
LT6700ꢀPDCB-1#TRꢀPBF LT6700ꢀPDCB-1#TR
LT6700CDCB-2#TRꢀPBF
LT6700IDCB-2#TRꢀPBF
LT6700HDCB-2#TRꢀPBF
LT6700CDCB-2#TRPBF
LT6700IDCB-2#TRPBF
LT6700HDCB-2#TRPBF
LT6700ꢀPDCB-2#TRꢀPBF LT6700ꢀPDCB-2#TR
LT6700CDCB-3#TRꢀPBF
LT6700IDCB-3#TRꢀPBF
LT6700HDCB-3#TRꢀPBF
LT6700CDCB-3#TRPBF
LT6700IDCB-3#TRPBF
LT6700HDCB-3#TRPBF
LBXY
LBXY
LBXY
LDVV
LT6700ꢀPDCB-3#TRꢀPBF LT6700ꢀPDCB-3#TR
TRꢀ = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC ꢀarketing for parts specified with wider operating temperature ranges.
Consult LTC ꢀarketing 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/
6700123ff
3
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ELECTRICAL CHARACTERISTICS TA = .2ꢁ°, (LT6700-±/LT6700-./LT6700-3) unless otherwise specified1
SYMBOL
PARAMETER
°ONDITIONS
MIN
TYP
MAX
UNITS
V
TH(R)
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L
O
V = 1.4V
394
395
393
392
400
400
400
400
406
405
407
408
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
386
387
385
384
393.5
393.5
393.5
393.5
401
400
402
403
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
3.5
6.5
9.5
mV
TH(R)
TH(F)
S
L
O
I
B
Input Bias Current
V = 1.4V, 18V, V = V
S
0.01
0.01
4
10
10
10
nA
nA
nA
S
IN
V = 1.4V, V = 18V
S
IN
V = 1.4V, 18V, V = 0.1V
S
IN
V
Output Low Voltage
10mV Input Overdrive
OL
V = 1.4V, I
= 0.5mA
= 3mA
55
60
70
200
200
200
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
S
OUT
I
t
t
t
t
I
Output Leakage Current
High-to-Low Propagation Delay
Low-to-High Propagation Delay
Output Rise Time
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
0.01
0.01
0.8
0.8
μA
μA
OFF
S
OUT
S
IN
V = 1.4V, V
= 18V, V = 40mV Overdrive
IN
S
OUT
V = 5V, 10mV Input Overdrive, R = 10k,
18
μs
μs
μs
μs
PD(HL)
S
OL
L
V
= 400mV
V = 5V, 10mV Input Overdrive, R = 10k,
29
PD(LH)
S
OH
L
V
= 0.9 • V
S
V = 5V, 10mV Input Overdrive, R = 10k
2.2
0.22
r
S
L
V = (0.1 to 0.9) • V
O
S
Output Fall Time
V = 5V, 10mV Input Overdrive, R = 10k
S L
f
V = (0.1 to 0.9) • V
O
S
Supply Current
No Load Current
S
V = 1.4V
5.7
6.5
6.9
7.1
10.0
11.0
12.5
13.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
The l denotes the specifications which apply over the temperature range of 0ꢁ° ≤ TA ≤ 70ꢁ°, (LT6700°-±/LT6700°-./LT6700°-3) unless
otherwise specified (Notes 4, 2)1
SYMBOL
PARAMETER
°ONDITIONS
MIN
TYP
MAX
UNITS
V
TH(R)
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L
O
V = 1.4V
●
●
●
●
391.0
392.5
390.0
389.0
409.0
407.5
410.0
411.0
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
383.5
384.5
382.5
381.5
403.5
402.5
404.5
405.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
6700123ff
4
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of 0ꢁ° ≤ TA ≤ 70ꢁ°, (LT6700°-±/LT6700°-./LT6700°-3) unless
otherwise specified (Notes 4, 2)1
SYMBOL
PARAMETER
HYS = V
°ONDITIONS
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
MIN
TYP
MAX
UNITS
HYS
– V
●
3
11
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
15
15
15
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V
S
IN
V = 1.4V, 18V, V = 0.1V
S
IN
V
OL
Output Low Voltage
10mV Input Overdrive
V = 1.4V, I
= 0.5mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
S
OUT
I
I
Output Leakage Current
Supply Current
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
S
OUT
S
IN
V = 1.4V, V
= 18V, V = 40mV Overdrive
IN
S
OUT
No Load Current
V = 1.4V
●
●
●
●
13.0
14.0
15.5
16.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
The l denotes the specifications which apply over the temperature range of –40ꢁ° ≤ TA ≤ 82ꢁ°, (LT6700I-±/LT6700I-./LT6700I-3)
unless otherwise specified (Notes 4, 2)1
SYMBOL
PARAMETER
°ONDITIONS
MIN
TYP
MAX
UNITS
V
TH(R)
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L
O
V = 1.4V
●
●
●
●
390
392
389
388
410
408
411
412
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
382.5
383.5
381.5
380.5
404.5
403.5
405.5
406.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
●
2
11.5
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
15
15
15
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V
S
IN
V = 1.4V, 18V, V = 0.1V
S
IN
V
OL
Output Low Voltage
10mV Input Overdrive
V = 1.4V, I
= 0.1mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
