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FEATURES
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 Micropower, Low Voltage Comparator with 400mV Reference DESCRIPTION
The LT(R)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 6.5A, 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.
Internal 400mV Reference Total Threshold Error: 1.25% Max at 25C Wide Supply Range: 1.4V to 18V Input and Output Operate to 36V Specified for -40C to 125C Temperature Range Low Quiescent Current: 6.5A Typ at 5V Internal Hysteresis: 6.5mV Typ Low Input Bias Current: 10nA Max Over-The-Top(R) 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 x 2mm DFN and Low Profile (1mm) SOT-23 (ThinSOTTM) Packages
APPLICATIONS
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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 VIN 18V (VTH = 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 VS = 5V
1M
LT6703-3 +IN
VS
1M
+
OUT
#3
0.1F 154k
-
400mV REFERENCE GND VS
670323 TA01
396 -60 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
670323 TA01b
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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 ...........-40C to 85C LT6703I-2/-3/LT6703HVI-2/-3 .............-40C to 85C LT6703H-2/-3/LT6703HVH-2/-3 ........-40C to 125C Specified Temperature Range (Note 5) LT6703C-2/-3/LT6703HVC-2/-3 .............. 0C to 70C LT6703I-2/-3/LT6703HVI-2/-3 .............-40C to 85C 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
TOP VIEW
LT6703-3
TOP VIEW
4
4
1 OUT
2 VS
3 -IN
1 OUT
2 VS
3 +IN 5 NC 4 VS
DC PACKAGE 3-LEAD (2mm x 2mm) PLASTIC DFN TJMAX = 125C, JA = 102C/W EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
DC PACKAGE 3-LEAD (2mm x 2mm) PLASTIC DFN TJMAX = 125C, JA = 102C/W EXPOSED PAD (PIN 4) IS GND, MUST BE SOLDERED TO PCB
LT6703HV-2
TOP VIEW OUT 1 GND 2 -IN 3 4 VS 5 NC
LT6703HV-3
TOP VIEW OUT 1 GND 2 +IN 3
S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 125C, JA = 250C/W
S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 125C, JA = 250C/W
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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 x 2mm) Plastic DFN 3-Lead (2mm x 2mm) Plastic DFN 3-Lead (2mm x 2mm) Plastic DFN 3-Lead (2mm x 2mm) Plastic DFN 3-Lead (2mm x 2mm) Plastic DFN 3-Lead (2mm x 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 0C to 70C - 40C to 85C - 40C to 125C 0C to 70C - 40C to 85C - 40C to 125C 0C to 70C - 40C to 85C - 40C to 125C 0C to 70C - 40C to 85C - 40C to 125C
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 VTH(R) VTH(F) HYS IB PARAMETER Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current
TA = 25C (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 A A s s s s A
CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive VS = 5V, 10mV Input Overdrive, RL = 10k, VOL = 400mV VS = 5V, 10mV Input Overdrive, RL = 10k, VOH = 0.9 * VS VS = 5V, 10mV Input Overdrive, RL = 10k VO = (0.1 to 0.9) * VS VS = 5V, 10mV Input Overdrive, RL = 10k VO = (0.1 to 0.9) * VS No Load Current, VS = 5V
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF tPD(HL) tPD(LH) tr tf IS
Output Low Voltage Output Leakage Current High-to-Low Propagation Delay Low-to-High Propagation Delay Output Rise Time Output Fall Time Supply Current
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 ELECTRICAL CHARACTERISTICS
SYMBOL VTH(R) VTH(F) HYS IB PARAMETER Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current
The l denotes the specifications which apply over the temperature range of 0C TA 70C, (LT6703C-2/LT6703C-3) unless otherwise specified (Notes 4, 5).
CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive No Load Current, VS = 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 A A A
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF IS
Output Low Voltage Output Leakage Current Supply Current
The l denotes the specifications which apply over the temperature range of -40C TA 85C, (LT6703I-2/LT6703I-3) unless otherwise specified (Notes 4, 5).
