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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:VCC O:VOUT
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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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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SK1901
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL VCC ICC Io
RATINGS UNIT Supply voltage 2.5V ~ 20V V Supply current 10 mA Circuit current 20 mA SIP-3 400 mW Power dissipation PD SOT-23 200 mW Operating ambient temperature TOPR -20 ~ +125 Storage temperature TSTG -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 BOP at Ta=+25 BRP BHYS at Ta=+25 MIN TYP MAX UNIT 100 G 10 G 90 G
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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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SK1901
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
Vcc
5V
Vcc
SK1901 OUTPUT GND
P
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TYPICAL OPERATING CHARACTERISTICS
Temperature vs . Magnetic field
LINEAR INTEGRATED CIRCUIT
Voltage vs. Magnetic field
70
Magnetic field ( G )
50 40 30 20 10 0
55 38
Magnetic field ( G )
60
60
61
62
63
65
65
70 63 63 Bop Brp BW 60 50 40 30 20 10 0 15 17 20 22 23 60 45 60 43 60 61 61 61 Bop 37 35 26 Brp BW
39 21
39 22
39 22
40 23
41 24
42 24
41 23
40 23
40
39
17
-20
0
10
25
55
75
95
115 125
3
5
12
15
20
27
Temperature ( C )
Voltage ( V )
Temperature vs . Icc
Voltage vs. Icc
4.50 4.00
Current ( mA )
3.75 3.99 3.88 3.76 3.61 3.70 3.25 3.09 2.95 2.84 Icc
Current ( mA )
3.72 3.63 3.67
3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00
3.40
3.65 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3.46 3.51 3.60
Icc
-20
0
10
25
55
75
95
115 125
3
5
12
15
20
27
Temperature ( C )
Voltage ( V )
Temperature vs . Sink 34 33
Sink (mA)
Voltage vs. Sink 31
33
33
33
33
Sink (mA)
31 32 31 32 31 30 30 Sink 31 30 30 30 30 30 30 30 31
31
31
31
32 31 30 29 28 -20 0 10 25 55
Sink
75
95
115 125
3
5
13
15
21
27
Temperature ( C )
Voltage ( V )
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Switch Points 70
Switch Point IN Gauss Hysteresis IN Gauss
LINEAR INTEGRATED CIRCUIT
TYPICAL OPERATING CHARACTERISTICS (Cont.)
Hysteresis 30 25 20 15 10 5 0
60 50 40 30 20 10 0 -20 0 10 25 55 75 95 115 125
-20
0
10
25
55
75
95
115
125
Ambient Temperature IN
Ambient Temperature IN
Output Sink Current 34 33 32 31 30 29 28 -20 0 10 25 55 75 95 115 125
Supply Current IN mA Sink Current IN mA
Supply Current 4.50 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 -20 0 10 25 55 75 95 115 125
Ambient Temperature IN
Ambient Temperature IN
Output Sink Current
Vin - Icc
31
Input Current ( mA )
3.75 3.70 3.65 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3 5 13 15 21 27 3 5 12 15 20 27
31
Current ( mA )
31 31 30 30 30 30 30
Voltage ( V )
Voltage ( V )
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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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