S
OUT
I
I
Output Leakage Current
Supply Current
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
OUT
S
IN
V = 1.4V, V
= 18V, V = 40mV Overdrive
IN
S
OUT
No Load Current
V = 1.4V
S
●
●
●
●
14.0
15.0
16.5
17.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
6700123ff
5
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of –40ꢁ° ≤ TA ≤ ±.2ꢁ°, (LT6700H-±/LT6700H-./LT6700H-3)
unless otherwise specified (Notes 4, 2)1
LT6700H
TYP
SYMBOL
PARAMETER
°ONDITIONS
MIN
MAX
UNITS
V
TH(R)
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L
O
V = 1.4V
●
●
●
●
390
392
389
388
411
410
412
413
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
381.5
382.5
380.5
379.5
405.5
404.5
406.5
407.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
●
2
13.5
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
45
45
50
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V
S
IN
V = 1.4V, 18V, V = 100mV
S
IN
V
Output Low Voltage
10mV Input Overdrive
OL
V = 1.4V, I
= 0.1mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
S
OUT
I
I
Output Leakage Current
Supply Current
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
S
OUT
S
IN
V = 1.4V, V
= 18V, V = 40mV Overdrive
IN
S
OUT
No Load Current
V = 1.4V
●
●
●
●
16.0
17.0
18.5
19.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
The l denotes the specifications which apply over the temperature range of –22ꢁ° ≤ TA ≤ ±.2ꢁ°, (LT6700MP-±/LT6700MP-./LT6700MP-3)
unless otherwise specified (Notes 4, 2)1
LT6700H
TYP
SYMBOL
PARAMETER
°ONDITIONS
MIN
MAX
UNITS
V
TH(R)
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L
O
V = 1.4V
●
●
●
●
390
392
389
388
411
410
412
413
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
381.5
382.5
380.5
379.5
405.5
404.5
406.5
407.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
●
2
13.5
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
45
45
50
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V
S
IN
V = 1.4V, 18V, V = 100mV
S
IN
V
Output Low Voltage
10mV Input Overdrive
OL
V = 1.4V, I
= 0.1mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
S
OUT
6700123ff
6
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of –22ꢁ° ≤ TA ≤ ±.2ꢁ°, (LT6700MP-±/LT6700MP-./LT6700MP-3)
unless otherwise specified (Notes 4, 2)1
LT6700H
TYP
SYMBOL
PARAMETER
°ONDITIONS
V = 1.4V, 18V, V
MIN
MAX
UNITS
I
Output Leakage Current
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
OUT
S
IN
V = 18V, V
= 18V, V = 40mV Overdrive
IN
S
OUT
I
S
Supply Current
No Load Current
V = 1.4V
●
●
●
●
16.0
17.0
18.5
19.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
TA = .2ꢁ°, (LT6700HV-±/LT6700HV-./LT6700HV-3) unless otherwise specified1
SYMBOL PARAMETER °ONDITIONS
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
MIN
TYP
MAX
UNITS
V
TH(R)
L
O
V = 1.4V
394
395
393
392
400
400
400
400
406
405
407
408
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
386
387
385
384
393.5
393.5
393.5
393.5
401
400
402
403
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
3.5
6.5
9.5
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
0.01
0.01
4
10
10
10
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V, 36V
S
IN
V = 1.4V, 18V, V = 0.1V
S
IN
V
OL
Output Low Voltage
10mV Input Overdrive
V = 1.4V, I
= 0.5mA
= 3mA
55
60
70
200
200
200
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
OUT
S
I
t
t
t
t
I
Output Leakage Current
High-to-Low Propagation Delay
Low-to-High Propagation Delay
Output Rise Time
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
0.01
0.01
0.8
0.8
μA
μA
OFF
S
OUT
S
IN
V = 18V, V
= 18V, (36V, R = 100k), V = 40mV Overdrive
L IN
S
OUT
V = 5V, 10mV Input Overdrive, R = 10k,
18
μs
μs
μs
μs
PD(HL)
S
OL
L
V
= 400mV
V = 5V, 10mV Input Overdrive, R = 10k,
29
PD(LH)
S
OH
L
V
= 0.9 • V
S
V = 5V, 10mV Input Overdrive, R = 10k
2.2
0.22
r
S
L
V = (0.1 to 0.9) • V
O
S
Output Fall Time
V = 5V, 10mV Input Overdrive, R = 10k
S L
f
V = (0.1 to 0.9) • V
O
S
Supply Current
No Load Current
S
V = 1.4V
5.7
6.5
6.9
7.1
10.0
11.0
12.5
13.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
6700123ff
7
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of 0ꢁ° ≤ TA ≤ 70ꢁ°, (LT6700HV°-±/LT6700HV°-./LT6700HV°-3)
