MT838X
Latch, High Voltage Hall-Effect Switch IC
1 Product Description
The MT838X family is produced by BCD technology with
both high performance and high reliability. The Hall IC
internally includes an on-chip Hall voltage generator, a
voltage regulator for operation with supply voltage of
3.8V to 60V, temperature compensation circuitry, smallsignal amplifier, Hall IC with dynamic offset cancellation
system, Schmitt trigger and an open collector output. It
also includes an clamp diode at output and reversed
power supply protection enhances the robustness of Hall
IC.
The Hall IC designed to respond to alternating north and
south poles. While the magnetic flux density(B) is larger
than operating point (BOP), the output will be turned on
(Low), the output is held until the magnetic flux density(B)
is lower than releasing point (BRP), then turn off (High).
4 Applications
The MT838X family provides a variety of packages to
customers: SOT-23/SOT-89B/SOT-23 (Thin Outline) for
surface mount and flat TO-92 for through-hole mount.
All packages are RoHS compliant.
■
■
■
■
■
2 Features
■ AEC-Q100 Automotive Qualified
MT838XAT & MT838XET
■ BCD Technology
■ Latch Switch
■ 3.8~60V Operating Vcc Range
■ -40℃~150℃ Operating Temperature
■ Package Option:
Flat TO-92
SOT-23
SOT-23 (Thin Outline)
SOT-89B
■ Magnetic Sensitivity Option:
MT8381 (BOP=50Gs, BRP=-50Gs)
MT8282 (BOP=20Gs, BRP=-20Gs)
■ Internal 10K pull-up resistor
■ -20V Reversed Power Supply Protection
■ Output Limiting Current Protection
■ RoHS Compliant: (EU)2015/863
5. Pin Configuration and Functions
2
3
SOT-23
(Thin Outline)
1
2
3
SOT-89B
1
3
2
Flat TO-92
1
3
2
Description
Power
Internal
Pull-up
Resistor
Ground
2
OUT
2
GND
Vcc
OUT
1
按钮
OUT
1
3
按钮
Vcc
3
按钮
GND
TO-92
Top-View
SOT-23, tape & reel
(3000pcs/bag)
SOT-23 (Thin Outline), tape & reel
(3000pcs/bag)
SOT-89B, tape & reel
(1000pcs/bag)
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SOT-89B
Top-View
SOT-23
Thin Outline
Top-View
22
MT838XBT
1
3
3
MT838XET
SOT-23
GND
MT838XAT
GND
Vcc
MT838XA
Flat TO-92, bulk packaging
(1000pcs/bag)
Out
11
Description
VCC
SOT-23
Top-View
3 Product Overview of MT838X
Part No.
Automotive, Home appliances,
Industrial
Speed Detection
Magnetic Encoder
Brushless DC Motor Communication
Figure.1
1
OUT
3
GND
2
Vcc
1
Pin Configuration & Functions
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
Table of Contents
1
Product Description………….……………...…….……...…………………………………….…….………1
2
Features……………………………….……..……………………………………………………………….…….1
3
Product Overview of MT838X ..…………………………………………………………………………1
4
Applications……………………………………………………………………………………………………….1
5
Pin Configuration and Functions…………………………………………………….………………….1
6
Definition of Switching Function……………………………………………………………………….3
7
Functional Description…...…………………………………………………………………………………..3
8
Feature Description……………………………………………………………………………………………3
9
Functional Block Diagram…………………………………………………………………………………..4
10
Electrical and Magnetic Characteristics………………………………………………………………4
10.1 Absolute Maximum Ratings……………………………………………………………………………….4
10.2 Electrical Specifications….………………………………………………………………………………..5
10.3 Magnetic Characteristics………………………………………………………………………….…………5
10.4 ESD Ratings………………………………………………………………………………………………………..5
10.5 Characteristic Performance………………………………………………………………….…………….6
10.6 Typical Output Waveform…………………………………………………………………………………..7
11
Package Material Information……………………………………………………………………………8
11.1 SOT-23 Package Information……………………………...………………………………………………8
11.2 SOT-23 (Thin Outline) Package Information……………………………...………………………9
11.2 SOT-89B Package Information……...…………………………………………………………………10
11.3 Flat TO-92 Package Information……………………………………………………………………….11
12
Copy Rights and Disclaimer……………………………………………………………………………..12
1
2
3
4
Originally Version
1.1 Version
1.2 Version
1.3 Version
5
1.4 Version
6
7
1.5 Version
1.6 Version
Reversion History
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Update MT8382 Series
Remove Typical Application Circuit
Update AEC-Q100 Automotive on MT831XAT
Update RoHS compliant to (EU)2015/863
Update AEC-Q100 Logo
Update Copy Rights and Disclaimer
Update AEC-Q100 Automotive on MT831XET
Update the marking spec of SOT-23 & SOT23 (Thin Outline)
2
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
6 Definition of Switching Function
Figure.2 & Figure.3 shows the device functionality and hysteresis
Vcc
North
Vcc
BRP
Figure.2
BOP
South
North
Switching Function of Flat TO-92 & SOT-89B
BOP
Figure.3
South
BRP
Switching Function of SOT-23
& SOT-23 (Thin Outline)
7 Function Description
BOP: Operating Point, Magnetic flux density applied on the branded side of the package which turns the
output driver ON (VOUT=Low)
BRP: Releasing Point, Magnetic flux density applied on the branded side of the package which turns the
output driver OFF (VOUT=High)
BHYST: Hysteresis Window, |BOP - BRP|
Devices that have a lower magnetic threshold (VOUT=High) detect magnets at a farther distance. Higher
thresholds (VOUT=Low) generally require a closer distance or larger magnet.