SYMBOL VTH(R) VTH(F) HYS IB PARAMETER Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive No Load Current, VS = 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 A A A
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF IS
Output Low Voltage Output Leakage Current Supply Current
The l denotes the specifications which apply over the temperature range of -40C TA 125C, (LT6703H-2/LT6703H-3) unless otherwise specified (Notes 4, 5).
SYMBOL VTH(R) VTH(F) HYS IB PARAMETER Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive VS = 1.4V, VOUT = 18V, VIN = 40mV Overdrive No Load Current, VS = 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 A A A
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF IS
Output Low Voltage Output Leakage Current Supply Current
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 ELECTRICAL CHARACTERISTICS
SYMBOL VTH(R) VTH(F) HYS IB PARAMETER Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current
TA = 25C, (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 A A s s s s A
CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V, 36V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS, VIN = 40mV Overdrive VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive VS = 5V, 10mV Input Overdrive, RL = 10k, VOL = 400mV VS = 5V, 10mV Input Overdrive, RL = 10k, VOH = 0.9 * VS VS = 5V, 10mV Input Overdrive, RL = 10k VO = (0.1 to 0.9) * VS VS = 5V, 10mV Input Overdrive, RL = 10k VO = (0.1 to 0.9) * VS No Load Current, VS = 5V
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF tPD(HL) tPD(LH) tr tf IS
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 0C TA 70C, (LT6703HVC-2/LT6703HVC-3) unless otherwise specified (Notes 4, 5).
SYMBOL PARAMETER VTH(R) VTH(F) HYS IB Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V, 36V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS, VIN = 40mV Overdrive VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive No Load Current, VS = 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 A A A
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF IS
Output Low Voltage Output Leakage Current Supply Current
The l denotes the specifications which apply over the temperature range of -40C TA 85C, (LT6703HVI-2/LT6703HVI-3) unless otherwise specified (Notes 4, 5).
SYMBOL VTH(R) VTH(F) HYS IB 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) RL = 100k, VO = 2V Swing, VS = 5V Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V HYS = VTH(R) - VTH(F) Input Bias Current VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V, 36V VS = 1.4V, 18V, VIN = 0.1V
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 ELECTRICAL CHARACTERISTICS
SYMBOL VOL IOFF IS PARAMETER Output Low Voltage Output Leakage Current Supply Current
The l denotes the specifications which apply over the temperature range of -40C TA 85C, (LT6703HVI-2/LT6703HVI-3) unless otherwise specified (Notes 4, 5).
CONDITIONS 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS, VIN = 40mV Overdrive VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive No Load Current, VS = 5V
l l l l
MIN
TYP
MAX 250 1 1 15
UNITS mV A A A
The l denotes the specifications which apply over the temperature range of -40C TA 125C, (LT6703HVH-2/LT6703HVH-3) unless otherwise specified (Notes 4, 5).
SYMBOL VTH(R) VTH(F) HYS IB PARAMETER Rising Input Threshold Voltage (Note 6) HYS = VTH(R) - VTH(F) Input Bias Current CONDITIONS RL = 100k, VO = 2V Swing, VS = 5V VS = 5V, RL = 100k, VO = 2V Swing VS = 1.4V, 18V, VIN = VS VS = 1.4V, VIN = 18V, 36V VS = 1.4V, 18V, VIN = 0.1V 10mV Input Overdrive, VS = 5V, IOUT = 5mA VS = 1.4V, 18V, VOUT = VS , VIN = 40mV Overdrive VS = 18V, VOUT = 18V, (36V, RL = 100k), VIN = 40mV Overdrive No Load Current, VS = 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 17.0
UNITS mV mV mV nA nA nA mV A A A
Falling Input Threshold Voltage (Note 6) RL = 100k, VO = 2V Swing, VS = 5V
VOL IOFF IS
Output Low Voltage Output Leakage Current Supply Current
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 -40C to 85C.
The LT6703H-2/-3/LT6703HVH-2/-3, is guaranteed functional over the operating temperature range of -40C to 125C. Note 5: The LT6703C-2/-3/LT6703HVC-2/-3, are guaranteed to meet the specified performance from 0C to 70C. The LT6703C-2/-3/LT6703HVC2/-3 are designed, characterized and expected to meet specified performance from -40C to 85C but are not tested or QA sampled at these temperatures. The LT6703I-2/-3/LT6703HVI-2/-3, are guaranteed to meet specified performance from -40C to 85C. The LT6703H-2/3/LT6703HVH-2/-3, is guaranteed to meet specified performance from -40C to 125C. 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.
