LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
Micropower, Low Voltage
Comparator with
400mV Reference
FEATURES DESCRIPTION
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Internal 400mV Reference The LT 6703-2/LT6703-3/LT6703HV-2/LT6703HV-3 com-
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Total Threshold Error: 1.25% Max at 25C bine a micropower, low voltage comparator with a 400mV
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Wide Supply Range: 1.4V to 18V reference in a tiny DFN package. Operating with supplies
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Input and Output Operate to 36V from 1.4V up to 18V, these devices draw only 6.5A, making
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Speci ed for 40C to 125C Temperature Range them ideal for low voltage system monitoring. Hysteresis
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Low Quiescent Current: 6.5A Typ at 5V is included in the comparator, ensuring stable operation.
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Internal Hysteresis: 6.5mV Typ
The comparator has one input available externally while
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Low Input Bias Current: 10nA Max
the other input is connected internally to the reference.
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Over-The-Top Input also Includes Ground
The comparator output is open collector and the output
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Open-Collector Output Allows Level Translation
load can be referred to any voltage up to 18V (36V for
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Choice of Input Polarities: LT6703-2/LT6703-3/
LT6703HV) independent of supply voltage. The output
LT6703HV-2/LT6703HV-3
stage has a guaranteed current sink capability of more
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Available in 2mm 2mm DFN and
than 5mA over temperature.
Low Pro le (1mm) SOT-23 (ThinSOT) Packages
The two versions of this part differ by the polarity of the
available comparator input. The LT6703-2/LT6703HV-2
APPLICATIONS
has an inverting input and the LT6703-3/LT6703HV-3 has
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Battery-Powered System Monitoring
a noninverting input. Both versions are offered in com-
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Threshold Detectors
mercial, industrial and automotive temperature ranges.
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Window Comparators
L, LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered
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Relay Driving trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
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Industrial Control Systems
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Handheld Instruments
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Automotive Monitor and Controls
TYPICAL APPLICATION
Micropower Supply Voltage Monitor Rising Input Threshold Voltage vs Temperature
1.4V V 18V
IN
404
(V = 3V)
FOUR TYPICAL PARTS
TH
V = 5V
S
403
#1
402
V
S
LT6703-3
1M 1M
#2
401
+IN
+
400
OUT
#3
399
0.1F
398
154k
#4
V
S
400mV
397
REFERENCE
396
GND
60 40 20 0 20406080 100 120
670323 TA01
TEMPERATURE (C)
670323 TA01b
670323fd
1
RISING INPUT THRESHOLD VOLTAGE (mV)LT6703-2/LT6703-3
LT6703HV-2/LT6703HV-3
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Operating Temperature Range (Note 4)
Total Supply Voltage (V to GND) ..........................18.5V
S
LT6703C-2/-3/LT6703HVC-2/-3 ...........40C to 85C
Input Voltage (+IN, IN)
LT6703I-2/-3/LT6703HVI-2/-3 .............40C to 85C
(Note 3) ....................................... 18.5V to (GND 0.3V)
LT6703H-2/-3/LT6703HVH-2/-3 ........40C to 125C
LT6703HV .................................. 40V to (GND 0.3V)
Speci ed Temperature Range (Note 5)
Output Voltage (OUT) .................. 18.5V to (GND 0.3V)
LT6703HV .................................. 40V to (GND 0.3V) LT6703C-2/-3/LT6703HVC-2/-3 .............. 0C to 70C
Output Short-Circuit Duration (Note 2) ............ Inde nite LT6703I-2/-3/LT6703HVI-2/-3 .............40C to 85C
Input Current (Note 3) ..........................................10mA LT6703H-2/-3/LT6703HVH-2/-3 ........40C to 125C
Maximum Junction Temperature........................... 125C
Storage Temperature Range ...................65C to 125C
Lead Temperature (Soldering, 10 sec) .................. 300C
PIN CONFIGURATION
LT6703-2 LT6703-3
TOP VIEW TOP VIEW
4 4
1 2 3 1 2 3
DC PACKAGE DC PACKAGE
3-LEAD (2mm 2mm) PLASTIC DFN 3-LEAD (2mm 2mm) PLASTIC DFN
T = 125C, = 102C/W T = 125C, = 102C/W
JMAX JA JMAX JA
EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
LT6703HV-2 LT6703HV-3
TOP VIEW TOP VIEW
OUT 1 5 NC OUT 1 5 NC
GND 2 GND 2
IN 3 4 V +IN 3 4 V
S S
S5 PACKAGE S5 PACKAGE
5-LEAD PLASTIC TSOT-23 5-LEAD PLASTIC TSOT-23
T = 125C, = 250C/W T = 125C, = 250C/W
JMAX JA JMAX JA
670323fd
2
OUT
V
S
IN
OUT
V
S
+IN