HALL-EFFECT SWITCH. AH9247 Datasheet

AH9247 SWITCH. Datasheet pdf. Equivalent


Diodes AH9247
Description
The AH9247 is a high sensitivity Hall-effect switch with internal pull-up
resistor on the output, designed for battery-operation, handheld
equipments.
A chopper stabilized amplifier improves stability of magnetic switch
points. A sleep-awake logic controls the IC in sleep time or awake
time. This function will reduce the average operating current of the IC.
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 will reduce to some µA.
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 (BRP), the output will
be turned off.
The AH9247 is available in TO92S (TYPE B), SC59 and DFN-2X2-3
packages which are optimized for most applications.
AH9247
HIGH SENSITIVITY
MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Pin Assignments
(Front View)
3
OUTPUT
2
GND
1
VCC
TO92S (TYPE B)
(Top View)
GND 3
2 OUTPUT
VCC 1
1 VCC
OUTPUT 2
3 GND
SC59
DFN-2X2-3
Features
Micropower Operation
2.5V to 5.5V Power Supply
Switching for Both Poles of a Magnet (Omnipolar)
Stabilized Chopper
Superior Temperature Stability
Digital Output Signal
Built-in Pull-up Resistor
ESD (HBM): 6000V
Small Low Profile DFN-2X2-3 and Industry Standard SC59 and
TO92S (TYPE B) Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Magnet Switch in Low Duty Cycle Applications
Notes:
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.
AH9247
Document number: DS38119 Rev. 4 - 2
1 of 13
www.diodes.com
November 2018
© Diodes Incorporated


AH9247 Datasheet
Recommendation AH9247 Datasheet
Part AH9247
Description MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Feature AH9247; NEW PRODUCT Description The AH9247 is a high sensitivity Hall-effect switch with internal pull-up r.
Manufacture Diodes
Datasheet
Download AH9247 Datasheet




Diodes AH9247
Typical Applications Circuit
AH9247
100pF
2
OUTPUT
1
VCC
AH9247
GND
3
10nF
2.5V to 5.5V
Pin Descriptions
TO92S (TYPE B)
1
2
3
Pin Number
SC59
1
3
2
DFN-2X2-3
1
3
2
Functional Block Diagram
Sleep/Awake
Control
VCC
1(1)
Timing
Logic
Pin Name
VCC
GND
OUTPUT
Function
Power supply pin
Ground pin
Output pin
Bias
Hall
Plate
+
-
Chopper
Comparator
A (B)
A for TO92S (TYPE B)
B for SC59 and DFN-2X2-3
2(3)
GND
3(2) OUTPUT
AH9247
Document number: DS38119 Rev. 4 - 2
2 of 13
www.diodes.com
November 2018
© Diodes Incorporated



Diodes AH9247
AH9247
Absolute Maximum Ratings (@TA=+25°C, Note 4)
Symbol
Parameter
Rating
Unit
VCC
ICC
VOUT
IOUT
B
Supply Voltage
Supply Current (Fault)
Output Voltage
Output Current
Magnetic Flux Density
7
6
7
2
Unlimited
V
mA
V
mA
Gauss
TO92S (TYPE B)
400
PD
Power Dissipation
SC59
230
mW
DFN-2X2-3
230
TSTG
TJ
Storage Temperature
Junction Temperature
ESD (Human Body Model) (Note 5)
-55 to +150
°C
+150
°C
6000
V
ESD (Machine Model) (Note 5)
400
V
Notes: 4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
5. 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
VCC
TOP
Parameter
Supply Voltage
Operating Temperature
Min
Max
Unit
2.5
5.5
V
-40
+85
°C
Electrical Characteristics (@TA=+25°C, VCC=3V, unless otherwise specified.)
Symbol
VCC
IAW
ISL
IAVG
IOUT
VSAT
tAW
tSL
D
fC
Parameter
Supply Voltage
Supply Current
Output Current
Saturation Voltage
Awake Mode Time
Sleep Mode Time
Duty Cycle
Chopper Frequency
Conditions
Operating
Awake
Sleep
Average
IOUT=1.0mA
Operating
Operating
Min
Typ
Max
Unit
2.5
3
5.5
V
1.8
3
mA
4
10
µA
8
15
µA
1.0
mA
0.4
V
120
µs
80
120
ms
0.15
%
15
kHz
AH9247
Document number: DS38119 Rev. 4 - 2
3 of 13
www.diodes.com
November 2018
© Diodes Incorporated







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