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 PIN FUNCTIONS
VS LT6703-2 LT6703HV-2 -IN LT6703-3 LT6703HV-3 VS
-
OUT
+IN
+
OUT
+
400mV REFERENCE VS
-
400mV REFERENCE
670323 PF02
VS
670323 PF03
GND
GND
TYPICAL PERFORMANCE CHARACTERISTICS
Distribution of Rising Input Threshold Voltage
18 16 PERCENT OF UNITS (%) 14 12 10 8 6 4 2 0 394 396 398 400 402 404 406 RISING INPUT THRESHOLD VOLTAGE (mV)
670323 G01
Distribution of Falling Input Threshold Voltage
18 16 PERCENT OF UNITS (%) 14 12 10 8 6 4 2 0 388 390 392 394 396 398 400 FALLING INPUT THRESHOLD VOLTAGE (mV)
670323 G02
Distribution of Hysteresis
20 18 16 PERCENT OF UNITS (%) 14 12 10 8 6 4 2 0 4 4.8 5.6 6.4 7.2 HYSTERESIS (mV) 8 8.8
670323 G03
VS = 5V TA = 25C
VS = 5V TA = 25C
VS = 5V TA = 25C
Rising Input Threshold Voltage vs Temperature
RISING INPUT THRESHOLD VOLTAGE (mV) 403 402 401 400 399 398 397 #4 #2 RISING INPUT THRESHOLD VOLTAGE (mV) 404 #1 FOUR TYPICAL PARTS VS = 5V 403.0 402.5 402.0 401.5 401.0 400.5 400.0 399.5
Rising Input Threshold Voltage vs Temperature
VS = 1.4V VS = 5V VS = 12V VS = 18V RISING INPUT THRESHOLD VOLTAGE (mV) 403.0 402.5 402.0 401.5 401.0 400.5 400.0 399.5 399.0
Rising Input Threshold Voltage vs Supply Voltage
TA = 25C TA = 85C TA = 125C TA = -55C
#3
396 -60 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
670323 G04
399.0 -60 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
670323 G05
2
4
8 10 12 14 6 SUPPLY VOLTAGE (V)
16
18
670323 G06
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 TYPICAL PERFORMANCE CHARACTERISTICS
Hysteresis vs Temperature
10 FOUR TYPICAL PARTS 9 VS = 5V #1 #2 8 #3 #4 7 6 5 4 3 2 -60 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
670323 G07
Hysteresis vs Temperature
10 9 8 HYSTERESIS (mV) 7 6 5 4 3 2 -60 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
670323 G08
Hysteresis vs Supply Voltage
10 9 8 HYSTERESIS (mV) 7 6 5 4 3 2 2 4 8 10 12 14 6 SUPPLY VOLTAGE (V) 16 18 TA = 25C TA = 85C TA = 125C TA = -55C
VS = 1.4V VS = 5V VS = 12V VS = 18V
HYSTERESIS (mV)
670323 G09
Minimum Supply Voltage
1 0 THRESHOLD SHIFT (mV) SUPPLY CURRENT (A) -1 -2 -3 -4 -5 0.9 TA = 25C TA = 85C TA = 125C TA = -55C 1.1 1.3 1.7 1.5 SUPPLY VOLTAGE (V) 1.9
670323 G10
Quiescent Supply Current vs Supply Voltage
10 TA = 25C TA = 85C TA = 125C TA = -55C SUPPLY CURRENT (A) 50
Start-Up Supply Current
TA = 25C TA = 85C TA = 125C TA = -55C
9 NO LOAD CURRENT 8 7 6 5 4 1.4 3.4 5.4 7.4 9.4 11.4 13.4 15.4 17.4 SUPPLY VOLTAGE (V)
670323 G11
40
30
20
10
0
0
0.2
0.4 0.6 0.8 1.0 1.2 SUPPLY VOLTAGE (V)
1.4
670323 G12
Supply Current vs Output Sink Current
1000 TA = -40C VS = 1.4V VS = 5V VS = 12V VS = 18V 1000
Supply Current vs Output Sink Current
TA = 25C VS = 1.4V VS = 5V VS = 12V VS = 18V 1000
Supply Current vs Output Sink Current
TA = 85C VS = 1.4V VS = 5V VS = 12V VS = 18V
SUPPLY CURRENT (A)
SUPPLY CURRENT (A)
100
100
SUPPLY CURRENT (A) 100
670323 G14
100
10
10
10
1 0.001
0.1 1 10 0.01 OUTPUT SINK CURRENT (mA)
100
670323 G13
1 0.001
