NOT RECOMMENDED FOR NEW DESIGN
USE
AH1808
AH1801
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Description
AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which is
with two Hall effect plates and a output driver, mainly designed for
battery–operation, hand-held equipment (such as Cellular and
Cordless Phone, PDA). The total operation power is down to 24µW in
the 3V supply.
Either north or south pole of sufficient strength will turn the output off.
The output will be turned on under no magnetic field.
While the magnetic flux density
(B)
is larger than operate point
(Bop),
the output will be turned off, the output is held until
B
is lower than
release point
(Brp),
then turned on.
Pin Assignments
( Top View )
2. Output
GND 3.
1. VDD
SC59
( Top View )
3. GND
( Top View )
6. NC
5. GND
4. NC
Features
Micropower Operation
Operation with North or South Pole
2.5V to 5.5V Battery Operation
Inverted Output-on without Magnet Present
Chopper Stabilized
Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
Good RF Noise Immunity
-40C to +85C Operating Temperature
Low Profile 3 Pin SC59 (Commonly Known as SOT23 in Asia)
and DFN2020-3, DFN2020-6 Packages
ESD (HBM)
＞
5KV for DFN2020-3 and DFN2020-6
＞
6KV for SC59
SC59, DFN2020-3 and DFN2020-6: Available in “Green”
Molding Compound (No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
1. VDD
3. Output
1. VDD
2. NC
3. Output
DFN2020-3
DFN2020-6
Notes:
Applications
Cellular Phone
PDA
Cordless Phone
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ 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.
Typical Applications Circuit
2.5~5.5V
R
L
C
AH1801
GND
Output
Notes:
4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF to 100nF.
R
L
is the pull-up resistor, the recommended resistance is 10KΩ to 100KΩ.
AH1801
Document number: DS31110 Rev. 8 - 3
1 of 10
www.diodes.com
April 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH1808
AH1801
Pin Descriptions
Pin Name
VDD
GND
Output
NC
P/I/O
P/I
P/I
O
Description
Power Supply Input
Ground
Output Pin
No Connected
Functional Block Diagram
1
VDD
Power
switch
Offset
Cancelling
Hall Plate
Output
Amp
Latch
3
Logical
GND
2
Offset
Cancelling
Hall Plate
Amp
Latch
Absolute Maximum Ratings
(@T
A
= +25° unless otherwise specified.)
C,
Symbol
V
DD
B
T
S
P
D
T
J
Parameter
Supply Voltage
Magnetic Flux Density
Storage Temperature Range
Package Power Dissipation
Maximum Junction Temperature
SC59
DFN2020-3
DFN2020-6
+150
C
Rating
7
Unlimited
-65 to +150
230
C
mW
Unit
V
Recommended Operating Conditions
(@T
A
= +25° unless otherwise specified.)
C,
Symbol
V
DD
T
A
Parameter
Supply Voltage
Operating Temperature Range
Conditions
Operating
Operating
Rating
2.5 to 5.5
-40 to +85
Unit
V
C
AH1801
Document number: DS31110 Rev. 8 - 3
2 of 10
www.diodes.com
April 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH1808
AH1801
Electrical Characteristics
Symbol
V
OUT
I
OFF
I
DD(EN)
Parameter
Output On Voltage
Output Leakage Current
(@T
A
= +25° V
DD
= 3V, unless otherwise specified.)
C,
Conditions
I
OUT
= 1mA
V
OUT
= 5.5V, Output off
Chip enable, T
A
= +25C, V
DD
= 3V
Chip enable, T
A
= -40 to +85C,
V
DD
= 2.5V to 5.5V
Chip disable, T
A
= +25C, V
DD
= 3V
Chip disable, T
A
= -40 to +85C,
V
DD
= 2.5V to 5.5V
Average supply current,
T
A
= +25C, V
DD
= 3V
Average supply current,
T
A
= -40 to +85C, V
DD
= 2.5V to 5.5V
(Note 5)
(Note 5)
Min
-
-
-
-
-
-
-
-
-
-
-
Typ
0.1
<0.1
3
3
5
5
8
8
75
75
0.1
Max
0.3
1
6
9
10
18
16
27
150
150
-
Unit
V
µA
mA
mA
µA
µA
µA
µA
µs
ms
%
I
DD(DIS)
Supply Current
I
DD(AVG)
t
AWAKE
t
PERIOD
D.C.
Notes:
Awake Time
Period
Duty Cycle
5. When power is initially on, the operating V
DD
(2.5V to 5.5V) must be applied to be guaranteed for the output sampling. The output state is valid after the
second operating phase (typical 150ms).
t
PERIOD
t
AWAKE
I
DD(EN)
Sample and output
latched
I
DD (DIS)
0
AH1801
Document number: DS31110 Rev. 8 - 3
3 of 10
www.diodes.com
April 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH1808
AH1801
Magnetic Characteristics
(@T
A
= +25° V
DD
= 3V, unless otherwise specified.)
C,
(1mT=10 Gauss)
Symbol
Bops(south pole to brand side)
Bopn(north pole to brand side)
Brps(south pole to brand side)
Brpn(north pole to brand side)
Bhy(
Bopx
Brpx
)
Notes:
Characteristic
Operate Point
Release Point
Hysteresis
Min
-
-60
10
-
-
Typ
40
-40
30
-30
10
Max
60
-
-
-10
-
Unit
Gauss
6. Typical data is at T
A
= +25C, V
DD
=3V, and for design information only.
7. Operate point and release point will vary with supply voltage and operating temperature.
Output ( Voltage )
( off-state )
Turn off
Turn off
Turn Turn
on on
( on-state )
-B
B
opn
B
rpn
B
rps
B
ops
+B
Magnetic
Performance Characteristics
(1) SC59 / DFN2020-3 /DFN2020-6
T
A
(C)
P
D
(mW)
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
P
D
(mW)
Power Dissipation Curve
300
200
100
0
0
25
50
75
85
100
125
150
T
A
(。C)
AH1801
Document number: DS31110 Rev. 8 - 3
4 of 10
www.diodes.com
April 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH1808
AH1801
Ordering Information
AH1801 - XX G - 7
Package
W : SC59
FJ : DFN2020-3
SN : DFN2020-6
Part Number
AH1801-WG-7
AH1801-FJG-7
AH1801-SNG-7
Notes:
Green
Packing
7 : Tape & Reel
G : Green
Status
(Note 9)
NRND
NRND
NRND
Package Code
W
FJ
SN
Packaging
(Note 8)
SC59
DFN2020-3
DFN2020-6
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
3000/Tape & Reel
-7
3000/Tape & Reel
-7
8. Pad layout as shown on Diodes Incorporated’s suggested pad layout document, which can be found on our website at
http://www.diodes.com/package-outlines.html.
9. NRND = Not Recommended for New Design
Marking Information
(1) SC59
( 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
Part Number
AH1801
Package
SC59
Identification Code
KB
AH1801
Document number: DS31110 Rev. 8 - 3
5 of 10
www.diodes.com
April 2018
© Diodes Incorporated
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