|
|
PDF LT6119-1 Data sheet ( Hoja de datos )
| Número de pieza | LT6119-1 | |
| Descripción | Current Sense Amplifier / Reference and Comparators | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LT6119-1 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
|
No Preview Available !
LT6119-1/LT6119-2
Features
Current Sense Amplifier,
Reference and Comparators
with POR
Description
n Current Sense Amplifier
– Fast Step Response: 500ns
– Low Offset Voltage: 200µV Maximum
– Low Gain Error: 0.2% Maximum
n Internal 400mV Precision Reference
n Internal Latching Comparators
– Power-On Reset Capability
– 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: 550µA
n Specified for –40°C to 125°C Temperature Range
n Available in 10-Lead MSOP Package
Applications
n Overcurrent, Undercurrent and Fault Detection
n Current Shunt Measurement
n Battery Monitoring
n Motor Control
n Automotive Monitoring and Control
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.
The LT®6119 is a complete high side current sense device
that incorporates a precision current sense amplifier, an
integrated voltage reference and two latching comparators.
Two versions of the LT6119 are available. The LT6119-1
has the comparators connected in opposing polarity and
the LT6119-2 has the comparators connected in the same
polarity. The comparator latch functionality can be enabled
or disabled and the comparators can be configured to reset
upon power-on. The input and the open-drain outputs of
the comparators are independent from the current sense
amplifier. The comparator trip points and amplifier gain
are configured with external resistors.
The overall propagation delay of the LT6119 is typically
only 1.4µs, allowing for quick reaction to overcurrent and
undercurrent conditions. The 1MHz bandwidth allows the
LT6119 to be used for error detection in critical applica-
tions such as motor control. The high threshold accuracy
of the comparators, combined with the ability to latch
both comparators, ensures the LT6119 can capture high
speed events.
The LT6119 is fully specified for operation from –40°C
to 125°C, making it suitable for industrial and automo-
tive applications. The LT6119 is available in a small
10-lead MSOP.
Typical Application
Fast Acting Fault Protection with Power-On Reset and Early Warning
Response to Overcurrent Event
12V
6.2V*
1k
10k
1k
2N2700
0.1Ω
3.3V
24.9k
1.62k 100k
100nF
100Ω
SENSEHI SENSELO
V+ OUTA
LE LT6119-2
INC2
100mA WARNING
250mA DISCONNECT
OUTC2
OUTC1 V–
INC1
IRF9640
TO LOAD
0.1µF
VOUT
6.04k
2.37k
1.6k
VLOAD
10V/DIV
0V
ILOAD
200mA/DIV
0mA
VOUTC1
5V/DIV 0V
VOUTC2
5V/DIV 0V
250mA DISCONNECT
100mA WARNING
*CMH25234B
611912 TA01a
For more information www.linear.com/LT6119-1
5µs/DIV
611912 TA01b
611912f
1
1 page  
LT6119-1/LT6119-2
Typical Performance Characteristics
V+
=
12V,
VPULLUP
=
V+,
VLE
=
2.7V,
RIN
=
100Ω,
ROUT
=
R1
+
R2
+
R3
=
10k,
gain
Performance characteristics taken
= 100, RC = 25.5k, CL = CLC = 2pF,
uantlTeAss=o2t5h°eCrw, ise
noted. (See Figure 3)
Supply Current vs Supply Voltage
700
Start-Up Supply Current
600
V+
500 5V/DIV
0V
400
300
IS
200 500µA/DIV
100
0
0
10 20 30 40 50 60
SUPPLY VOLTAGE (V)
611912 G01
0µA
10µs/DIV
611912 G02
Input Offset Voltage
vs Temperature
300
5 TYPICAL UNITS
200
100
0
–100
–200
–300
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
611912 G03
Amplifier Offset Voltage
vs Supply Voltage
100 5 TYPICAL UNITS
80
60
40
20
0
–20
–40
–60
–80
–100
0
10 20 30 40
SUPPLY VOLTAGE (V)
50 60
611912 G04
Offset Voltage Drift Distribution
12
10
8
6
4
2
0
–2 –1.5 –1 –0.5 0 0.5 1 1.5 2
OFFSET VOLTAGE DRIFT (µV/°C)
611912 G05
Amplifier Gain Error
vs Temperature
0.05 VSENSE = 5mV TO 100mV
0
–0.05
–0.10
RIN = 1k
RIN = 100Ω
–0.15
–0.20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
611912 G06
Amplifier Gain Error Distribution
25 VSENSE = 5mV TO 100mV
20
15
10
5
0
–0.048 –0.052 –0.056 –0.060 –0.064 –0.68
GAIN ERROR (%)
611912 G07
Amplifier Output Swing
vs Temperature
0.50
0.45
0.40 V+ = 12V
0.35 VSENSE = 120mV
0.30
0.25
0.20
0.15 V+ = 2.7V
0.10 VSENSE = 27mV
0.05
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
611912 G08
For more information www.linear.com/LT6119-1
611912f
5
5 Page 
Block DiagramS
LT6119-2
9
V+
10 SENSEHI
SENSELO
1
3k
3k
2 LE
V– V+
100nA
–
+
V–
3 OUTC2
OVERCURRENT FLAG
34V
V+
LT6119-1/LT6119-2
100Ω
6V
OUTA 8
V–
INC2 7
4 OUTC1
OVERCURRENT FLAG
V–
V+
400mV
REFERENCE
INC1 6
V–
5
611912 F02
Figure 2. LT6119-2 Block Diagram (Comparators with the Same Polarity)
For more information www.linear.com/LT6119-1
611912f
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LT6119-1.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LT6119-1 | Current Sense Amplifier / Reference and Comparators | Linear Technology |
| LT6119-2 | Current Sense Amplifier / Reference and Comparators | Linear Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |