UNISONIC TECHNOLOGIES CO., LTD
SK1901
HALL-EFFECT SWITCH FOR
HIGH-TEMPERATURE
OPERATION
1
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
℃
.This Hall IC is suitable for application
to various kinds of sensors, contact-less switches, and the like.
LINEAR INTEGRATED CIRCUIT
SIP-3
3
FEATURES
* Wide supply voltage range of 2.5V to 20V
*Wide temperature operation range of -20
℃
~+125
℃
*TTL and MOS IC are directly drivable by the output
*The life is semipermanent because it employs contact-less parts
*SIP-3 package
2
1
SOT-23
*Pb-free plating product number: SK1901L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
SK1901-AE3-4-R
SK1901L-AE3-4-R
SK1901-G03-D-K
SK1901L-G03-D-K
Package
SOT-23
SIP-3
Pin Assignment
1
2
3
O
I
G
I
G
O
Packing
Tape Reel
Bulk
Note: Pin Assignment: I:V
CC
O:V
OUT
SK1901L-AE3-4-R
G:GND
(1) K: Bulk, R: Tape Reel
(2) refer to Pin Assignment
(3) AE3: SOT-23, G03: SIP-3
(4) L: Lead Free Plating, Blank: Pb/Sn
(1)Packing Type
(2)Pin Assignment
(3)Package Type
(4)Lead Plating
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QW-R118-005,A
SK1901
MARKING INFORMATION
LINEAR INTEGRATED CIRCUIT
SIP-3
1901
L: Lead Free Plating Blank: Pb/Sn
,
Date Code
SOT-23
1901
L: Lead Free Plating, Blank: Pb/Sn
BLOCK DIAGRAM
REGULATOR
Vcc
Output
GND
Hall element
Amplifier
Schmidt trigger
Output stage
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QW-R118-005,A
SK1901
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
V
CC
I
CC
Io
RATINGS
UNIT
Supply voltage
2.5V ~ 20V
V
Supply current
10
mA
Circuit current
20
mA
SIP-3
400
mW
Power dissipation
P
D
SOT-23
200
mW
Operating ambient temperature
T
OPR
-20 ~ +125
℃
Storage temperature
T
STG
-55 ~ +150
℃
Note 1. 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.
2. The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature range
and assured by design from -20℃~+125℃.
MAGNETIC CHARACTERISTICS
(over operating supply voltage range.)
PARAMETER
Operate Point
Release Point
Hysteresis
SYMBOL
CONDITIONS
at Ta=+25℃
B
OP
at Ta=+25℃
B
RP
B
HYS
at Ta=+25℃
MIN TYP MAX UNIT
100
G
10
G
90
G
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QW-R118-005,A
SK1901
PACKAGE INFORMATION
LINEAR INTEGRATED CIRCUIT
SIP-3
4.1 mm
0.73 mm
SOT-23
0.385 mm
0.83 mm
1.58 mm
3.0 mm
0.83 mm
1.00 mm
0.89 mm
0.89 mm
S
1
2
3
Marked face
1. Vcc
2. GND
3. Output
N
Marked face
1. Vcc
2. Output
3. GND
1
3
2
N
SIP-3
Vout
H
Bh
L
Brp
N
Bop
S
S
H
S
SOT-23
Vout
Bh
L
Brp
Bop
N
0
Magnetic flux density
0
Magnetic flux density
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QW-R118-005,A
SK1901
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
Vcc
5V
Vcc
SK1901
OUTPUT
GND
μP
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QW-R118-005,A
