LTC6702CTS8-TRMPBF [Linear]
Tiny Micropower, Low Voltage Dual Comparators; 微小的微功耗，低电压双路比较器
| 型号： | LTC6702CTS8-TRMPBF |
| 厂家： | 
Linear |
| 描述： | Tiny Micropower, Low Voltage Dual Comparators |
| 文件： | 总12页 (文件大小：187K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC6702
Tiny Micropower,
Low Voltage
Dual Comparators
FEATURES
DESCRIPTION
The LTC®6702 is an extremely small dual comparator
designed to maximize battery life while providing both
speed and low voltage operation in applications where
board space is a premium.
n
Low Supply Operation: 1.7V Minimum
n
Low Supply Current: 30μA/Comparator Maximum
n
Propagation Delay: 500ns Maximum (–40°C to
125°C)
3.2MHz Toggle Frequency
n
Thesecomparatorsoperateonsuppliesbetween1.7Vand
5.5V, and have a maximum guaranteed propagation delay
of 500ns while drawing only 30μA maximum quiescent
current. Internal hysteresis desensitizes the LTC6702 to
input noise and makes it easy to use, even with slow mov-
ing signals. CMOS inputs allow the use of large source
impedances.
n
Input Voltage Range Extends 100mV Below Ground
n
Internal Hysteresis: 4mV
n
High Output Drive: TTL and CMOS Compatible
Specified at 15mA ꢀ(40ꢁC to 125ꢁCꢂ,
Capacitive Load Handling to 10,000pF
n
Specified for (40ꢁC to 125ꢁC Temperature Range
n
Available in SOT-23 and 2mm × 2mm DFN Package
The LTC6702 is available in the 8-pin SOT-23 and the tiny
2mm × 2mm DFN package.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIONS
n
Battery Powered Systems
n
Window Comparators
n
Threshold Detectors/Discriminators
n
Clock Regeneration
n
Automotive Sensing and Controls
TYPICAL APPLICATION
Clock Regeneration Circuit
Propagation Delay vs Input Overdrive
+
V
= 3V
600
+
V
V
= 5V
= 100mV
C
A
= 10pF
LOAD
T
= 25°C
STEP
IN
LT6650
OUT
1/2 LTC6702
500
400
V
= 400mV
REFERENCE
FALLING
R
+
–
–
+
C1
0.1MF
RISING
1k
0.1MF
RECOVERED
CLOCK
ꢀUP TO 3.2MHzꢂ
300
200
100
FB
6702 TA01
CLOCK INPUT > 100mV
P-P
40
INPUT OVERDRIVE ꢀmVꢂ
0
10 20 30
50 60 70 80
6702 TA01b
6702f
1
LTC6702
ABSOLUTE MAXIMUM RATINGS
(Note 1)
+
LTC6702C ............................................... 0ꢁC to 70ꢁC
LTC6702I .............................................(40ꢁC to 85ꢁC
LTC6702H .........................................(40ꢁC to 125ꢁC
Junction Temperature .......................................... 150ꢁC
Storage Temperature Range...................(65ꢁC to 150ꢁC
Lead Temperature ꢀSoldering, 10 secꢂ
Supply Voltage ꢀV to GNDꢂ........................................6V
Input Voltage...............................................................6V
Input Current........................................................(10mA
Output Short-Circuit Duration ꢀNote 2ꢂ ............ Indefinite
Operating Temperature Range ꢀNote 3ꢂ
LTC6702C ...........................................(40ꢁC to 85ꢁC
LTC6702I .............................................(40ꢁC to 85ꢁC