unless otherwise specified (Notes 4, 2)1
SYMBOL PARAMETER
°ONDITIONS
R = 100k, V = 2V Swing
MIN
TYP MAX UNITS
V
TH(R)
Rising Input Threshold Voltage
(Note 6)
L
O
V = 1.4V
●
●
●
●
391.0
392.5
390.0
389.0
409.0
407.5
410.0
411.0
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage
(Note 6)
R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
383.5
384.5
382.5
381.5
403.5
402.5
404.5
405.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
●
3
11
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
15
15
15
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V, 36V
S
IN
V = 1.4V, 18V, V = 0.1V
S
IN
V
OL
Output Low Voltage
10mV Input Overdrive
V = 1.4V, I
= 0.5mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
OUT
S
I
I
Output Leakage Current
Supply Current
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
OUT
S
IN
V = 18V, V
= 18V, (36V, R = 100k), V = 40mV Overdrive
L IN
S
OUT
No Load Current
V = 1.4V
S
●
●
●
●
13.0
14.0
15.5
16.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
The l denotes the specifications which apply over the temperature range of –40ꢁ° ≤ TA ≤ 82ꢁ°, (LT6700HVI-±/LT6700HVI-./LT6700HVI-3)
unless otherwise specified (Notes 4, 2)1
SYMBOL PARAMETER
°ONDITIONS
MIN TYP MAX UNITS
V
TH(R)
Rising Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L
O
V = 1.4V
●
●
●
●
390
392
389
388
410
408
411
412
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage (Note 6) R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
382.5
383.5
381.5
380.5
404.5
403.5
405.5
406.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
●
2
11.5
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
15
15
15
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V, 36V
S
IN
V = 1.4V, 18V, V = 0.1V
S
IN
V
OL
Output Low Voltage
10mV Input Overdrive
V = 1.4V, I
= 0.1mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
S
OUT
I
Output Leakage Current
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
OUT
S
IN
V = 18V, V
= 18V, (36V, R = 100k), V = 40mV Overdrive
L IN
S
OUT
6700123ff
8
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of –40ꢁ° ≤ TA ≤ 82ꢁ°, (LT6700HVI-±/LT6700HVI-./LT6700HVI-3)
unless otherwise specified (Notes 4, 2)1
SYMBOL PARAMETER
Supply Current
°ONDITIONS
MIN TYP MAX UNITS
I
No Load Current
S
V = 1.4V
●
●
●
●
14.0
15.0
16.5
17.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
The l denotes the specifications which apply over the temperature range of –40ꢁ° ≤ TA ≤ ±.2ꢁ°, (LT6700HVH-±/LT6700HVH-./
LT6700HVH-3) unless otherwise specified (Notes 4, 2)1
LT6700H
TYP
SYMBOL PARAMETER
°ONDITIONS
R = 100k, V = 2V Swing
MIN
MAX UNITS
V
TH(R)
Rising Input Threshold Voltage
(Note 6)
L
O
V = 1.4V
●
●
●
●
390
392
389
388
411
410
412
413
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
V
TH(F)
Falling Input Threshold Voltage
(Note 6)
R = 100k, V = 2V Swing
L O
V = 1.4V
●
●
●
●
381.5
382.5
380.5
379.5
405.5
404.5
406.5
407.5
mV
mV
mV
mV
S
V = 5V
S
V = 12V
S
V = 18V
S
HYS
HYS = V
– V
V = 1.4V, 5V, 12V, 18V, R = 100k, V = 2V Swing
●
2
13.5
mV
TH(R)
TH(F)
S
L
O
I
Input Bias Current
V = 1.4V, 18V, V = V
S
●
●
●
45
45
50
nA
nA
nA
B
S
IN
V = 1.4V, V = 18V, 36V
S
IN
V = 1.4V, 18V, V = 100mV
S
IN
V
OL
Output Low Voltage
10mV Input Overdrive
V = 1.4V, I
= 0.1mA
= 3mA
●
●
●
250
250
250
mV
mV
mV
S
S
OUT
OUT
V = 1.6V, I
V = 5V, I
= 5mA
OUT
S
I
I
Output Leakage Current
Supply Current
V = 1.4V, 18V, V
= V , V = 40mV Overdrive
●
●
1
1
μA
μA
OFF
S
S
OUT
S
IN
V = 18V, V
= 18V, (36V, R = 100k), V = 40mV Overdrive
L IN
S
OUT
No Load Current
V = 1.4V
●
●
●
●
16.0
17.0
18.5
19.0
μA
μA
μA
μA
S
V = 5V
S
V = 12V
S
V = 18V
S
Note ±: Stresses beyond those listed under Absolute ꢀaximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
ꢀaximum Rating condition for extended periods may affect device
reliability and lifetime.
Note .: 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. If the input
voltage exceeds –0.3V below ground, the input current should be limited
to less than 10mA.
temperature range of –40°C to 125°C. The LT6700ꢀP-1/-2/-3 is
guaranteed functional over the operating temperature range of –55°C to
125°C.
