LT6119-1/LT6119-2
25
611912f
For more information www.linear.com/LT6119-1
Typical applicaTions
Electronic Fuse and Undervoltage Detector with Power-On Reset
The electronic fuse can be reset either by pulling the LE
line low or by cycling the power to the system. The circuit
is designed to have a 100µS power-on period. After power,
while LE is still below the threshold, the comparator is kept
transparent to allow for initial inrush current.
The comparators monitor for overcurrent and undervolt
-
age conditions.
If either fault condition is detected the
battery will immediately be disconnected from the load.
The latching comparator outputs ensure the battery stays
disconnected from the load until an outside source resets
the LT6119 comparator outputs.
SENSEHI SENSELO
OUTA
0.1Ω
R10
100Ω
LT6119-1
V
TO
LOAD
V
OUT
9.53k
50k
475Ω
30V
UNDERVOLTAGE
DETECTION
0.8A
OVERCURRENT
DETECTION
INC1
INC2
V
+
LE
OUTC2
8
1
6
7
5
OUTC1
10
9
10k
100k
6.2V*
IRF9640
2
5V
INC2
3
4
611912 TA02
100k
2N7000
*CMH25234B
1M
13.3k
0.1µF
100nF
10µF
40V
LT6119-1/LT6119-2
26
611912f
For more information www.linear.com/LT6119-1
Typical applicaTions
MCU Interfacing with Hardware Interrupts
SENSEHI SENSELO
OUTA
0.1Ω
V
+
100Ω
LT6119-1
V
TO LOAD
V
OUT
ADC IN
2k
6.65k
INC2
1.33k
INC1
V
+
LE
OUTC1
8
1
7
6
5
OUTC2
10
9
10k
2
5V
4
3
LE
611912 TA03
10k
5V
V
OUT
/ADC IN
AtMega1280
PB0
PB1
PCINT2
PCINT3
ADC2
PB5
5
6
7
2
3
1
UNDERCURRENT ROUTINE
RESET COMPARATORS
MCU INTERUPT
OUTC2 GOES LOW
5V
0V
611912 TA03b
Example:
The comparators are set to have a 50mA undercurrent
threshold and a 300mA overcurrent threshold. The MCU
will receive the comparator outputs as hardware interrupts
and immediately run an appropriate fault routine.
Simplified DC Motor Torque Control
The figure shows a simplified DC motor control circuit.
The circuit controls motor current, which is proportional
to motor torque; the LT6119 is used to provide current
feedback to a difference amplifier that controls the current
in the motor. The LTC
®
6992 is used to convert the output
of the difference amp to the motors PWM control signal.
SENSEHI SENSELO
OUTA
LT6119
V
5.62k
100k
2
3
7
LTC6246
F
4
6
1
3
6
IRF640
5V
1N5818
0.1Ω
V
MOTOR
5
4
2
0.47µF
V
OUT
CURRENT SET POINT (0V TO 5V)
3.4k
1k
INC2
1M
611912 TA04
1k
78.7k
100k
280k
INC1
V
+
LE
OUTC1
OUTC2
LE
100µF
+
LTC6992-1
V
+
GND
5V
BRUSHED
DC MOTOR
(0A TO 5A)
MABUCHI
RS-540SH
MOD
SET
OUT
DIV
LT6119-1/LT6119-2
27
611912f
For more information www.linear.com/LT6119-1
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.
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
package DescripTion
MS Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661 Rev E)
MSOP (MS) 0307 REV E
0.53 ± 0.152
(.021 ± .006)
SEATING
PLANE
0.18
(.007)
1.10
(.043)
MAX
0.17 –0.27
(.007 – .011)
TYP
0.86
(.034)
REF
0.50
(.0197)
BSC
1 2
3
4 5
4.90 ± 0.152
(.193 ± .006)
0.497 ± 0.076
(.0196 ± .003)
REF
8910
7
6
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.254
(.010)
0° – 6° TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 ± 0.127
(.035 ± .005)
RECOMMENDED SOLDER PAD LAYOUT
0.305 ± 0.038
(.0120 ± .0015)
TYP
0.50
(.0197)
BSC
0.1016 ± 0.0508
(.004 ± .002)

LT6119IMS-1#PBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Current Sense Amplifiers Current Sense Amp, Comparator with Latch Enable and Reference
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union