LTC6702H .........................................(40ꢁC to 125ꢁC
Specified Temperature Range ꢀNote 4ꢂ
TSOT Packages................................................. 300ꢁC
PIN CONFIGURATION
TOP VIEW
TOP VIEW
+
+
OUT A
(IN A
+IN A
GND
1
2
3
4
8
7
6
5
V
9
OUT A
(IN A
+IN A
GND
V
OUT B
(IN B
+IN B
A
OUT B
(IN B
+IN B
B
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
= 150ꢁC, θ = 130ꢁC/W
DC PACKAGE
8-LEAD ꢀ2mm × 2mmꢂ PLASTIC DFN
T
JMAX
JA
T
= 150ꢁC, θ = 102ꢁC/W
JA
JMAX
EXPOSED PAD ꢀPIN 9ꢂ IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
LTC6702CDC#TRMPBF
LTC6702IDC#TRMPBF
LTC6702HDC#TRMPBF
LTC6702CTS8#TRMPBF
LTC6702ITS8#TRMPBF
LTC6702HTS8#TRMPBF
TAPE AND REEL
PART MARKING*
LCZJ
LCZJ
LCZJ
LTCZK
PACKAGE DESCRIPTION
TEMPERATURE RANGE
0ꢁC to 70ꢁC
(40ꢁC to 85ꢁC
(40ꢁC to 125ꢁC
0ꢁC to 70ꢁC
LTC6702CDC#TRPBF
LTC6702IDC#TRPBF
LTC6702HDC#TRPBF
LTC6702CTS8#TRPBF
LTC6702ITS8#TRPBF
LTC6702HTS8#TRPBF
8-Lead ꢀ2mm × 2mmꢂ Plastic DFN
8-Lead ꢀ2mm × 2mmꢂ Plastic DFN
8-Lead ꢀ2mm × 2mmꢂ Plastic DFN
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
LTCZK
LTCZK
(40ꢁC to 85ꢁC
(40ꢁC to 125ꢁC
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/
6702f
2
LTC6702
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full specified
temperature range, otherwise specifications are at TA = 25°C. V+ = 3V, VCM = 1.5V, COUT = 20pF, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
l
l
l
V
Supply Voltage
Guaranteed by PSRR
1.7
5.5
V
+
I+
Supply Current per Comparator
V = 3V
24
25
1
30
40
μA
μA
+
V = 5V
32
42
μA
μA
V
V
Input Offset Voltage
ꢀNote 5ꢂ
LTC6702C/LTC6702I
LTC6702H
3.5
5
6
mV
mV
mV
OS
l
l
Input Hysteresis Voltage
ꢀNote 5ꢂ
LTC6702C/LTC6702I
LTC6702H
2.5
1.6
1.6
4.3
6.2
7.2
8.2
mV
mV
mV
HYST
l
l
l
ΔV /ΔT
Input Offset Voltage Drift
Input Leakage Current
ꢀNote 5ꢂ
6
μV/ꢁC
OS
I
IN
0.001
nA
nA
nA
l
l
LTC6702C/LTC6702I
LTC6702H
1
10
CMRR
PSRR
Common Mode Rejection Ratio
V
= (0.1V to V ( 1.2V
58
56
70
65
dB
dB
CM
DD
l
l
Input Voltage Range
Guaranteed by CMRR
(0.1
V
DD
( 1.2
V
+
Power Supply Rejection Ratio
V = 1.7V to 5.5V, V = 0.5V
56
54
dB
dB
CM
l
V
V
Output Swing Low
Output Swing High
Propagation Delay
Overdrive = 20mV ꢀNote 6ꢂ
SINK
SINK
mV
mV
mV
OL
l
l
I
I
= 100μA
= 15mA
10
250
Overdrive = 20mV ꢀNote 6ꢂ
mV
mV
mV
OH
l
l
I
I
= 100μA
= 15mA
10
350
SOURCE
SOURCE
t
PD
ꢀNote 7ꢂ
320
450
500
ns
ns
l
Δt
Differential Propagation Delay
Propagation Delay Skew
Output Rise Time
Between Channels
4
ns
ns
PD
SKEW
r
t
t
t
f
I
Between t
/t
4
PDLH PDHL
11
15
3.2
250
ns
Output Fall Time
ns
f
Maximum Toggle Frequency
Short-Circuit Current
MHz
mA
MAX
SC
+
V
= 5V
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.
meet specified performance from (40ꢁC to 85ꢁC but is not tested or
QA sampled at these temperatures. The LTC6702I is guaranteed to meet
specified performance from (40ꢁC to 85ꢁC. The LTC6702H is guaranteed
to meet specified performance from (40ꢁC to 125ꢁC.