0.01 0.1 1 10 OUTPUT SINK CURRENT (mA)
1 0.001
0.01 0.1 1 10 OUTPUT SINK CURRENT (mA)
100
670323 G15
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 TYPICAL PERFORMANCE CHARACTERISTICS
Below Ground Input Bias Current
10000 VS = 18V -0.3V < VIN < 0V TA = 25C TA = 85C TA = 125C TA = -55C 3
Low Level Input Bias Current
CURRENT IS POSITIVE GOING 2 INTO THE DEVICE INPUT BIAS CURRENT (nA) INPUT BIAS CURRENT (nA) 1 0 -1 -2 -3 -4 -5 -6 0 -7 0 VS = 18V 0V < VIN < 1V TA = 25C TA = 85C TA = 125C TA = -55C 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 INPUT VOLTAGE (V) 1 10
High Level Input Bias Current
CURRENT IS GOING INTO THE DEVICE
INPUT BIAS CURRENT (nA)
1000
1
100
0.1
10
1 -0.3
CURRENT IS GOING OUT OF THE DEVICE -0.1 -0.2 INPUT VOLTAGE (V)
VS = 18V 0.01 VIN > 1V TA = 25C TA = 85C TA = 125C 0.001 1 3 5 7 9 11 13 INPUT VOLTAGE (V)
15
17
670323 G16
670323 G17
670323 G18
Output Saturation Voltage vs Output Sink Current
1000 OUTPUT SATURATION VOLTAGE (mV) TA = -40C VS = 1.4V VS = 5V VS = 12V VS = 18V 1000 OUTPUT SATURATION VOLTAGE (mV)
Output Saturation Voltage vs Output Sink Current
1000 OUTPUT SATURATION VOLTAGE (mV) TA = 25C VS = 1.4V VS = 5V VS = 12V VS = 18V
Output Saturation Voltage vs Output Sink Current
TA = 85C VS = 1.4V VS = 5V VS = 12V VS = 18V
100
100
100
10 0.001
0.1 1 10 0.01 OUTPUT SINK CURRENT (mA)
100
670323 G19
10 0.001
0.01 0.1 1 10 OUTPUT SINK CURRENT (mA)
100
670323 G20
10 0.001
0.01 0.1 1 10 OUTPUT SINK CURRENT (mA)
100
670323 G21
Output Short-Circuit Current
80 SHORT-CIRCUIT CURRENT (mA) SHORT-CIRCUIT CURRENT (mA) 70 60 50 40 30 20 10 0 0 2 4 VS = 5V TA = 25C TA = 85C TA = 125C TA = -55C 8 10 12 14 6 OUTPUT VOLTAGE (V) 16 18 80 70 60 50 40 30 20 10 0
Output Short-Circuit Current
10 OUTPUT LEAKAGE CURRENT (nA)
Output Leakage Current
1
TA = 25C VS = 1.4V VS = 5V VS = 12V VS = 18V
0.1
0.01
VS = 5V TA = 25C TA = 85C TA = 125C TA = -55C
0.001 0 2 4 8 10 12 14 6 OUTPUT VOLTAGE (V) 16 18 0 2 4 6 8 10 12 14 OUTPUT VOLTAGE (V) 16 18
670323 G22
670323 G23
670323 G24
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9
LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 TYPICAL PERFORMANCE CHARACTERISTICS
Propagation Delay vs Input Overdrive
60 50 PROPAGATION DELAY (s) 40 30 20 10 0 0.01 0.1 TA = 25C LH NONINV HL NONINV LH INV HL INV 100
Rise and Fall Times vs Output Pull-Up Resistor
VS = 5V CL = 20pF TA = 25C RISE 1 FALL VO(NINV) 5V/DIV DC VO(INV) 5V/DIV DC VIN 10mV/DIV AC
Noninverting and Inverting Comparator Propagation Delay
RISE AND FALL TIME (s)
10
0.1
0
20
60 80 40 INPUT OVERDRIVE (mV)
100
670323 G25
1 10 100 OUTPUT PULL-UP RESISTOR (k)
1000
670323 G27 20s/DIV VS = 5V TA = 25C RLOAD = 10k CONNECTED TO VS VIN(OVERDRIVE) = 10mV OVER THE INPUT VOLTAGE THRESHOLDS
670323 G26
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
Internal Reference 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
VS R1 VIN R2 +IN LT6703-3 GND
670323 F01
R4 OUT VOUT
THRESHOLD EQUATIONS: VIN (L TO H) = (400mV) * (R1) * 1 R1 1 R1 + + 1 R2 1 R2 + + 1 R3 1 R3 + R4 - VS * R1 R3 + R4
