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參數資料
| 型號： | LT6109IMS-2#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO10 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件頁數： | 1/28頁 |
| 文件大小： | 370K |
| 代理商： | LT6109IMS-2#TRPBF |
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LT6109-1/LT6109-2
1
610912f
TYPICAL APPLICATION
FEATURES
DESCRIPTION
High Side Current Sense
Amplifier with Reference
and Comparators
The LT6109 is a complete high side current sense device
that incorporates a precision current sense amplifier, an
integrated voltage reference and two comparators. Two
versions of the LT6109 are available. The LT6109-1 has
the comparators connected in opposing polarity and the
LT6109-2 has the comparators connected in the same
polarity. In addition, the current sense amplifier and
comparator outputs are directly accessible. The amplifier
gain and comparator trip points are configured by external
resistors. The open-drain comparator outputs allows for
easy interface to other system components.
The combined system propagation delay of the LT6109
is typically only 1.4s, allowing for quick reaction to
overcurrent and undercurrent conditions. The 1MHz
bandwidth allows the LT6109 to be used for error detec-
tion in critical applications such as motor control. The
high threshold accuracy of the comparators, combined
with the ability to latch both comparators, ensures the
LT6109 can capture high speed events.
The LT6109 is fully specified for operation from –40°C to
125°C,makingitsuitableforindustrialandautomotiveap-
plications.TheLT6109isavailableinasmall10-leadMSOP.
Circuit Fault Protection with Latching Load Disconnect and Early Warning Indication
APPLICATIONS
n
Current Sense Amplifier
– Fast Step Response: 500ns
– Low Offset Voltage: 350V Maximum
– Low Input Bias Current: 300nA Maximum
n
Internal 400mV Precision Reference
n
Internal Latching Comparators with Reset
– Fast Response Time: 700ns
– Total Threshold Error: ±2% Maximum
– Two Comparator Polarity Options
n
Wide Supply Range: 2.7V to 60V
n
Supply Current: 550A
n
Low Shutdown Current: 5A
n
Specified for –40°C to 125°C Temperature Range
n
Available in 10-Lead MSOP Package
n
Overcurrent, Undercurrent and Fault Detection
n
Current Shunt Measurement
n
Battery Monitoring
n
Motor Control
n
Automotive Monitoring and Control
n
Remote Sensing
n
Industrial Control
L
, LT, LTC, LTM, TimerBlox, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
Response to Overcurrent Event
SENSEHI SENSELO
OUTA
LT6109-2
INC2
RESET
INC1
2N2700
100mA WARNING
250mA DISCONNECT
V+
EN/RST
OUTC1
OUTC2
V–
0.1
IRF9640
3.3V
6.2V
12V
100
6.04k
100k
1.62k
10k
1k
10F
VOUT
2.37k
1.6k
610912 TA01a
TO LOAD
5s/DIV
VLOAD
10V/DIV
VOUTC1
5V/DIV
ILOAD
200mA/DIV
0V
VOUTC2
5V/DIV 0V
0mA
610912 TA01b
250mA DISCONNECT
100mA WARNING
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