Note 2: A heat sink may be required to keep the junction temperature
below absolute maximum. This depends on the power supply voltage and
Note 5: The LTC6702 comparators include internal hysteresis. The offset
voltage is defined as the average of the input voltages ꢀtrip pointsꢂ
how many comparators are shorted. The θ specified for the DC and
required to change the output in each direction minus V , while the
JA
CM
TS packages is with minimal PCB heat spreading metal. Using expanded
metal area on all layers of a board reduces this value.
hysteresis voltage is the difference of these trip points.
Note 6: Output voltage swings are measured between the output and
Note 3: The LTC6702C and LTC6702I are guaranteed functional over
the temperature range of (40ꢁC to 85ꢁC. The LTC6702H is guaranteed
functional over the operating temperature range of (40ꢁC to 125ꢁC.
power supply rails.
Note 7: Propagation delay is for 200mV steps, and 50mV of overdrive.
Overdrive is measured relative to the positive and negative trip points.
Note 4: The LTC6702C is guaranteed to meet specified performance from
0ꢁC to 70ꢁC. The LTC6702C is designed, characterized and expected to
6702f
3
LTC6702
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current
vs Supply Voltage
Supply Current
vs Temperature
Input Leakage Current
vs Input Voltage
35
30
50
40
30
20
5
4
+
V
= 3V
+
V
= 3V
+
125°C
V
= 5V
25
20
15
10
5
+
V
= 1.7V
3
125°C
25°C
2
(55°C
1
(55°C
85°C
10
0
0
25°C
0
(1
50
TEMPERATURE ꢀ°Cꢂ
100 125
(50 (25
0
25
75
0
2
3
4
5
6
1
(1
1
2
3
4
5
6
0
SUPPLY VOLTAGE ꢀVꢂ
INPUT VOLTAGE ꢀVꢂ
6702 G01
6702 G03
6702 G02
Input Offset Current
vs Input Voltage
Maximum Toggle Rate
vs Temperature
Supply Current vs Toggle Rate
100
90
80
70
60
50
40
30
20
450
400
350
300
250
200
150
100
50
4
3
2
+
V
STEP
= 200mV
V
= 3V
V
STEP
= 200mV
125°C
OVERDRIVE = 100mV
= 10pF
OVERDRIVE = 100mV
= 25°C
85°C
25°C
C
T
LOAD
A
NO C
(55°C
LOAD
+
+
V
= 5V
V
= 3V
+
V
= 3V
+
V
= 5V
+
V
= 1.7V
+
10
0
V
= 1.7V
0
50
TEMPERATURE ꢀ°Cꢂ
100 125
(50 (25
0
25
75
(1
1
2
3
4
5
6
10k
100k
1M
10M
0
INPUT VOLTAGE ꢀVꢂ
TOGGLE RATE ꢀHzꢂ
6702 G04
6702 G05
6702 G06
Input Offset Voltage
vs Supply Voltage
Input Common Mode Limits
vs Temperature
Hysteresis vs Supply Voltage
+
V
5
4
8
7
6
5
+
+
V
(0.5
(1.0
(1.5
25°C
3
125°C
2
V
V
125°C
1
25°C
+
(55°C
4
3
0
(55°C
(1
(2
(3
(4
(5
GND
(0.5
(1.0
2
1
0
2
3
5
50
TEMPERATURE ꢀ°Cꢂ
100 125
1
6
(50 (25
0
25
75
4
1
2
3
4
5
6
SUPPLY VOLTAGE ꢀVꢂ
SUPPLY VOLTAGE ꢀVꢂ
6702 G09
6702 G08
6702 G07
6702f
4
LTC6702
TYPICAL PERFORMANCE CHARACTERISTICS
