Diodes AH1802 Micropower, ultra-sensitive omnipolar hall-effect sensor switch Datasheet

AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
General Description
Features
•
•
•
•
•
•
•
•
•
•
Micropower operation
Operation with magnetic field of either north or south
pole (omnipolar)
2.5V to 5.5V battery operation
Chopper stabilized
• Superior temperature stability
• Extremely Low Switch-Point Drift
• Insensitive to Physical Stress
Good RF noise immunity
-40°C to 85°C operating temperature
SC59/Low profile DFN2020-6 package
ESD (HBM) > 5KV for DFN2020-6
> 6KV for SC59
SC59 (commonly known as SOT23 in Asia) and
DFN2020-6: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 1)
AH1802 is comprised of two Hall effect plates and an open-drain
output driver, mainly designed for battery-operation, hand-held
equipment (such as Cellular and Cordless Phone, PDA). The
total power consumption in normal operation is typically 24 W
with a 3V power source.
Either north or south pole of sufficient strength will turn the output
on. The output will be turned off under no magnetic field. While
the magnetic flux density (B) is larger than operating point (Bop),
the output will be turned on (low), the output is held until B is
lower than release point (Brp), then turned off.
Applications
•
•
•
Cover switch in clam-shell cellular phones
Cover switch in Notebook PC/PDA
Contact-less switch in consumer products
Ordering Information
AH1 802-X X X
Note:
Package
Lead Free
Packing
W : SC59
SN : DFN2020-6
G : Green
-7 : Taping
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
AH1802-W
AH1802-SN
Note:
Package
Code
W
SN
Packaging
(Note 2)
SC59
DFN2020-6
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
3000/Tape & Reel
-7
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.
AH1802 Rev. 2
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© Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
Pin Assignment
(1) SC59
(2) DFN2020-6
( Top View )
( Bottom view )
3. Output
1. Vdd
NC
3. Output
GND 2.
1. Vdd
NC
NC
2. GND
Note:
3. NC is “No Connection” which is recommended to be tied to ground.
Pin Descriptions
Name
Vdd
GND
Output
P/I/O
P/I
P/I
O
Pin #
1
2
3
Description
Power Supply Input
Ground
Output Pin
Block Diagram
1
Vdd
Power
switch
Offset
Cancelling
Hall Plate
Output
Amp
Latch
3
Logical
GND
2
AH1802 Rev. 2
Offset
Cancelling
Hall Plate
Amp
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Latch
JULY 2007
© Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
Typical Circuit
2.5~5.5V
RL
C
Output
AH1802
GND
Note:
4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF.
Absolute Maximum Ratings
Symbol
Vdd
B
TA
TS
PD
TJ
(at TA = 25°C)
Characteristics
Supply voltage
Magnetic flux density
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
Values
7
Unlimited
-40 to +85
-65 to +150
SC59
DFN2020-6
Maximum Junction Temperature
Recommended Operating Conditions
Symbol
Vdd
AH1802 Rev. 2
Parameter
Supply Voltage
Unit
V
°C
°C
230
mW
150
°C
( TA = 25°C )
Conditions
Operating
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Rating
Unit
2.5~5.5
V
JULY 2007
© Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
Electrical Characteristics
Symbol
Vout
Ioff
Idd(en)
Idd(dis)
Idd(avg)
Tawake
Tperiod
D.C.
( TA = +25°C, Vdd = 3V; unless otherwise specified)
Characteristic
Conditions
Output On Voltage
Iout = 1mA
Output Leakage Current Vout = 5.5V, Output off
Chip enable, TA = 25°C, Vdd = 3V
Chip enable, TA = -40~85°C, Vdd = 2.5~5.5V
Chip disable, TA = 25°C, Vdd = 3V
Chip
disable, TA = -40~85°C, Vdd = 2.5~5.5V
Supply Current
Average supply current,
TA = 25°C, Vdd = 3V
Average supply current,
TA = -40~85°C, Vdd = 2.5~5.5V
Awake Time
Period
Duty Cycle
Magnetic Characteristics
Min
Typ
Max
Unit
-
0.1
<0.1
3
3
5
5
0.3
1
6
9
10
14
V
µA
mA
mA
µA
µA
-
8
16
µA
-
8
23
µA
-
75
75
0.1
125
125
-
µs
ms
%
(TA = 25°C, Vdd = 3V, Note 5,6)
(1mT=10 Gauss)
Symbol
Characteristic
Bops(south pole to brand side)
Operate Point
Bopn(north pole to brand side)
Brps(south pole to brand side)
Release Point
Min
Typ
Max
20
28
40
-40
-28
-20
10
20
-
-
-20
-10
5
8
-
Brpn(north pole to brand side)
Bhy( Bopx − Brpx )
Note:
Hysteresis
Unit
Gauss
5. Typical data is at TA = 25°C, Vdd = 3V, and for design information only.
6. Operating point and release point will vary with supply voltage and operating temperature.
Vcc ( off-state )
Turn on
Bhy
Turn off
Output
( Output Voltage )
( Output Voltage )
Output
( on-state )
Vsat
Bopn Brpn 0
( Magnetic flux density B )
AH1802 Rev. 2
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( off-state )
Turn off
Vcc
Bhy
Turn on
Vsat
( on-state )
0 Brps Bops
( Magnetic flux density B )
JULY 2007
© Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
Performance Characteristics
(1) SC59 and DFN2020-6
TA (°C)
25
50
60
70
80
85
90
100
110
120
130
140
150
PD (mW)
230
184
166
147
129
120
110
92
74
55
37
18
0
P o w e r D is s ip a tio n C u rv e
P D (m W )
250
200
150
100
50
0
0
25
50
75
100
125
150
T A (℃ )
Marking Information
(1) SC59
(2) DFN2020-6
( Top View )
XX Y M X
Part Number
AH1802
AH1802 Rev. 2
( Top View )
XX
Y
M
X
Pin 1 indicator
: KC : AH1802
: Year 0~9
: Month A~L
: Internal code
A~Z: Green
Package
SC59
XX
YM X
Identification Code
KC
Part Number
AH1802
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KC : AH1802
Date code
Internal code
A~Z : Green
M : Month (A~L)
Y : Year (0~9)
Package Identification Code
DFN2020-6
KC
JULY 2007
© Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
Package Information
(unit: mm)
(1) SC59 (commonly known as SOT23 in Asia)
TOP VIEW
1.50/
1.70
0.35/0.50
2.70/
3.00
1.90
2.90/3.10
1.00/
1.30
0.013/0.10
0.10/0.20
0.95
0.35/0.55
0°/8°
0.43mon.
0.57/0.63
(2) DFN2020-6
Marking
0.05 C
0/0.05
0.15max.
0.15 C
0.08 C
2x
Pin#1 ID
1.95/2.075
A
Sensor location
0.30/0.40
1.45/1.65
R0
2x-
Seating plane
C
0.76/0.96
1.95/2.075
B
(Active area depth)
.1
0.15 C
0.65nom.
0.2/0.3
0.05 M C A B
Bottom View
AH1802 Rev. 2
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JULY 2007
© Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR
HALL-EFFECT SENSOR SWITCH
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.
AH1802 Rev. 2
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© Diodes Incorporated
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