Note 2: The LT6700C-1/-2/-3/LT6700HVC-1/-2/-3 is guaranteed to
meet the specified performance from 0°C to 70°C. The LT6700C-1/-2/-
3/LT6700HVC-1/-2/-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 LT6700I-1/-2/-3/LT6700HVI-1/-2/-3
is guaranteed to meet specified performance from –40°C to 85°C. The
LT6700H-1/-2/-3/LT6700HVH-1/-2/-3 is guaranteed to meet specified
performance from –40°C to 125°C.The LT6700ꢀP-1/-2/-3 is guaranteed to
meet specified performance from –55°C to 125°C.
Note 4: The LT6700C-1/-2/-3/LT6700HVC-1/-2/-3, and
LT6700I-1/-2/-3/LT6700HVI-1/-2/-3 are guaranteed functional over the
operating temperature range of –40°C to 85°C. The LT6700H-1/-2/-3/
LT6700HVH-1/-2/-3 is guaranteed functional over the operating
Note 6: V defines the threshold voltage of the comparators and
TH
combines the effect of offset and reference accuracy.
6700123ff
9
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
PIN FUNCTIONS
V
S
V
S
V
S
LT6700-2
LT6700HV-2
LT6700-3
LT6700HV-3
LT6700-1
LT6700HV-1
COꢀP B
COꢀP B
COꢀP B
–INB
–
+
+INB
+
–
–INB
–
+
OUTB
OUTB
OUTB
V
S
V
S
V
S
400mV
REFERENCE
400mV
REFERENCE
400mV
REFERENCE
COꢀP A
COꢀP A
COꢀP A
–
+
–
OUTA
OUTA
OUTA
+
+INA
+
+INA
–INA
–
6700123 PF01
6700123 PF03
6700123 PF02
GND
GND
GND
OUTA: Open-Collector Output of Comparator Section A.
Thispinprovidesdriveforupto40mAofloadcurrent. Off-
state voltage may be as high as 18V (36V for LT6700HV)
INB: External Input for Comparator Section B. The volt-
age on this pin can range from –0.3V to 18V (36V for
LT6700HV) with respect to GND regardless of V used.
S
above GND, regardless of V used.
The input is noninverting for the LT6700-3/LT6700HV-3,
andinvertingfortheLT6700-1/LT6700HV-1andLT6700-2/
LT6700HV-2. The other section B comparator input is
internally connected to the 400mV reference.
S
GND: Ground. This pin is also the low side return of the
internal 400mV reference.
INA: External Input for Comparator Section A. The volt-
V : Comparator Core Supply Voltage. The parts are char-
S
age on this pin can range from –0.3V to 18V (36V for
acterized for operation with 1.4V ≤ V ≤ 18V with respect
S
LT6700HV) with respect to GND regardless of V used.
S
to GND.
The input is noninverting for the LT6700-1/LT6700HV-1
andLT6700-3/LT6700HV-3,andinvertingfortheLT6700-2/
LT6700HV-2. The other section A comparator input is
internally connected to the 400mV reference.
OUTB : Open-Collector Output of Comparator Section B.
Thispinprovidesdriveforupto40mAofloadcurrent. Off-
state voltage may be as high as 18V (36V for LT6700HV)
above GND, regardless of V used.
S
6700123ff
10
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
TYPICAL PERFORMANCE CHARACTERISTICS
Distribution of Rising Input
Threshold Voltage
Distribution of Falling Input
Threshold Voltage
Distribution of Hysteresis
20
18
16
14
12
10
8
18
16
14
12
10
8
18
16
14
12
10
8
V
T
= 5V
= 25°C
V
T
= 5V
= 25°C
V
T
= 5V
= 25°C
S
S
S
A
A
A
6
6
6
4
4
4
2
2
2
0
0
0
4
4.8
5.6
6.4
7.2
8
8.8
394
396
398
400
402
404
406
388
390
392
394
396
398
400
HYSTERESIS (mV)
RISING INPUT THRESHOLD VOLTAGE (mV)
FALLING INPUT THRESHOLD VOLTAGE (mV)
6700123 G03
6700123 G01
6700123 G02
Rising Input Threshold Voltage
vs Temperature
Rising Input Threshold Voltage
vs Temperature
Rising Input Threshold Voltage
vs Supply Voltage
403.0
402.5
402.0
401.5
401.0
400.5
400.0
399.5
399.0
404
403
402
401
400
399
398
397
396
403.0
402.5
402.0
401.5
401.0
400.5
400.0
399.5
399.0
V
V
V
V
= 1.4V
= 5V
= 12V
= 18V
T
T
T
T
= 25°C
= 85°C
= 125°C
= –55°C
FOUR TYPICAL PARTS
S
S
S
S
A
A
A
A
V
= 5V
S
#1
#2
#3
#4
0
0
20 40 60 80
100 120
–60 –40 –20
20 40 60 80
8
10 12
–60 –40 –20
100 120
2
4
6
14 16 18
TEꢀPERATURE (°C)
TEꢀPERATURE (°C)