Propagation Delay
Propagation Delay
Output Rise and Fall
Times vs Load Capacitance
vs Load Capacitance
vs Supply Voltage
800
1000
100
10
420
V
= 100mV
V
STEP
= 100mV
V
C
= 100mV
= 10pF
STEP
25°C, 125°
(55°C
STEP
LOAD
OVERDRIVE = 50mV
OVERDRIVE = 50mV
T = 25°C
400
380
360
340
320
300
280
700
600
500
400
300
200
T
= 25°C
A
A
t
f
t
r
+
V
= 1.7V
t
t
f
r
RISING
FALLING
FALLING
RISING
t
f
FALLING
RISING
RISING
t
+
+
+
r
V
V
V
= 1.7V
= 3V
FALLING
+
V
= 3V, 5V
= 5V
1
10
100
1000
10000
10
100
1000
10000
2
3
5
1
6
4
LOAD CAPACITANCE ꢀpFꢂ
LOAD CAPACITANCE ꢀpFꢂ
SUPPLY VOLTAGE ꢀVꢂ
6702 G12
6702 G10
6702 011
Output Low Voltage
vs Load Current
Output High Voltage
vs Load Current
Output Voltage vs Temperature
1.0
0.1
1.0
0.1
90
80
70
60
50
40
30
20
10
+
T
= 25°C
T
= 25°C
HIGH = V ( V
OUT
A
A
+
+
I
= ±4mA
OUT
V
= 1.7V
V
= 1.7V
HIGH
LOW
+
+
V
= 3V
V
= 3V
+
V
= 1.7V
+
+
V
= 5V
V
= 5V
HIGH
LOW
0.01
0.001
0.01
0.001
+
V
= 5V
0
0.1
1
10
100
0.1
1
10
100
(50 (25
0
25
125
50
75 100
SINK CURRENT ꢀmAꢂ
SOURCE CURRENT ꢀmAꢂ
TEMPERATURE ꢀ°Cꢂ
6702 G13
6702 G14
6702 G15
Propagation Delay
Propagation Delay with Load
1MHz Sinusoid Response
10k
V
V
OUT
V
OUT
OUT
1V/DIV
1V/DIV
1V/DIV
200Ω
GND
GND
GND
V
V
IN
V
IN
IN
50mV/DIV
50mV/DIV
50mV/DIV
6702 G18
6702 G16
6702 G17
200ns/DIV
+
100ns/DIV
100ns/DIV
+
+
L
V
C
V
= 3V
V
C
V
= 3V
V
C
= 3V
V
= 500mV
CM
= 20pF
= 20pF
L
= 20pF
R
L
= 10k, 200Ω
L
= 500mV
CM
= 500mV
CM
6702f
5
LTC6702
PIN FUNCTIONS
OUT A (Pin 1): Output of Comparator A.
–IN A (Pin 2): Inverting Input of Comparator A.
+IN A (Pin 3): Noninverting Input of Comparator A.
GND (Pin 4): Ground.
–IN B (Pin 6): Inverting Input of Comparator B.
OUT B (Pin 7): Output of Comparator B.
+
V (Pin 8): Positive Supply Voltage
Exposed Pad (Pin 9, DC Package Only): Ground. The
Exposed Pad must be soldered to PCB.
+IN B (Pin 5): Noninverting Input of Comparator B.
SIMPLIFIED SCHEMATIC
+
V
+IN
(IN
750Ω
750Ω
OUT
GND
6702 SS
6702f
6
LTC6702
APPLICATIONS INFORMATION
The LTC6702 device is a fast ꢀ500ns delayꢂ, low power,
low voltage ꢀ1.7V to 5.5V supplyꢂ general purpose dual
comparator.Itprovidesrail-to-railoutputsabletointerface
toTTL/CMOS,drawslowsupplycurrentsꢀ30μA/compara-
torꢂ, and has internal hysteresis ꢀapproximately 4mVꢂ.
Input Protection
Externalinputprotectioncircuitryisonlyneededifcurrents
would otherwise exceed the absolute maximum rating.
Inputs driven further negative than 100mV below ground
will not cause damage provided the current is limited to
10mA. ESD protection diodes are provided to prevent
damage during handling.