VIN (H TO L) = (393mV) * (R1) *
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
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10
LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 APPLICATIONS INFORMATION
Comparator Input 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. 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. Power Supplies The comparator circuitry operates from a single 1.4V to 18V supply. A minimum 0.1F 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 1F bypass capacitor is recommended. In instances where the supply is relatively "soft" (such as with small batteries) and susceptible to load steps, an additional 47 series decoupling resistor can further improve isolation of supply transients from the VS pin.
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 PACKAGE DESCRIPTION
DC Package 3-Lead Plastic DFN (2mm x 2mm)
(Reference LTC DWG # 05-08-1717 Rev A)
1.35 0.05 (2 SIDES)
1.00 0.05 1.30 0.05 (2 SIDES) 2.00 0.05
PACKAGE OUTLINE
0.25 0.50 BSC
0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 1.35 0.05 (2 SIDES) R = 0.05 TYP 2.00 0.10 (4 SIDES) 1.00 0.05 (2 SIDES)
PIN 1 BAR TOP MARK (SEE NOTE 6)
PIN 1 NOTCH R = 0.20 OR 0.25 45 CHAMFER 3 1 R = 0.125 TYP 0.05 0.25 0.50 BSC
(DC3) DFN 0309 REV A
0.40 0.10 0.200 REF 0.75 0.05 0.70 0.05
BOTTOM VIEW--EXPOSED PAD
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
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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
3.85 MAX 2.62 REF
1.4 MIN
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 DATUM `A' 1.00 MAX 0.01 - 0.10
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
0.30 - 0.50 REF
1.90 BSC
S5 TSOT-23 0302 REV B
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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.
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LT6703-2/LT6703-3 LT6703HV-2/LT6703HV-3 TYPICAL APPLICATIONS
1.8V 12V 5V LED (ON IF ILOAD > 4A) ILOAD VOUT 1.8V 0V RS 0.1 -IN GND LOAD VS LT6703-2 OUT 1k VS 15V 0V +IN GND LT6703-3 OUT 10k
Level Translator High Voltage to Low Voltage
1.8V 0V +IN
1.8V 15V
Low Side Current Sense Alarm
VS LT6703-3 OUT GND VOUT 0V 10k 15V
Level Translator Low Voltage to High Voltage
670323 TA02
RELATED PARTS
PART NUMBER LT1017/LT1018 LTC1441/LTC1442 LTC1998 LT6700 DESCRIPTION Micropower Dual Comparator Micropower Dual Comparator with 1% Reference Micropower Comparator for Battery Monitoring Dual Micropower Comparator with 400mV Reference COMMENTS 1.1V (Min) Supply Voltage, 1.4mV (Max) Input Offset 1.182 1% Reference, 10mV (Max) Input Offset 2.5A Typ Supply Current, Adjustable Threshold and Hysteresis 1.4V to 18V Supply Voltage, 6.5A Typical Supply Current
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14 Linear Technology Corporation
(408) 432-1900 FAX: (408) 434-0507
LT 0609 REV D * PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2006

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