SUPPLY VOLTAGE (V)
6700123 G05
6700123 G04
6700123 G06
Hysteresis vs Temperature
Hysteresis vs Temperature
Hysteresis vs Supply Voltage
10
9
10
9
10
9
V
V
V
V
= 1.4V
= 5V
= 12V
= 18V
T
T
= 25°C
= 85°C
T
T
= 125°C
= –55°C
FOUR TYPICAL PARTS
S
S
S
S
A
A
A
A
V
= 5V
S
#1
#2
#3
#4
8
8
8
7
7
7
6
6
6
5
5
5
4
4
4
3
3
3
2
2
2
0
20 40 60 80
100 120
–60 –40 –20
0
20 40 60 80
8
10 12
–60 –40 –20
100 120
2
4
6
14 16 18
TEꢀPERATURE (°C)
TEꢀPERATURE (°C)
SUPPLY VOLTAGE (V)
6700123 G08
6700123 G07
6700123 G09
6700123ff
11
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Supply °urrent
vs Supply Voltage
Minimum Supply Voltage
Start-Up Supply °urrent
50
40
30
20
10
0
1
0
10
9
T
T
T
T
= 25°C
= 85°C
= 125°C
= –55°C
T
T
= 25°C
= 85°C
T
T
= 125°C
= –55°C
A
A
A
A
A
A
A
A
NO LOAD CURRENT
–1
–2
–3
–4
–5
8
7
6
T
T
T
T
= 25°C
= 85°C
= 125°C
= –55°C
A
A
A
A
5
4
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
SUPPLY VOLTAGE (V)
6700123 G12
0.9
1.1
1.3
1.5
1.7
1.9
7.4 9.4 11.4
1.4 3.4 5.4 13.4 15.4 17.4
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
6700123 G10
6700123 G11
Supply °urrent
vs Output Sink °urrent
Supply °urrent
vs Output Sink °urrent
Supply °urrent
vs Output Sink °urrent
1000
100
10
1000
100
10
1000
100
10
T
= –40°C
T
= 25°C
V
T
= 85°C
V
A
A
A
V
= 1.4V
= 5V
= 1.4V
= 5V
= 12V
= 18V
= 1.4V
= 5V
= 12V
= 18V
S
S
S
V
S
V
S
V
S
V
S
V
S
V
S
V
S
V
S
= 12V
= 18V
V
S
1
1
1
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
OUTPUT SINK CURRENT (mA)
OUTPUT SINK CURRENT (mA)
OUTPUT SINK CURRENT (mA)
6700123 G13
6700123 G14
6700123 G15
Below Ground Input Bias °urrent
Low Level Input Bias °urrent
High Level Input Bias °urrent
3
2
10000
1000
100
10
10
1
V
= 18V
CURRENT IS POSITIVE GOING
INTO THE DEVICE
CURRENT IS GOING INTO THE DEVICE
S
–0.3V < V < 0V
IB
T
T
T
T
= 25°C
= 85°C
= 125°C
= –55°C
A
A
A
A
1
0
–1
–2
–3
–4
–5
–6
–7
0.1
V
= 18V
IB
S
0V < V < 1V
V
V
= 18V
> 1V
S
IB
0.01
0.001
T
T
T
T
= 25°C
A
A
A
A
= 85°C
T
T
T
= 25°C
= 85°C
= 125°C
A
A
A
= 125°C
= –55°C
CURRENT IS GOING OUT OF THE DEVICE
–0.2 –0.1
INPUT VOLTAGE (V)
1
0.5 0.8 0.9
0.6 0.7
1
1
3
5
7
9
11 13 15 17
0
0.4
–0.3
0
0.1 0.2 0.3
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
6700123 G16
6700123 G18
6700123 G17
6700123ff
12
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
TYPICAL PERFORMANCE CHARACTERISTICS
Output Saturation Voltage
vs Output Sink °urrent
Output Saturation Voltage
vs Output Sink °urrent
Output Saturation Voltage
vs Output Sink °urrent
1000
100
10
1000
100
10
1000
100
10
T
= –40°C
T
= 25°C
V
T
= 85°C
V
A
A
A
V
= 1.4V
= 5V
= 1.4V
= 5V
= 1.4V
= 5V
S
S
S
V
S
V
S
V
S
V
S
V
S
V
S
V
S
V
S
= 12V
= 18V
= 12V
= 18V
= 12V
= 18V
V
S
1
1
1
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
OUTPUT SINK CURRENT (mA)
OUTPUT SINK CURRENT (mA)
OUTPUT SINK CURRENT (mA)
6700123 G19
6700123 G20
6700123 G21
Output Short-°ircuit °urrent
Output Short-°ircuit °urrent
Output Leakage °urrent
10
1
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
T
= 25°C
A
V
S
V
S
V
S
V
S
= 1.4V
= 5V
= 12V
= 18V
0.1
0.01
V
S
= 5V
T
= 25°C
= 85°C
= 125°C
= –55°C
A
A
A
A
T
T
T
V
S
= 5V
T
= 25°C
= 85°C
= 125°C
= –55°C
A
A
A
A
T
T
T
0.001
8
10 12
8
10 12
0
2
4
6
14 16 18
0
2
4
6
14 16 18
0
2
4
6
8
10 12 14 16 18
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
6700123 G24
6700123 G22
6700123 G23
Propagation Delay
vs Input Overdrive
Rise and Fall Times
vs Output Pull-Up Resistor
Noninverting and Inverting
°omparator Propagation Delay
100
10
60
50
40
30
20
10
0
V
C
T
= 5V
= 20pF
= 25°C
LH NONINV
HL NONINV
LH INV
T
= 25°C
S
L
A
A
V
O(NINV)
5V/DIV
DC
HL INV
V
O(INV)
5V/DIV
DC
RISE
FALL
1
V
IN
10mV/DIV
AC
0.1
0.01
6700123 G27
V
= 15V
20μs/DIV
S
A
T
= 25°C
R
V