Hysteresis
Eachcomparatorhasbuilt-inhysteresistosimplifydesigns,
to insure stable operation in the presence of noise at the
inputs,andtorejectsupplyrailnoise.Thereferencevoltage
applied to the input is not the exact switching threshold
valueduetothebuilt-inhysteresis.Actualoutputswitching
typically occurs within 2.2mV of the reference voltage,
plus or minus the input offset voltage. External positive
feedback circuitry can be employed to increase effective
hysteresis if desired as shown in Figure 1. This circuitry
will provide an apparent effect on both the rising and fall-
ing input thresholds ꢀthe actual internal trip points remain
unaffectedꢂ.Ifaninvertingconfigurationwithhysteresisis
Comparator Input
Theallowableinputvoltagerangesfrom100mVbelowGND
to within 1.2V of the positive supply. The input may be
forced below ground without causing an improper output,
though some additional input current will begin to flow
from the ESD input protection diode. The inputs can reach
+
up to 6V independent of the V supply voltage without
causing additional input current or damage to the part.
As long as one input is within the allowable input voltage
range, the LTC6702 will continue to function normally.
needed, simply swap the V and V connections.
IN
REF
Comparator Output
The comparator output is a push-pull CMOS stage
Unused Inputs
+
guaranteed to swing to within 350mV of V and 250mV
Any unused inputs should be connected in a way that fixes
the output logic state high or low. One easy way to do this
is to tie +IN to V and (IN to GND.
of ground, over temperature when sourcing or sinking
15mA. No external pull-up/down resistor is required. To
+
R1
R3
Additional Hystersis =
• V+
Trip Voltages:
1
1
1
ꢁ
ꢂ
ꢄ
ꢅ
VIN(LꢀH) = VREF • R1•
+
+
ꢃ
ꢆ
R1 R2 R3
R3
1
1
1
R1
R3
ꢁ
ꢂ
ꢄ
ꢅ
ꢁ
ꢂ
ꢄ
ꢅ
VIN(HꢀL) = VREF • R1•
+
+
ꢇ
• V+
ꢃ
ꢆ
ꢃ
ꢆ
R1 R2 R3
R1
+
V
IN
1/2 LTC6702
Example: Additional Hysteresis = 50mV, V+ = 5V
R1=10k
V
REF
–
R2
R2= 249k
R3=1M
FOR VREF = 0.5V:VIN (L ꢀH)= 0.525V
6702 F01
V
IN (HꢀL)= 0.475V
Figure 1. Additional Hysteresis Circuit for Noninverting Configuration
6702f
7
LTC6702
APPLICATIONS INFORMATION
maintain micropower operation, the output stage uses a
break-before-makecircuit.Thebreakintervalofthiscircuit
turns off both the pull-up and pull-down devices for tens
of nanoseconds before activating the appropriate output
transistor ꢀdepends on the output transition directionꢂ.
Any load connected to the output will charge or discharge
internal capacitance during this interval. This can create a
softcornerduringoutputtransitionsandalsodecreasethe
propagationdelay.TheTypicalPerformanceCharacteristics
section shows this behavior under three load conditions:
unloaded, 10k to ground and 200Ω to ground. Loads to
at least 1mA, a 1μF bypass capacitor is recommended.
+
Pulsing the V supply to the comparators on and off may
+
engage the ESD protection circuitry at the V pin. If this
+
occurs,currentispulledfromtheV pinthroughtheoutput
stage. Using the recommended supply bypass capacitors
+
with some series resistance in the V supply line will help
to prevent this action in pulsed supply applications.
Level Translators
The level translators in the Typical Applications section
show an adjustable high-precision voltage reference
enabling the user to vary the threshold voltage. Simply
adjustingtheratioofthetworesistorschangesthethresh-
old voltage according to the following equation:
+
V have a similar affect when the output is transitioning
from low to high.