8 Feature Description
S
N
N
N
N
S
S
S
SOT-23
Flat TO-92
SOT-89B
Figure.4
Motion
The MT838X device is sensitive to the magnetic field component that is perpendicular to the top of the
package
SOT-23
(Thin Outline)
N
S
S
S
S
N
N
N
SOT-23
Flat TO-92
SOT-89B
PCB
PCB
VOUT = Low
VOUT= High
SOT-23
(Thin Outline)
Flux Direction Polarity
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3
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
9 Functional Block Diagram
Reference
Dynamic
Offset
Cancelation
Regulator
10KΩ
Vcc
Limiting
Current
Protection
Out
ESD
ESD
Hall Plate
ITA
COMP
Output Driver
GND
Figure.5
Functional Block Diagram
10 Electrical and Magnetic Characteristics
10.1 Absolute Maximum Ratings
Absolute maximum ratings are limited values to be applied individually, and beyond which the
serviceability of the circuit may be impaired. Functional operability is not necessarily implied. Exposure to
absolute maximum rating conditions for an extended period of time may affect device reliability.
Symbol
Parameters
Min
Max
Units
VCC
Supply Voltage
-
65
V
VRCC
Reverse Battery Voltage
-20
-
V
VOUT
Output Voltage
-
65
V
IOUT
Continuous Output Current
-
40
mA
TA
Operating Ambient Temperature
-40
150
℃
TS
Storage Temperature
-50
150
℃
TJ
Junction Temperature
-
165
℃
B
Magnetic Flux Density
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No Limit
4
Gs
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
10.2 Electrical Specifications
At TA=-40~150 ℃, VCC=3.8V~60V (unless otherwise specified)
Symbol
Parameters
Test Condition
Min
Typ
Max
Unit
VCC
Supply Voltage
Operating
3.8
-
60
V
ICC
Supply Current
BBOP,
VOUT=Vcc
-
50
-
mA
VDSON
Output Saturation Voltage
IOUT=15mA,
B>BOP
-
-
0.4
V
IOFF
Output Leakage Current
VOUT=60V
-
-
10
uA
TR
Output Rise Time
RL=1KOhm,
CL=20pF
-
-
1.0
us
TF
Output Fall Time
RL=1KOhm,
CL=20pF
-
-
1.0
us
TPO
Power on Time
dVcc/dt>5V/uS
B>BOP(MAX)
-
-
10
us
FC
Chopping Frequency
-
800
-
KHz
FS
Sampling Frequency
-
200
-
KHz
RPU
Internal pull-up Resistor
RTH
10
KOhm
Thermal Resistance of SOT-23
-
301
-
℃/W
Thermal Resistance of SOT-23 (Thin Outline)
-
301
-
℃/W
Thermal Resistance of Flat TO-92
-
230
-
℃/W
Thermal Resistance of SOT-89B
-
230
-
℃/W
10.3 Magnetic Characteristics
At VCC=3.8V~60V (unless otherwise specified)
Part No.
MT8381 Series
MT8382 Series
Symbol
Min
Typ
Max
Unit
BOP, TA =25℃
35
50
65
Gs
BRP, TA =25℃
-65
-50
-35
Gs
BHYST, TA =25℃
70
100
130
Gs
BOP, TA =25℃
10
20
30
Gs
BRP, TA =25℃
-30
-20
-10
Gs
BHYST, TA =25℃
20
40
60
Gs
10.4 ESD Ratings
Symbol
VESD
Reference
Values
Unit
Human-body model (HBM)
AEC-Q100-002
Class II
Grade
Charged-device model (CDM)
AEC-Q100-011
Class C6
Grade
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5
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
10.5 Characteristic Performance
At VCC=5V
Supply Current (mA)
6
5
4
3
2
1
0
-40
25
85
125
150
Temperature ℃
Figure.6
Supply Current vs. Temperature
MT8381
MT8382
30
45
30
15
Bop
0
-15
-40 Brp 25
85
125
150
-30
-45
Magnetic Field Intensity (Gs)
Magnetic Field Intensity (Gs)
60
15
Bop
0
-40 Brp 25
85
125
150
-15
-60
-75
Figure.7
-30
Temperature ℃
Magnetic Characteristics vs. Temperature (BOP & BRP)
MT8381
MT8382
80
Magnetic Field Intensity (Gs)
Magnetic Field Intensity (Gs)
120
100
80
60
40
20
0
70
60
50
40
30
20
10
0
-40
25
85
125
150
-40
Temperature ℃
Figure.8
Temperature ℃
25
85
125
150
Temperature ℃
Magnetic Characteristics vs. Temperature (BHYST)
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6
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
10.6 Typical Output Waveform
MT8381A as example
B
BOP
T
BRP
V
High
Low
Figure.9
T
Digital Output vs. Magnetic Flux Density
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7