= 10k CONNNECTED TO V
LOAD
S
= 10mV OVER THE INPUT
0.1
1
10
100
1000
IN(OVERDRIVE)
0
20
40
60
80
100
VOLTAGE THRESHOLDS
OUTPUT PULL-UP RESISTOR (kΩ)
INPUT OVERDRIVE (mV)
6700123 G26
6700123 G25
6700123ff
13
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
APPLICATIONS INFORMATION
The LT6700-1/LT6700-2/LT6700-3/LT6700HV-1/
LT6700HV-2/LT6700HV-3 devices are a family of dual
micropower comparators with a built-in 400mV refer-
ence. 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. The comparator’s open-collector outputs can
sink up to 40mA typical.
°omparator Inputs
A comparator input can swing from ground to 18V (36V
for LT6700HV), regardless of the supply voltage used. The
typical input current for inputs well above threshold (i.e.,
>800mV)isafewpAleakingintoaninput.Withdecreasing
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 parasitic ESD input pro-
tection diode. Inputs driven further negative than 100mV
below ground will not cause comparator malfunction or
damage (provided the current is limited to 10mA), but
the accuracy of the reference cannot be guaranteed, in
which case the output state of the alternate comparator
may be affected.
Internal Reference
Each of the comparator sections has one input available
externally, with the three versions of the part differing by
the polarity of those available inputs (i.e., inverting or
noninverting).Theothercomparatorinputsareconnected
internallytothe400mVreference.Therisinginputthreshold
voltage of the comparators 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.
°omparator Outputs
The comparator outputs are open collector and capable
of sinking 40mA typical. Load currents are directed out
the GND pin of the part. The output off-state voltage may
range between –0.3V and 18V (36V for LT6700HV) 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 total load
capacitor must be less than 100nF. If the output high state
is above 18V, caution must be taken to prevent a short
from the output directly to the bias voltage, even if the
outputisintheoffstate.Aswithanyopen-collectordevice,
the outputs may be tied together to implement wire-AND
logic functions.
Hysteresis
Eachcomparatorhasbuilt-in6.5mV(typical)hysteresisto
simplify designs, ensure 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
hysteresisisdesignedsuchthatthefallinginputthreshold
voltage is nominally 393.5mV. External positive feedback
circuitry can be employed with noninverting comparator
inputs 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).
6700123ff
14
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
APPLICATIONS INFORMATION
Power Supplies
simple 3-resistor voltage divider network. The section A
comparator provides the V trip-point and the section B
L
Thecomparatorfamilycorecircuitryoperatesfromasingle
1.4V to 18V supply. A minimum 0.1μF bypass capacitor
comparator provides the V trip-point, with the built-in
H
hysteresis providing about 1.7% recovery level at each
trip point to prevent output chatter.
is required between the V pin and GND. When an output
S
load is connected to the supply rail near the part and the
outputissinkingmorethan5mA,a1μFbypasscapacitoris
recommended. In instances where the supply is relatively
“soft” (such as with small batteries) and susceptible to
load steps, an additional 47ꢁ series decoupling resistor
can further improve isolation of supply transients from
For designs that are to be optimized to detect departure
from a window limit, the nominal resistor divider values
are selected as follows (refer to the resistor designators
shown on the first circuit of Figure 1):
R1 ≤ 400k (this sets the divider current >> I of inputs)
B
the V pin.
