Document
FEATURES
n Internal 400mV Reference n Total Threshold Error: ±1.25% Max at 25°C n Wide Supply Range: 1.4V to 18V n Input and Output Operate to 36V n Specified for –40°C to 125°C Temperature Range n Low Quiescent Current: 6.5μA Typ at 5V n Internal Hysteresis: 6.5mV Typ n Low Input Bias Current: ±10nA Max n Over-The-Top® Input also Includes Ground n Open-Collector Output Allows Level Translation n Choice of Input Polarities: LT6703-2/LT6703-3/
LT6703HV-2/LT6703HV-3 n Available in 2mm × 2mm DFN and
Low Profile (1mm) SOT-23 (ThinSOT™) Packages
APPLICATIONS
n Battery-Powered System Monitoring n Threshold Detectors n Window Comparators n Relay Driving n Industrial Control Systems n Handheld Instruments n Automotive Monitor and Controls
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 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.
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.
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
Micropower Supply Voltage Monitor
1.4V ≤ VIN ≤ 18V (VTH = 3V)
1MΩ LT6703-3
+IN +
VS
0.1μF 154k
–
400mV REFERENCE
GND
1MΩ OUT
VS
670323 TA01
Rising Input Threshold Voltage vs Temperature
RISING INPUT THRESHOLD VOLTAGE (mV)
404 FOUR TYPICAL PARTS
403 VS = 5V #1
402 401 #2
400 #3
399
398 #4
397
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
TOP VIEW
4
1 23
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
TOP VIEW
OUT 1 GND 2 –IN 3
5 NC 4 VS
S5 PACKAGE 5-LEAD PLASTIC TSOT-23
TJMAX = 125°C, θJA = 250°C/W
OUT VS –IN
OUT VS +IN
LT6703-3
TOP VIEW
4
1 23
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 GND 2 +IN 3
5 NC 4 VS
S5 PACKAGE 5-LEAD PLASTIC TSOT-23
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
LT6703CDC-2#TRMPBF LT6703CDC-2#TRPBF LCWP
3-Lead (2mm × 2mm) Plastic DFN
LT6703IDC-2#TRMPBF LT6703IDC-2#TRPBF
LCWP
3-Lead (2mm × 2mm) Plastic DFN
LT6703HDC-2#TRMPBF LT6703HDC-2#TRPBF LCWP
3-Lead (2mm × 2mm) Plastic DFN
LT6703CDC-3#TRMPBF LT6703CDC-3#TRPBF LCTW
3-Lead (2mm × 2mm) Plastic DFN
LT6703IDC-3#TRMPBF LT6703IDC-3#TRPBF
LCTW
3-Lead (2mm × 2mm) Plastic DFN
LT6703HDC-3#TRMPBF LT6703HDC-3#TRPBF LCTW
3-Lead (2mm × 2mm) Plastic DFN
LT6703HVCS5-2#TRMPBF LT6703HVCS5-2#TRPBF LTDMN
5-Lead Plastic TSOT-23
LT6703HVIS5-2#TRMPBF LT6703HVIS5-2#TRPBF LTDMN
5-Lead Plastic TSOT-23
LT6703HVHS5-2#TRMPBF LT6703HVHS5-2#TRPBF LTDMN
5-Lead Pla.