UNISONIC TECHNOLOGIES CO., LTD SK1901

UNISONIC TECHNOLOGIES CO., LTD
SK1901
LINEAR INTEGRATED CIRCUIT
HALL-EFFECT SWITCH FOR
HIGH-TEMPERATURE
OPERATION
1

DESCRIPTION
SIP-3
SK1901 is a semiconductor integrated circuit utilizing the Hall
effect. It has been so designed as to operate in the alternating
magnetic field especially at low supply voltage and operation over
extended temperature ranges to +125°С.This Hall IC is suitable for
application to various kinds of sensors, contact-less switches, and
the like.

3
2
FEATURES
1
SOT-23
(EIAJ SC-59)
* Wide supply voltage range of 2.5V to 20V
* Wide temperature operation range of -20°С~+125°С
* TTL and MOS IC are directly drivable by the output
* The life is semipermanent because it employs contact-less parts

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
SK1901G-AE3-R
SK1901L-G03-B
SK1901G-G03-B
SK1901L-G03-K
SK1901G-G03-K
Note: Pin Assignment: I: VCC O: VOUT G: GND

Package
SOT-23
SIP-3
SIP-3
Pin Assignment
1
2
3
O
I
G
I
G
O
I
G
O
Packing
Tape Reel
Tape Box
Bulk
MARKING
SIP-3
SOT-23
1901G
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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QW-R118-005.F
SK1901

LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
REGULATOR
VCC
Output
GND
Hall element
Amplifier
Schmidt trigger
UNISONIC TECHNOLOGIES CO., LTD
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Output stage
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SK1901

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS(TA = 25°С, unless otherwise specified)
PARAMETER
Supply voltage
Supply current
Circuit current
RATINGS
UNIT
2.5V ~ 20V
V
10
mA
20
mA
SIP-3
400
mW
Power dissipation
PD
SOT-23
200
mW
Operating temperature
TOPR
-20 ~ +125
°С
Storage temperature
TSTG
-55 ~ +150
°С
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

SYMBOL
VCC
ICC
IO
MAGNETIC CHARACTERISTICS (over operating supply voltage range.)
PARAMETER
Operate Point
Release Point
Hysteresis
SYMBOL
BOP
BRP
BHYS
UNISONIC TECHNOLOGIES CO., LTD
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CONDITIONS
at TA=+25°С
at TA=+25°С
at TA=+25°С
MIN TYP MAX UNIT
100
G
10
G
90
G
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SK1901

LINEAR INTEGRATED CIRCUIT
PACKAGE INFORMATION
S
1
N
Marked face
2
1. Vcc
2. GND
3. Output
3
1
Marked face
3
1. Vcc
2. Output
3. GND
2
S
N
SIP-3
SOT-23
Vout
Vout
H
H
Bh
Bh
L
Brp
N
0
L
Bop
Brp
S
Magnetic flux density
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S
0
Bop
N
Magnetic flux density
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QW-R118-005.F
SK1901

LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
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SK1901
TYPICAL OPERATING CHARACTERISTICS
Temperature vs. Magnetic field
60
55
50
40
39
39
38
65
65
63
62
61
60
39
40
41
42
22
23
24
24
Voltage vs. Magnetic field
70
63
41
63
Bop
40
Brp
30
20
22
21
17
23
BW
23
Magnetic field ( G )
Magnetic field ( G )
70
10
60
50
40
60
60
45
43
20
61
40
39
37
35
Brp
22
23
26
BW
20
17
15
0
10
25
55
75
95
115 125
3
5
12
Temperature ( °С )
Bop
15
20
27
Voltage ( V )
Temperature vs. Icc
Voltage vs. Icc
3.75
4.50
3.99 3.88
3.76 3.61
3.50
3.00
2.50
3.72
3.70
3.40 3.25
3.09 2.95
2.84
Icc
2.00
1.50
Current ( mA )
4.00
Current ( mA )
61
0
-20
3.65
3.55
3.46
3.45
0.50
3.35
Icc
3.51
3.50
3.40
0.00
3.67
3.63
3.60
3.60
1.00
3.30
-20
0
10
25
55
75
95
115 125
3
5
Temperature ( °С )
12
15
20
Voltage vs. Sink
31
34
33
33
31
33
32
31
31
Sink
30
30
30
31
31
31
32
32
Sink (mA)
33
27
Voltage ( V )
Temperature vs. Sink
33
61
60
30
10
0
Sink (mA)

LINEAR INTEGRATED CIRCUIT
31
31
31
30
30
Sink
30
30
30
29
30
28
30
-20
0
10
25
55
75
95
115 125
Temperature ( °С )
UNISONIC TECHNOLOGIES CO., LTD
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3
5
13
15
21
27
Voltage ( V )
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SK1901

LINEAR INTEGRATED CIRCUIT
TYPICAL OPERATING CHARACTERISTICS (Cont.)
Switch Points
Hysteresis
70
30
60
25
50
20
40
15
30
10
20
5
10
0
0
-20
0
10
25
55
75
95
115
125
-20
0
10
25
55
75
95
115
125
115
125
Ambient Temperature IN ( °С )
Ambient Temperature IN ( °С )
Output Sink Current
Supply Current
34
4.50
4.00
33
3.50
32
3.00
2.50
31
2.00
30
1.50
1.00
29
0.50
28
0.00
-20
0
10
25
55
75
95
115
125
-20
Ambient Temperature IN ( °С )
0
10
25
55
75
95
Ambient Temperature IN ( °С )
Output Sink Current
VIN - ICC
31
3.75
31
3.70
31
3.65
3.60
31
3.55
30
3.50
30
3.45
30
3.40
30
3.35
30
3.30
3
5
13
15
21
27
Voltage ( V )
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3
5
12
15
20
27
Voltage ( V )
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SK1901
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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www.unisonic.com.tw
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