S
R2 = R1 • (0.98 • V /V – 1)
H
L
Fleꢀible Window °omparator
R3 = R1 • (2.5 • V – 0.98 • V /V )
H
H
L
Using the LT6700-1/LT6700HV-1 as shown in the circuits
of Figure 1, the wire-AND configuration permits high
accuracy window functions to be implemented with a
To create window functions optimized for detecting entry
into a window (i.e., where the output is to indicate a “com-
313V Supply Monitor
2V Supply Monitor
3.3V
5V
V
V
H
L
R3
V
OUT
487k
301k
V
V
S
S
33k
33k
+INA OUTA
LT6700-1
+INA OUTA
6.04k LT6700-1
–INB OUTB
0.1μF
0.1μF
R2
6.04k
V
S
V
V
OUT
OUT
–INB OUTB
GND
HIGH = (3.1V < V < 3.5V)
S
HIGH = (4.7V < V < 5.3V)
S
R1
40.2k
GND
40.2k
HYSTERESIS ZONES
APPROXIꢀATELY
2% OF TRIP VOLTAGE
6700123 F01
Figure ±1 Simple Window °omparator
6700123ff
15
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
APPLICATIONS INFORMATION
ing into spec” condition, as with the examples in Figure 1),
the nominal resistor values are selected as follows:
Generating an Eꢀternal Reference Signal
In some applications, it would be advantageous to have
access to a signal that is directly related to the internal
400mV reference, even though the reference itself is not
availableexternally.Thiscanbeaccomplishedtoareason-
able degree by using an inverting comparator section as
a “bang-bang” servo, establishing a nominal voltage, on
an integration capacitor, that is scaled to the reference.
This method is used in Figure 2, where the reference level
has been doubled to drive a resistor bridge. The section
B output cycles on and off to swing the section B input
between its hysteresis trip points as the load capacitor
charges and discharges in a shallow, controlled fashion.
The multiplied reference signal also contains ripple that is
the hysteresis multiplied by the same factor, so additional
filtering is performed at the sense node of the bridge to
prevent comparator chatter in the section A comparator,
which is performing the actual conditional decision for
the circuit.
R1 ≤ 400k (this sets the divider current >> I of inputs)
B
R2 = R1 • (1.02 • V /V – 1)
H
L
R3 = R1 • (2.54 • V – 1.02 • V /V )
H
H
L
The worst-case variance of the trip-points is related to
the specified threshold limits of the LT6700/LT6700HV
device and the basic tolerance of divider resistors used.
For resistor tolerance R (e.g. 0.01 for 1%), the worst-
TOL
case trip-point voltage (either V or V ) deviations can be
H
L
predicted as follows (italicized values are taken from the
datasheet, expressed in volts):
ꢀax dev V
= V
• {2 • R • [(V
– 0.4)
TRIP↑
TRIPnom
] + 1.25 • (V
TOL
– V
TRIPnom
)}
/ V
TRIPnom
TH(R)max
TH(R)min
ꢀaxdevV
= V
•{2•R •[(V
–0.39)
TRIP↓
TRIPnom
] + 1.27 • (V
TOL
– V
TRIPnom
)}
/ V
TRIPnom
TH(F)max
TH(F)min
0.1μF
1.4V TO 18V
(I ≈ 10μA)
S
2 • V
REF
R
499k
499k
220k 220k*
T < T
SET
V
S
+INA OUTA
SET
LT6700-1
10k
–INB OUTB
GND
R
3.3μF
3.3μF
TH
T
6700123 F02
R
R
= 1ꢀ (e.g., YSI 44015, 1.00ꢀΩ AT 25°C)
TH
= R AT T
SET
TH
SET
*RESISTANCE ꢀAY REQUIRE OPTIꢀIZATION FOR OPERATION
OVER INTENDED R AND V
HYSTERESIS ZONE ≈0.4°C
RANGES
TH
SUPPLY
Figure .1 Micropower Thermostat/Temperature Alarm
6700123ff
16
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
APPLICATIONS INFORMATION
Instrumentation Grade Pulse Width Modulator (PWM)
ance current that the NOT gate duty cycle is continually
correcting for, thus the digital waveform at the section A
Comparators with hysteresis are frequently employed
to make simple oscillator structures, and the LT6700/
LT6700HVlendsitselfnicelytoformingacharge-balancing
PWꢀfunction. ThecircuitshowninFigure3formsaPWꢀ
that is intended to transmit an isolated representation of a
voltage difference, rather like an isolated instrumentation
amplifier. The section B comparator is used to generate a
2VreferencesupplylevelfortheCꢀOSNOTgate(inverter),
whichservesastheprecisionswitchelementforthecharge
balancer. The heart of the charge balancer is the section A
comparator, which is detecting slight charge or discharge
states on the 0.22μF “integration” capacitor as it remains
balanced at ≈400mV by feedback through the NOT gate.
comparator output is a PWꢀ representation of V with
IN
respect to the 2V “full scale.” In this particular circuit, the
PWꢀ information drives the LED of an optocoupler, allow-
ing the V information to be coupled across a dielectric
IN
barrier. As an additional option to the circuit, the feedback
loopcanbebrokenandasecondoptocoupleremployedto
provide the charge balance management. This configura-
tion allows for clocking the comparator output (externally
to this circuit) and providing synchronous feedback such
that a simple Δ∑ voltage-to-frequency conversion can be
formedifdesired.Approximately11-bitaccuracyandnoise
performance was observed in a one second integration
period for duty factors from 1% to 99%.