Power Supplies
ꢀ
F ꢃ
G ꢄ
R
R
The comparator circuitry operates from a single 1.7V
to 5.5V. A 0.1μF minimum bypass capacitor is required
V
THR = 0.4 1+
ꢂ
ꢅ
ꢁ
+
between the V pin and GND. When the output is sinking
TYPICAL APPLICATIONS
Low to High Level Translator
5.5V
LT6650
GND
500mV
OUT
FB
IN
–
5.5V
0V
24.9k
100k
OUT
1/2 LTC6702
2V
0V
0.1μF
1μF
+
6702 TA02
6702f
8
LTC6702
TYPICAL APPLICATIONS
High to Low Level Translator
1.8V
LT6650
IN
500mV
OUT
FB
–
1.8V
0V
24.9k
100k
OUT
1/2 LTC6702
GND
6V
0V
0.1μF
1μF
+
6702 TA03
Micropower Battery Monitor with Fast Response
V
BATT
R1
909k
LTC6702
+
LT1790-1.25
GND
COMPB
OUTB ꢀ0V IF V
< 2.1Vꢂ
BATT
IN
OUT
–
C1
0.1μF
0.1μF
1μF
R2
332k
–
+
OUTA ꢀ0V IF V
< 2.8Vꢂ
COMPA
BATT
R3
1M
6702 TA04
6702f
9
LTC6702
PACKAGE DESCRIPTION
DC Package
8-Lead Plastic DFN (2mm × 2mm)
ꢀReference LTC DWG # 05-08-1719 Rev Øꢂ
0.70 ±0.05
2.55 ±0.05
0.64 ±0.05
1.15 ±0.05
(2 SIDES)
PACKAGE
OUTLINE
0.25 ± 0.05
0.45 BSC
1.37 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
R = 0.115
TYP
5
8
R = 0.05
TYP
0.40 ± 0.10
PIN 1 NOTCH
2.00 ±0.10 0.64 ± 0.10
(4 SIDES)
(2 SIDES)
R = 0.20 OR
0.25 × 45°
CHAMFER
PIN 1 BAR
TOP MARK
(SEE NOTE 6)
(DC8) DFN 0106 REVØ
4
1
0.23 ± 0.05
0.45 BSC
0.75 ±0.05
0.200 REF
1.37 ±0.10
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
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
6702f
10
LTC6702
PACKAGE DESCRIPTION
TS8 Package
8-Lead Plastic TSOT-23
ꢀReference LTC DWG # 05-08-1637ꢂ
2.90 BSC
(NOTE 4)
0.52
MAX
0.65
REF
1.22 REF
1.50 – 1.75
(NOTE 4)
2.80 BSC
1.4 MIN
3.85 MAX 2.62 REF
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.22 – 0.36
8 PLCS (NOTE 3)
0.65 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.95 BSC
0.09 – 0.20
(NOTE 3)
TS8 TSOT-23 0802
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
6702f
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.
11
LTC6702
TYPICAL APPLICATION
Dual Low Side Current Sense Alarm
5.5V
LED B
1k
+
LTC6702
V
LOAD B
–
LT6650
GND
I
LOADB
COMP B
R
FB
SB
500mV
0.17
+
IN
OUT
0.1MF
1MF
24.9k
37.4k
61.9k
LED A
1k
+
COMP A
LOAD A
–
I
GND
LOADA
R
SA
6702 TA05
0.17
LEDA ON IF I
LEDB ON IF I
> 2.5A
> 5.0A
LOADA
LOADB
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1441/LTC1442
Dual Ultralow Power Comparators with
Reference
1.182V 1ꢃ Reference, 8μs Propagation Delay, 5.7μA
1.2V 0.8ꢃ Reference, Amplifier Stable with 1000pF Load
1.182V 1ꢃ Reference, 4μs, 3.5μA, Open-Drain Out
LTC1541/LTC1542
LTC1842/LTC1843
LT6660
Micropower Amplifier with Comparator and
Reference
Dual Ultralow Power Comparators with
Reference
Tiny Micropower Precision Series References
0.2ꢃ Reference, 20ppm/ꢁC Drift, 20mA Output, 2mm × 2mm DFN Package
LT6700-1/LT6700-2/ Dual Comparators with 400mV Reference
LT6700-3
1.4V to 18V Operating Range, 18μs Propagation Delay, SOT-23 Package
LT6703-2/LT6703-3 Tiny Single Comparator with 400mV Reference
1.4V to 18V Operating Range, 18μs Propagation Delay, 2mm × 2mm
DFN Package
6702f
LT 0907 • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
12
●
●
© LINEAR TECHNOLOGY CORPORATION 2007
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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