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參數(shù)資料
| 型號： | LT6109IMS-2#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/28頁 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE 10MSOP |
| 標準包裝： | 50 |
| 類型： | 放大器，比較器，參考 |
| 應用： | 電流感測，電源管理 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 管件 |
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LT6109-1/LT6109-2
1
610912fa
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
LT6109-2hasthecomparatorsconnectedinthesamepolar-
ity.Inaddition,thecurrentsenseamplifierandcomparator
inputs and 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 overall propagation delay of the LT6109 is typically
only 1.4s, allowing for quick reaction to overcurrent
and undercurrent conditions. The 1MHz bandwidth al-
lows the LT6109 to be used for error detection 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: 125V Maximum
– Low Gain Error: 0.2% Maximum
n
Internal 400mV Precision Reference
n
Internal Latching Comparators with Reset
– Fast Response Time: 500ns
– Total Threshold Error: ±1.25% Maximum
– Two Comparator Polarity Options
n
Wide Supply Range: 2.7V to 60V
n
Supply Current: 550A
n
Low Shutdown Current: 5A Maximum
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
*CMH25234B
V+
EN/RST
OUTC1
OUTC2
V–
0.1
IRF9640
3.3V
6.2V*
12V
100
6.04k
100k
1.62k
10k
1k
0.1F
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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