The input sense voltage, V , is converted to an imbal-
IN
3V/5V
3V NOꢀ (I < 3mA)
S
10k
+
Lithium
COIN CELL
0.1μF
750Ω
PWꢀ OUT
10k**
(OR ΔΣ SENSE)
1
2
6
470Ω
5 • V
= 2V
REF
ꢀOC-207
22μF
412k*
10k 10k
V
NC7S14
309k*
S
309k*
††
5
+INA OUTA
LT6700-1
10k
0.1μF
3V/5V
750**
†
+
–INB OUTB
GND
V
IN
0.22μF
100k* 100k*
0V TO 2V
6
1
–
ꢀOC-207**
6700123 F03
*1% ꢀETAL FILꢀ
5
2
**DELETE FOR PWꢀ ꢀODE
†
ΔΣ
SAꢀPLE
IN
CONNECT FOR PWꢀ ꢀODE
††
OPTIꢀIZED FOR 2kHz ΔΣ SAꢀPLING, f
≈ 0.6kHz
PWꢀ(ꢀAX)
Figure 31 Isolated PWM or Δ∑ °onverter
6700123ff
17
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
PACKAGE INFORMATION
D°B Package
6-Lead Plastic DFN (.mm × 3mm)
(Reference LTC DWG # 05-08-1715)
0.70 0.05
1.65 0.05
(2 SIDES)
3.55 0.05
2.15 0.05
PACKAGE
OUTLINE
0.25 0.05
0.50 BSC
1.35 0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
R = 0.115
TYP
2.00 0.10
(2 SIDES)
0.40 0.10
R = 0.05
TYP
4
6
3.00 0.10 1.65 0.10
(2 SIDES)
(2 SIDES)
PIN 1 BAR
TOP MARK
(SEE NOTE 6)
PIN 1 NOTCH
R0.20 OR 0.25
× 45° CHAMFER
(DCB6) DFN 0405
3
1
0.25 0.05
0.50 BSC
0.75 0.05
0.200 REF
1.35 0.10
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (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
6700123ff
18
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
PACKAGE INFORMATION
S6 Package
6-Lead Plastic TSOT-.3
(Reference LTC DWG # 05-08-1636)
2.90 BSC
(NOTE 4)
0.62
MAX
0.95
REF
1.22 REF
1.4 MIN
1.50 – 1.75
2.80 BSC
3.85 MAX 2.62 REF
(NOTE 4)
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302 REV B
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
6700123ff
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
19
LT6700-1/LT6700-2/LT6700-3/
LT6700HV-1/LT6700HV-2/
LT6700HV-3
TYPICAL APPLICATIONS
PowerPath™ °ontroller
B0520LW
V
SUPPLY
“WART” INPUT
3.3V NOꢀ
1.6V ꢀIN
3V NOꢀ
Si2301DS
10k
1k
100k
1ꢀ
R2
1ꢀ
R1
+
+
ALKALINE
AA CELLS
V
S
+INA OUTA
V
V
> 3.1V
WART
LT6700-3
+INB OUTB
GND
> 2V
BATT
1μF
150k 249k
6700123 TA04
R1 = 400k/(V
R2 = 400k/(V
AT LOW – 0.4)
AT ꢀAX – 0.4)
BATT
BATT
HYSTERESIS ZONES APPROXIꢀATELY 2% OF TRIP VOLTAGE
PowerPath IS A TRADEꢀARK OF LINEAR TECHNOLOGY CORPORATION
48V Status Monitor
+
33k
22V
CꢀPZ5251B
1.74ꢀ
7.87k
V
V
L
3V/5V
H
V
S
LED OFF
+INA OUTA
V
OUT
V
LT6700-1
27k
33k
IN
V
OUT
–INB OUTB
GND
LED ON
LOW = (39V < V < 70V)
IN
1
6
V
IN
HYSTERESIS ZONES
APPROXIꢀATELY
2% OF TRIP VOLTAGE
0.1μF
ꢀOC-207
10k
2
5
5.1V
CꢀPZ5231B
6700123 TA03
–
RELATED PARTS
PART NUMBER
LT1017/LT1018
LTC1441/LTC1442
LTC1998
DES°RIPTION
ꢀicropower Dual Comparator
°OMMENTS
1.1V (ꢀin) Supply Voltage, 1.4mV (ꢀax) Input Offset
1.182 1% Reference, 10mV (ꢀax) Input Offset
ꢀicropower Dual Comparator with 1% Reference
ꢀicropower Comparator for Battery ꢀonitoring
ꢀicropower Comparator with 400mV Reference
2.5μA Typ Supply Current, Adjustable Threshold and Hysteresis
1.4V to 18V Supply Current, 6.5μA Supply Current
LT6703
6700123ff
LT 0908 REV F • PRINTED IN USA
LinearTechnology Corporation
1630 ꢀcCarthy Blvd., ꢀilpitas, CA 95035-7417
20
●
●
© LINEAR TECHNOLOGY CORPORATION 2003
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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SI9137DB
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