AH9246

AH9246
ULTRA HIGH SENSITIVITY
MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Description
Pin Assignments
NEW PRODUCT
The AH9246 is an ultra high sensitivity Hall-effect switch with internal
pull-up resistor on the output, designed for battery operated handheld
equipments to industrial applications.
(Front View)
A chopper stabilized architecture improves stability of magnetic switch
points over the whole operating range. A sleep-awake logic controls
the sleep and awake time to reduce the average operating current of
the device. During the awake time, the output is changed with the
magnetic flux density. During the sleep time, the output is latched in
its previous state and the current consumption reduces to 4µA typical
at 3V. The average current consumption is 8µA at 3V.
3
OUTPUT
2
GND
1
VDD
TO92S
The output can be switched on with either north or south pole of
sufficient strength. If the magnetic flux density perpendicular to the
part marking surface is larger than operating point (BOP), the output
will be turned on; if it is less than releasing point (B RP), the output will
be turned off.
(Top View)
GND
The AH9246 is available in industry standard TO92S and SC59
packages.
3
Features












Omnipolar Operation (Switching with North or South Poles)
Micropower Operation
Built in Pull-up Resistor on the Output
2.5V to 5.5V Power Supply
Stabilized Chopper
Superior Temperature Stability
Digital Output Signal
-40°C to +85°C Operating Temperature
ESD (HBM): 5000V
Small Low Profile Industry Standard SC59 and TO92S Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1
2
VDD
OUTPUT
SC59
Applications



Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Magnet Switch in Low Duty Cycle Applications
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Typical Applications Circuit
1
VDD
OUTPUT
AH9246
100pF
10nF
NEW PRODUCT
GND
-
2
2.5V to 5.5V
3
Pin Descriptions
Pin Number
Pin Name
Function
TO92S
SC59
1
1
VDD
2
3
GND
Ground pin
3
2
OUTPUT
Output pin
Power supply pin
Functional Block Diagram
VDD
1(1)
Sleep/Awake
Control
Timing
Logic
Bias
100k
Hall
Plate
+
3(2)
OUTPUT
Chopper
Comparator
2(3)
GND
A (B)
A for TO92S
B for SC59
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
NEW PRODUCT
Symbol
Notes:
Parameter
Rating
Unit
VDD
Supply Voltage (Note 5)
7
V
IDD
Supply Current (Fault)
6
mA
VOUT
Output Voltage
7
V
IOUT
Output Current
2
mA
Unlimited
Gauss
B
Magnetic Flux Density
PD
Power Dissipation
TO92S
230
SC59
230
mW
TSTG
Storage Temperature
-55 to +150
C
TJ
Junction Temperature
+150
C
–
ESD (Human Body Model) (Note 6)
5000
V
–
ESD (Machine Model) (Note 6)
400
V
4. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
5. The absolute maximum VDD of 7V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to operate the
device at the absolute maximum rated conditions for any period of time.
6. Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures
whenever handling semiconductor products.
Recommended Operating Conditions
Symbol
VDD
TA
Min
Max
Supply Voltage
Characteristic
Operating
2.5
5.5
V
Operating Temperature Range
Operating
-40
+85
°C
Electrical Characteristics
Symbol
Conditions
Unit
(Note 7) (@TA = +25°C, VDD = 3V, unless otherwise specified.)
Min
Typ
Max
Unit
2.5
3
5.5
V
TA = -40 to +85C, VDD = 2.5V to 5.5V
–
1.8
3
mA
Supply Current During “Sleep” Period
TA = -40 to +85C, VDD = 2.5V to 5.5V
–
4
10
µA
IDD_AVG
Average Supply Current
TA = -40 to +85C, VDD = 2.5V to 5.5V
–
8
15
µA
IOUT
IOFF
Output Current
Output Leakage Current
–
VOUT = 5.5V, Output off
–
–
–
<0.1
1.0
1
mA
µA
VOL
Output Low Voltage (On)
IOUT = 1.0mA
–
–
0.4
V
VOH
Output High Voltage (Off)
IOUT = -1.0mA
VDD-0.2
VDD-0.1
–
V
tAW
tSL
D
fC
Awake Mode Time
Sleep Mode Time
Duty Cycle
Chopper Frequency
Operating
Operating
–
–
–
–
–
–
150
100
0.15
15
–
–
–
–
µs
ms
%
kHz
VDD
IDD_AW
IDD_SL
Note:
Characteristic
Conditions
Supply Voltage
Supply Current During “Awake”
Period
Operating
7. Parameters values over operating temperature range are not tested in production, they are guaranteed by design, process control and characterization.
The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Electrical Characteristics (Cont.) (@TA = +25°C, VDD = 3V, unless otherwise specified.)
tPERIOD
tAWAKE
IDD_AW
Sample and Output
Latched
IDD_AVG
IDD_SL
0
Magnetic Characteristics (Notes 8 & 9) (@TA = -40°C to +85°C, VDD = 3V, unless otherwise specified.)
(1mT=10 Gauss)
Symbol
Parameter
BOPS (South Pole to Part Marking Side)
Conditions
Min
Typ
Max
Unit
B>BOPS,VOUT=Low (output on)
9
18
27
Gauss
B>BOPN,VOUT=Low (output on)
-27
-18
-9
Gauss
B<BRPS,VOUT=High (output off)
4
12
22
Gauss
B<BRPN,VOUT=High (output off)
-22
-12
-4
Gauss
–
6
–
Gauss
Operating Point
BOPN (North Pole to Part Marking Side)
BRPS (South Pole to Part Marking Side)
Releasing Point
BRPN (North Pole to Part Marking Side)
BHYS ( ︱BOPX - BRPX︱)
Notes:
Hysteresis
(Note 9)
8. Parameters values over operating temperature range are not tested in production, they are guaranteed by design, process control and characterization.
The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
9. Maximum and minimum hysteresis is guaranteed by design and characterization.
BOPX=operating point (output turns on); BRPX=releasing point (output turns off)
Operating Characteristics
Output Off
High
BOPN
BOPS
Output Voltage
NEW PRODUCT
tSLEEP
BRPN
BRPS
Low
-B
0
Output On
+B
Magnetic Flux Density (Gauss)
Output Voltage vs. Magnetic Flux Density
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Performance Characteristics
BOP/BRP vs. Ambient Temperature
BOP/BRP vs. Supply Voltage
40
40
30
20
BOP/BRP (GS)
BOP/BRP (GS)
0
BOPS
-20
10
0
-10
-20
BRPS
-30
BRPN
-40
2.5
3.0
3.5
4.0
4.5
5.0
BOPS
BRPS
BOPN
-40
-50
5.5
BOPN
BRPN
-25
0
25
50
75
100
O
TA ( C)
VDD (V)
Average Supply Current vs. Supply Voltage
Awake Mode Time vs. Supply Voltage
300
3
250
200
tAWAKE (s)
IAWAKE (mA)
2
150
100
1
50
0
2.5
3.0
3.5
4.0
4.5
5.0
0
2.5
5.5
3.0
3.5
4.0
4.5
5.0
5.5
VDD (V)
VDD (V)
Sleep Mode Time vs. Supply Voltage
200
150
tASLEEP (ms)
NEW PRODUCT
20
100
50
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VDD (V)
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Thermal Performance
Power Dissipation De-rating Curve
(1)
Package Types: SC59 and TO92S
TA (C)
PD (mW)
-40
230
0
230
25
230
50
184
60
166
70
147
80
129
85
120
90
110
100
92
110
74
120
55
130
37
140
18
150
0
Power Dissipation Curve
PD (mW)
NEW PRODUCT
300
200
100
0
0
-40
25
50
75
85
100
125
150
TA (oC)
Ordering Information
AH9246 - X - X
Product Name
Package
P : TO92S
W : SC59
Packing
B : Bulk
7 : 7" Tape & Reel
Device
Package
Code
Packaging
Bulk
Quantity
7” Tape and Reel
Quantity
AH9246-P-B
AH9246-W-7
P
W
TO92S
SC59
1000/Bulk
NA
NA
3000/Tape & Reel
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Marking Information
(1)
Package Type: TO92S
(Front View)
Part Number
Y : Year : 0~ 9
WW : Week : 01 ~ 52 , "52 " represents
52 and 53 week
X : Internal Code
9246
NEW PRODUCT
Y WW X
(2)
Part Number
Package
Identification Code
AH9246
TO92S
9246
Package Type: SC59
( Top View )
XX Y W X
Part Number
AH9246
AH9246
Document number: DS38097 Rev.2 - 2
XX : Identification Code
Y : Year 0 to 9
W : Week : A to Z : 1 to 26 week;
a to z : 27 to 52 week; z represents
52 and 53 week
X : Internal Code
Package
SC59
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Identification Code
H8
September 2015
© Diodes Incorporated
AH9246
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(1)
Package Type: TO92S(TYPE B)
A
c
E
b2
A2
b
e
D
0
L1
Dim
A
A2
b
b2
c
D
E
e
L
L1
θ
TO92S (TYPE B)
Min
Max
Typ
1.420
1.620
0.750
0.360
0.480
0.380
0.550
0.360
0.510
3.850
4.150
2.900
3.310
1.270
14.000 15.500
1.600
44°
46°
All Dimensions in mm
Min/Max(in mm)
0.4/0.5
1.85/2.15
1.05/1.35
Hall Sensor
1
2
Die
NEW PRODUCT
L
PART
MARKING
SURFACE
3
Sensor Location
AH9246
Document number: DS38097 Rev.2 - 2
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September 2015
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AH9246
Package Outline Dimensions (All dimensions in mm.)
(Cont.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(2)
Package Type: SC59
A
SC59
Min
Max
Typ
0.35
0.50
0.38
B
1.50
1.70
1.60
C
2.70
3.00
2.80
D
0.95
G
1.90
H
2.90
3.10
3.00
J
0.013 0.10
0.05
K
1.00
1.30
1.10
L
0.35
0.55
0.40
M
0.10
0.20
0.15
N
0.70
0.80
0.75
0°
8°

All Dimensions in mm
Dim
A
NEW PRODUCT
B C
G
H
K
J
M
N
D
L
0.595/0.715
1.5/1.7
0.65/0.85
Min/Max(in mm)
PART
MARKING
SURFACE
Die
Hall Sensor
PIN1
Sensor Location
AH9246
Document number: DS38097 Rev.2 - 2
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AH9246
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
(1)
Package Type: SC59
Y
NEW PRODUCT
Z
Dimensions Value (in mm)
Z
3.4
X
0.8
Y
1.0
C
2.4
1.35
E
C
X
E
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written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
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Copyright © 2015, Diodes Incorporated
www.diodes.com
AH9246
Document number: DS38097 Rev.2 - 2
10 of 10
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© Diodes Incorporated