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ATS137
SINGLE HALL EFFECT SWITCH
Features
* * * * * * * * * 3.5V to 20V DC Operation Voltage Temperature Compensation Wide Operating Voltage Range Open-Collector Pre-Driver 25mA Maximum Sinking Output Current Reverse Polarity Protection Lead Free Package: SIP-3L and SC59-3L (Commonly known as SOT23 in Asia) SIP-3L and SC59-3L: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish / RoHS Compliant (Note 1)
General Description
ATS137 is a switched Hall-Effect IC, which is for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. The bandgap regulator allows a wide operating voltage range. ATS137 is rated for operating temperature range from -20C to 85C and voltage range from 3.5V to 20V.
Applications
* * * * * VCD/DVD Loader, CD/DVD ROM Cover Detector Speed Measurement Home Appliances Home Safety
Typical Application Circuit
3.5V ~20V
Vcc DO
RL
ATS137
GND
Digital Output
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ATS137
SINGLE HALL EFFECT SWITCH
Ordering Information
ATS 137 - X X - X - X
Package P : SIP-3L W : SC59-3L
Lead Free L : Lead Free G : Green
Packing A : Ammo Box (Note 3) B : Bulk (Note 4) 7 : Tape & Reel
7" Tape and Reel
Quantity NA NA NA NA NA NA NA NA 3000/Tape & Reel 3000/Tape & Reel Part Number Suffix NA NA NA NA NA NA NA NA -7 -7
Magnetic Characteristics A or B (Note 5)
Bulk
Device ATS137-PL-A-A ATS137-PL-A-B ATS137-PL-B-A ATS137-PL-B-B ATS137-PG-A-A ATS137-PG-A-B ATS137-PG-B-A ATS137-PG-B-B ATS137-WL-7-A ATS137-WG-7-A
Notes:
Ammo Box
Quantity 4000/Box 4000/Box NA NA 4000/Box 4000/Box NA NA NA NA Magnetic Part Number Characteristics (Note 5) Suffix -A A -A NA NA -A -A NA NA NA NA B A B A B A B A A
Package Packaging Code (Note 2) Quantity P P P P P P P P W W SIP-3L SIP-3L SIP-3L SIP-3L SIP-3L SIP-3L SIP-3L SIP-3L SC59-3L SC59-3L NA NA 1000 1000 NA NA 1000 1000 NA NA
Part Number Suffix NA NA -B -B NA NA -B -B NA NA
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 3. Ammo Box is for SIP-3L Spread Lead. 4. Bulk is for SIP-3L Straight Lead. 5. Please refer the Magnetic Characteristics table, B is available in SIP-3L package only.
Pin Assignment
(1) SIP-3L (2) SC59-3L
( Top View )
( Top View )
3. DO 2. GND 1. Vcc
3. DO GND 2. 1. Vcc
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SINGLE HALL EFFECT SWITCH
Pin Descriptions
Pin Name Vcc GND DO Pin # 1 2 3 Description Positive Power Supply Ground Digital Output
Functional Block Diagrams
VCC
1
Regulator Hall Plate Amp
3 DO
2 GND
Absolute Maximum Ratings
Symbol VCC VRCC B Vce IC TST TJ(MAX) PD
(TA = 25oC)
Characteristics Supply Voltage Reverse VCC Polarity Voltage Magnetic Flux Density Output "OFF" Voltage Output "ON" Current Storage Temperature Maximum Junction Temperature Package Power Dissipation
Values 20 -20 Unlimited 30 25 -65~+150 150 550 230
Unit V V V mA C C mW mW
Continuous
SIP-3L SC59-3L
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SINGLE HALL EFFECT SWITCH
Recommended Operating Conditions
Symbol VCC TA Characteristic Supply Voltage Operating Ambient Temperature Conditions Operating Operating Min 3.5 -20 Max 20 85 Unit V C
Electrical Characteristics
Symbol Vce(SAT) Icex ICC tr tf Characteristic Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time
(TA = + 25C)
Test Conditions VCC = 14V, ICC = 20mA Vce = 14V, VCC = 14V VCC =20V, Output Open VCC = 14V, RL = 820, CL = 20pF VCC = 14V, RL = 820, CL = 20pF
Min -
Typ. 300 <0.1 5 0.3 0.3
Max 700 10 10 1.5 1.5
Unit mV uA mA us us
Test Circuit
14V
DO RL RL = 820 Ohm CL = 20 pF CL
Test Circuit
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SINGLE HALL EFFECT SWITCH
Magnetic Characteristics
(TA = 25oC, Note 7)
(1mT = 10 Gauss) A grade Symbol Bops(south pole to brand side) Brps(south pole to brand side) Bhy( Bopx - Brpx ) Parameter Operation Point Release Point Hysteresis Min 10 Typ. 80 Max 100 Unit Gauss Gauss Gauss
B grade (for SIP-3L only) Symbol Bops(south pole to brand side) Brps(south pole to brand side) Bhy( Bopx - Brpx )
Notes:
Parameter Operation Point Release Point
Min 10
Typ. -
Max 130 -
Unit Gauss Gauss
Hysteresis
-
80
-
Gauss
7. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
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SINGLE HALL EFFECT SWITCH
Application Information
Operating principle: ATS137 is a three-pin Hall Effect switch IC which can turn magnetic flux variety to digital output signal. In other words, it is an interface from magnetic system to an electrical one by Hall effect. The illustrations are shown in Fig.1.
