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Diodes Semiconductor Electronic Components Datasheet

AH337 Datasheet

SINGLE PHASE HALL EFFECT SWITCH

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AH337 pdf
AH337
SINGLE PHASE HALL EFFECT SWITCH
Description
Pin Assignments
AH337 is an unipolar Hall-Effect sensor 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 band-gap regulator allows a wide operating
voltage range.
When the magnetic flux density (B) is larger than operate
point (Bop), output is switched on (OUT pin is pulled low).
The output state is held on until a magnetic flux density falls
below Brp. When B is less than Brp, the output is switched
off.
(Top View)
SIP-3L
3. OUT
2. GND
1. Vdd
(Top View)
GND 2.
SC59
3. OUT
1. Vdd
The AH337 is available in SIP-3L and SC59 packages.
Applications
Features
• Unipolar Hall-Effect sensor
• 4.2V to 28V DC operating voltage
• Temperature compensation
• Open drain pre-driver
• 25mA maximum output sink current
• Operating temperature: -40°C to +125°C
• SIP-3L and SC59 packages
(SC59 is commonly known as SOT23 in Asia)
• Green Molding Compound (No Br, Sb) (Note 1)
• VCD/DVD Loader, CD/DVD ROM
• Cover Detector
• Speed Measurement
• Home Appliances
• Home Safety
Notes: 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.
Typical Application Circuit
4.2V ~ 28 V
AH337
Document number: DS31050 Rev. 9 - 2
Vdd
AH337
GND
RL
Output
1 of 9
www.diodes.com
July 2010
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH337 Datasheet

SINGLE PHASE HALL EFFECT SWITCH

No Preview Available !

AH337 pdf
AH337
SINGLE PHASE HALL EFFECT SWITCH
Pin Descriptions
Pin Name
Vdd
GND
OUT
P/I/O
P
P
O
Pin #
1
2
3
Description
Positive Power Supply
Ground
Output Pin
Functional Block Diagram
Vdd
1
Regulator
Hall
plate
Amp
23 OUT
2 GND
Absolute Maximum Ratings (TA = 25°C)
Symbol
Vdd
B
VDS
Id
TS
TJ(MAX)
PD
Characteristics
Supply Voltage
Magnetic Flux Density
Output OFF Voltage
Output “ON” Current
Storage Temperature Range
Maximum Junction Temperature
Package Power Dissipation
Continuous
SIP-3L
SC59
Recommended Operating Conditions
Values
30
Unlimited
30
25
-65~+150
150
550
230
Unit
V
V
mA
°C
°C
mW
mW
Symbol
Parameter
Conditions
Min
Max
Unit
Vdd Supply Voltage (Note 2)
Operating 4.2 28 V
TA Operating Ambient Temperature
Operating
-40 125 °C
Notes: 2. The output of IC will be switched after the supply voltage is over 4.2V, but the magnetic characteristics won't be normal until the
supply is over 4.5V.
AH337
Document number: DS31050 Rev. 9 - 2
2 of 9
www.diodes.com
July 2010
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH337 Datasheet

SINGLE PHASE HALL EFFECT SWITCH

No Preview Available !

AH337 pdf
AH337
SINGLE PHASE HALL EFFECT SWITCH
Electrical Characteristics (TA = 25°C, Vdd = 12V)
Symbol
VDS (SAT)
Ioff
Idd
Characteristic
Output Saturation Voltage
Output Leakage Current
Supply Current
Test Conditions
Iout = 10mA, B > Bop
B < Brp
Output Open
Min
-
-
-
Typ. Max Unit
300 400 mV
< 0.1
10
uA
2 4 mA
Magnetic Characteristics (TA = 25°C, Vdd = 4.5V to 28V, Note 3)
(1mT = 10 Gauss)
Symbol
Parameter
Min Typ.
Max
Unit
Bops(south pole to brand side)
Brps(south pole to brand side)
Bhy(|Bopx|-|Brpx|)
Operation Point
Release Point
Hysteresis
90 120 150 Gauss
30 60
90 Gauss
- 60
- Gauss
Notes: 3. Magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Operating Characteristics
Output
S
Marking side
N
(SC59)
S
Marking side
N
(SIP-3L)
( off -state )
Vdd
Turn off
B hy
Turn on
V SAT
0
B rp
( on -state )
B op
( Magnetic flux density B )
AH337
Document number: DS31050 Rev. 9 - 2
3 of 9
www.diodes.com
July 2010
© Diodes Incorporated




Part Number AH337
Description SINGLE PHASE HALL EFFECT SWITCH
Maker Diodes Incorporated
Total Page 9 Pages
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