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
11 Package Material Information (For Reference Only – Not for Tooling Use)
11.1 SOT-23 Package Information
3
XXXX
按钮
Product ID
按钮
2
1
OUT
Vcc
Figure.10
DateCode:
Y: Year W: Week
YW
GND
XXXX YW
SOT-23 Chip Marking Spec
Sensing
Center
Figure.11
SOT-23 Package Drawing
Symbol
Dimensions in Millimeters
Dimensions in Inches
Min
Max
Min
Max
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
e
0.950 TYP
0.037 TYP
e1
1.800
2.000
0.071
0.079
L
0.300
0.600
0.012
0.024
θ
0︒
8︒
0︒
8︒
x
1.460 TYP
0.057 TYP
y
0.800 TYP
0.032 TYP
z
0.600 TYP
0.024 TYP
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8
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
11.2 SOT-23 (Thin Outline) Package Information
GND
XXXX YW
3
Product ID
22
11
OUT
Vcc
Figure.12
YW
3
XXXX
按钮
DateCode:
Y: Year W: Week
SOT-23 (Thin Outline) Chip Marking Spec
Sensing
Center
Figure.13
SOT-23 (Thin Outline) Package Drawing
Symbol
Dimensions in Millimeters
Dimensions in Inches
Min
Max
Min
Max
A
0.900
1.150
0.035
0.045
A1
0.000
0.100
0.000
0.004
A2
0.900
1.050
0.035
0.041
b
0.300
0.500
0.012
0.020
c
0.080
0.150
0.003
0.006
D
2.800
3.000
0.110
0.118
E
1.200
1.400
0.047
0.055
E1
2.250
2.550
0.089
0.100
e
e1
0.950 TYP
1.800
L
0.037 TYP
2.000
0.071
0.550 REF
0.079
0.022 REF
L1
0.300
0.500
0.012
0.020
θ
0︒
8︒
0︒
8︒
x
1.460 TYP
0.057 TYP
y
0.650 TYP
0.026 TYP
z
0.500 TYP
0.020 TYP
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9
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
11.3 SOT-89B Package Information
XXXX
XXXX
YWW
Product ID
3
2
1
按钮
YWW
OUT
GND
Vcc
DateCode: week (01~55)
DateCode: year (0~9)
Figure.14
SOT-89B Chip Marking Spec
Sensing
Center
Figure.15
SOT-89B Package Drawing
Symbol
Dimensions in Millimeters
Dimensions in Inches
Min
Max
Min
Max
A2
1.220
1.420
0.048
0.056
A1
0.000
0.100
0.000
0.004
b
0.300
0.500
0.012
0.020
c
0.052
0.252
0.002
0.010
D
4.400
4.600
0.173
0.181
b1
1.600
1.800
0.063
0.071
E
2.400
2.600
0.094
0.102
HE
4.000
4.400
0.157
0.173
e
1.400
1.600
0.055
0.063
L
0.350
0.550
0.014
0.022
x
2.250 TYP
0.089 TYP
y
1.250 TYP
0.049 TYP
z
0.300 TYP
0.012 TYP
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10
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
11.4 Flat TO-92 Package Information
XXXX
XXXX
YWW
Product ID
YWW
DateCode: week (01~55)
DateCode: year (0~9)
3 OUT
2 GND
1 Vcc
Figure.16
Flat TO-92 Chip Marking Spec
Sensing
Center
Figure.17
Flat TO-92 Package Drawing
Symbol
Dimensions in Millimeters
Dimensions in Inches
Min
Max
Min
Max
A
1.420
1.620
0.056
0.064
A1
0.660
0.860
0.026
0.034
b
0.350
0.480
0.013
0.019
b1
0.400
0.510
0.016
0.020
c
0.330
0.510
0.013
0.020
D
3.900
4.100
0.154
0.161
D1
2.280
2.680
0.090
0.106
E
3.050
3.250
0.120
0.128
e
1.270 TYP
0.050 TYP
e1
2.440
2.640
0.096
0.104
L
14.350
14.750
0.565
0.581
θ
45︒ TYP
45︒ TYP
x
2.025 TYP
0.080 TYP
y
1.545 TYP
0.061 TYP
z
0.500 TYP
0.020 TYP
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11
Rev
1.6
MT838X
Latch, High Voltage Hall-Effect Switch IC
12 Copy Rights and Disclaimer
1. This document may not be reproduced or duplicated, in any form, in whole or in part without prior
written consent of MagnTek . Copyrights © 2019, MagnTek Incorporated.
2. MagnTek reserves the right to make changes to the information published in this document at
anytime without notice.
3. MagnTek’s products are limited for use in normal commercial applications. MagnTek’s products are
not to be used in any device or system, including but not limited to medical life support equipment and
system.
For the latest version of this document, please visit our website: www.magntek.com.cn
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12
Rev
1.6