VO VCC Bhys Turn Off Vce(SAT) Turn On Magnetic Flux (Gauss) Magnet
S Marking Side
Brp
B op
Electrical
Fig.1 Hall-Effect Switch
Output driver is open-collector topology and maximum sink current (Isink) is 25mA. The illustrated circuit is shown as Fig. 2.
3.5 V ~20V
VCC
RL
ATS137 GND
DO
Isink
Vo Digital Output
Fig.2 Application Circuit
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SINGLE HALL EFFECT SWITCH
Application Information
(Continued)
Vo will turn on (low) if the S magnetic flux larger than the operation point (Bop), and turns off whenever the magnetic flux is removed and lower than the release point (Brp). The related waveforms are shown in Fig.3.
Magnetic Flux (mT)
Bop S S
Marking Side
Brp t
VO
Marking Side
N ( SC59 )
N (SIP3)
VCC Vce(SAT) t
Fig.3 VO and Magnetic Flux Variety
The major applications are for contactless switching and shown as follows: * VCD/DVD loader, CD/DVD ROM: Detect if the tray is opened or closed. * Cover detector (open/close): Cellular phone cover detector, refrigerator door detector, microwave oven door sensor, etc. * Home safety: instead of reed relay to detect the situation of door/window. * Due to contactless and without mechanical contact point, its reliability and life cycle are much longer than reed relay. In addition, its switching speed is much faster than mechanical devices.
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Performance Characteristics
(1) SIP-3L TA (C) PD (mW) TA (C) PD (mW) 25 550 105 198 50 440 110 176 60 396 115 154 70 352 120 132 80 308 125 110 85 286 130 88 90 264 135 66 95 242 140 44 100 220 150 0
PD (mW)
6 00 5 00 4 00 3 00 2 00 1 00 0 0 -40 25
Power Dissipation Curve
50
75
85
100
1 25
15 0
TA ( C)
o
(2) SC59-3L (commonly known as SOT23 in Asia) TA (C) 25 50 60 70 80 85 90 100 110 120 125 130 140 150
PD (mW)
230
184
166
147
129
120
110
92
74
55
46
37
18
0
P D (m W )
300
P o w e r D is s i p a tio n C u rv e
200
100
0 0 -4 0 25 50 75 85 100 12 5 150
o
TA ( C)
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SINGLE HALL EFFECT SWITCH
Marking Information
(1) SIP-3L
( Top View )
Part Number
137
Y WW X
Y : Year : 0~9 WW : Week : 01~52, "52" represents 52 and 53 week X : Internal Code : A~Z : Green a~z : Lead Free
(2) SC59-3L (Commonly known as SOT23 in Asia)
( Top View )
XX Y W X
XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green a~z : Lead Free
Identification Code JA
Part Number ATS137
Package SC59-3L
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SINGLE HALL EFFECT SWITCH
Package Information
(All Dimensions in mm)
(1) Package Type: SIP-3L for Bulk pack
0.51mm NOM 2.00 +/0.10mm
1.15 +/0.10mm
BRANDED SURFACE
1
2
3
Active Area Depth
Package Dimension
Sensor Location
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SINGLE HALL EFFECT SWITCH
Package Information
(Continued)
(2) Package Type: SIP-3L for Ammo pack
(3) SC59-3L (Commonly known as SOT23 in Asia)
0.35/0.50
TOP VIEW
1.50/ 1.70
2.70/ 3.00
1.90 2.90/3.10 1.00/ 1.30 0.10/0.20
0.013/0.10 0.95 0.35/0.55
0 O /8 O
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SINGLE HALL EFFECT SWITCH
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