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PDF MLX91208 Data sheet ( Hoja de datos )
| Número de pieza | MLX91208 | |
| Descripción | IMC-Hall Current Sensor | |
| Fabricantes | Melexis | |
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Hay una vista previa y un enlace de descarga de MLX91208 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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MLX91208
IMC-Hall® Current Sensor (Triaxis® Technology)
Features and Benefits
Programmable high speed current sensor
Triais® Technology
Very high sensitivity due to Integrated
Magnetic Concentrator (IMC-Hall®)
Wideband: DC to 200kHz
Very short response time: 3µs
Programmable linear transfer characteristic
Selectable analog ratiometric output
SO-8 package, RoHS compliant
Lead free component, suitable for lead free
soldering profile 260°C (target), MSL3
Application Examples
Inverter HEV and EV
BLDC motor current monitoring
Smart fuse (over-current detection)
AC/DC Converter
DC/AC Converter (Inverter)
DC/DC switched mode power supply
Ordering Information
Part No.
MLX91208
MLX91208
MLX91208
MLX91208
Temperature Code
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
Package
DC (SOIC)
DC (SOIC)
DC (SOIC)
DC (SOIC)
Option code
Packing Form
CAL-000 (low field) TU/RE (tube/reel)
CAH-000 (high field) TU/RE (tube/reel)
CAV-000 (v. high f.) TU/RE (tube/reel)
CAV-001 (v. high f.) TU/RE (tube/reel)
Sensitivity Range (Default)
100-700mV/mT (250mV/mT)
50-300mV/mT (100mV/mT)
30-200mV/mT (40mV/mT)
30-200mV/mT (60mV/mT)
Ordering example: MLX91208LDC-CAH-000-RE
1 Functional Diagram
Figure 1: Block diagram
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Page 1 of 17
Data Sheet
September 2015
1 page  
MLX91208
IMC-Hall® Current Sensor (Triaxis® Technology)
6 General Electrical Specifications
Operating Parameters: TA = -40°C to 125°C, Vdd = 4.5V to 5.5V, Iout = -2mA to +2mA, recommended
application diagram in section 1, unless otherwise specified. All mentioned component values can have a
±20% tolerance.
Parameter
Nominal Supply Voltage
Supply Current
DC Load Current
Maximum Output Current
(driving capability)
Output Resistance
Output Capacitive Load
Output Resistive Load
Output Short Circuit Current
Output Leakage current
Output Voltage Swing
(Linear Range)
High-impedance mode levels (1)
Under-voltage detection (2)
Over-voltage detection (2)
Ratiometry enable detection (2)
Symbol
Vdd
Idd
Iout
Im ax
Cload
Rload
Ishort
Ileak
Vout_pd
Vout_pu
Vout_HiZ_pu
Vout_HiZ_pd
Vdd_uv d
Vdd_uv h
Vdd_ov d2
Vdd_ov h2
Vratio_d
Vratio_h
Test Conditions
Without output load
In application mode
TA = -40°C to 150°C
Rload in range [6kΩ, 100kΩ]
Inside this range, output voltage
reaches 3%Vdd and 97%Vdd
Vout = 50% Vdd, RL = 10kΩ
Capacitive load range for the stability
of the output amplifier.
Output amplifier optimized for the
typical capacitive load.
Output resistive load for high linearity
(both pull-up and pull-down resistor)
Output shorted to Vdd (Permanent)
Output shorted to Vss (Permanent)
High impedance mode (1)
T = 150°C
pull down ≥ 10 kΩ
pull up ≥ 10 kΩ
pull-up RL ≤ 25 kΩ, T≤125°C
pull-down RL ≤ 25 kΩ, T≤125°C
Low to High Voltage
Hysteresis
Low to High Voltage
Hysteresis
Low to High Voltage
Hysteresis
Min
4.5
7
-2
-2
1
6
35
35
0.5
10
10
95
3
0.25
6.7
0.05
4
0.05
Typ
5
12
1
2
1.5
3.3
0.3
Table 3: General electrical parameter
(1) Refer to chapter Self diagnostic, Table 10.
(2) According to figure on the right:
Vout Hysteresis
Max Units
5.5 V
14 mA
2 mA
2 mA
5
10 nF
k
180 mA
180 mA
20 uA
90 %Vdd
90 %Vdd
%Vdd
5 %Vdd
4V
0.4 V
7.6 V
0.7 V
4.45 V
0.5 V
Detected
Voltage
Vdd
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Data Sheet
September 2015
5 Page 
MLX91208
IMC-Hall® Current Sensor (Triaxis® Technology)
11 Application information
Please refer to our current sensor reference design guide for more application information:
http://melexis.com/Assets/Current-Sensors-Reference-Designs-6187.aspx
11.1 Low current measurement ±2-10A
Low currents can be measured by either using a multi-turn/multi-layer PCB where the current is allowed to
flow several times under the sensor, or by adding a closed ferromagnetic shield around the current trace with
a small air gap to concentrate the magnetic flux above the sensor.
Figure 3: Low current applications with either multi-trace/multi-layer PCB (left) or closed shield (right).
11.2 Medium current measurement up to ±50A
For medium currents, a single PCB trace can be used. The
sizing of the PCB trace should take into account the current
handling capability and the total power dissipation. The PCB
trace should be thick and wide enough to handle the RMS
current continuously.
A simple “U-shaped” ferromagnetic shield is often required to
protect the sensor from cross-talk or external stray fields, if
they cannot be cancelled-out by other means (peak-peak
detection, etc.).
Figure 4: Medium current application on PCB
11.3 High current measurement up to ±1000A
For high currents flowing in a bus bar, MLX91208 is typically
assembled on a PCB lying immediately above the current
conductor.
A ferromagnetic shield is usually added to protect the sensor
from external fields and ensure good homogeneity of the
magnetic flux, for optimal robustness against vibrations and
mechanical tolerances.
Figure 5: High current application on bus bar
3901091208
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Page 11 of 17
Data Sheet
September 2015
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet MLX91208.PDF ] | |
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