UNISONIC TECHNOLOGIES CO., LTD
SK1901
HALL-EFFECT SWITCH FOR
HIGH-TEMPERATURE
OPERATION
DESCRIPTION
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.
LINEAR INTEGRATED CIRCUIT
FEATURES
* 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
SK1901L-AE3-R
SK1901G-AE3-R
SK1901L-G03-B
SK1901G-G03-B
SK1901L-G03-K
SK1901G-G03-K
Note: Pin Assignment: I: V
CC
O: V
OUT
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 INFORMATION
SOT-23
1901
L: Lead Free
G: Halogen Free
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Copyright © 2012 Unisonic Technologies Co., Ltd
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QW-R118-005,D
SK1901
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
REGULATOR
V
CC
Output
GND
Hall element
Amplifier
Schmidt trigger
Output stage
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QW-R118-005,D
SK1901
PARAMETER
Supply voltage
Supply current
Circuit current
SYMBOL
V
CC
I
CC
Io
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°С, unless otherwise specified)
RATINGS
UNIT
2.5V ~ 20V
V
10
mA
20
mA
SIP-3
400
mW
Power dissipation
P
D
SOT-23
200
mW
Operating temperature
T
OPR
-20 ~ +125
°С
Storage temperature
T
STG
-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.
MAGNETIC CHARACTERISTICS
(over operating supply voltage range.)
PARAMETER
Operate Point
Release Point
Hysteresis
SYMBOL
B
OP
B
RP
B
HYS
CONDITIONS
at T
A
=+25°С
at T
A
=+25°С
at T
A
=+25°С
MIN TYP MAX UNIT
100
G
10
G
90
G
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QW-R118-005,D
SK1901
PACKAGE INFORMATION
LINEAR INTEGRATED CIRCUIT
S
Marked face
3
1. Vcc
2. GND
3. Output
N
Marked face
1. Vcc
2. Output
3. GND
1
2
1
3
S
2
N
SIP-3
Vout
H
H
SOT-23
Vout
Bh
L
Brp
N
0
Magnetic flux density
Bop
S
S
0
Brp
Bh
L
Bop
N
Magnetic flux density
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www.unisonic.com.tw
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QW-R118-005,D
SK1901
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
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QW-R118-005,D