NOT RECOMMENDED FOR NEW DESIGN
USE
AH3774
AH175
HALL EFFECT LATCH FOR HIGH TEMPERATURE
Description
AH175 is a single-digital-output Hall-Effect latch sensor for high
temperature operation. The device includes an on-chip Hall voltage
generator for magnetic sensing, an amplifier to amplify Hall voltage,
and a comparator to provide switching hysteresis for noise rejection,
an open-collector output pre-driver. An internal band-gap regulator
provides a temperature compensated supply voltage for internal
circuits and allows a wide operating supply 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 reversal falls below Brp. When
B
is
less than Brp, the output is switched off.
The AH175 is available in SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) and
SC59 packages.
Pin Assignments
(Front View)
3. OUT
2. GND
1. Vcc
SIP-3 (Bulk Pack)
(Top View)
3. OUT
GND 2.
1. Vcc
SC59
Features
•
•
•
•
•
•
•
Bipolar Hall-Effect Latch Sensor
3.5V to 20V DC Operating Voltage
Open Collector Pre-Driver
25mA Output Sink Current
Built-in Power Reverse Protection
Operating Temperature: -40º to +150º
C
C
SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) and SC59 Packages
(SC59 is Commonly Known as SOT23 in Asia)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
•
•
•
•
Rotor Position Sensing
Current Switch
Encoder
RPM Detection
Notes:
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.
Typical Applications Circuit
I
A
I
B
M
Digital Hall Effect Sensor
Driver
&
Control Logic
I
C
I
a
I
b
I
c
RPM sensing
M: Three Phase Hall Motor
H
A
H
B
H
C
Hall Motor Driver
3 Phase Hall Motor
AH175
Document number: DS31043 Rev. 11 - 3
1 of 9
www.diodes.com
August 2017
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH3774
AH175
Pin Descriptions
Pin Name
Vcc
GND
OUT
Pin #
1
2
3
Ground
Output Stage
Description
Positive Power Supply
Functional Block Diagram
V
CC
1
REG.
3
AMP
OUT
2
GND
Absolute Maximum Ratings
(T
A
= +25C)
Symbol
V
CC
V
OUT
(off)
I
O
(sink)
T
S
T
J
P
D
Characteristics
Supply Voltage
Output “Off” Voltage
Output “On” Current
Storage Temperature Range
Maximum Junction Temperature
Power Dissipation
SIP-3 (Ammo Pack)
SIP-3 (Bulk Pack)
SC59
Values
20
20
25
-65 to +150
+150
550
550
230
Unit
V
V
mA
C
C
mW
mW
mW
Recommended Operating Conditions
Symbol
V
CC
T
A
Notes:
Characteristic
Supply Voltage
Operating Ambient Temperature (Note 4)
Conditions
Operating
Operating
Min
3.5
-40
Max
20
+150
Unit
V
C
4. The device P
D
and Safety Operation Area should not be exceeded.
AH175
Document number: DS31043 Rev. 11 - 3
2 of 9
www.diodes.com
August 2017
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH3774
AH175
Electrical Characteristics
(T
A
= +25C)
Symbol
V
OUT (SAT)
I
CC
Characteristics
Output Saturation Voltage
Supply Current
Conditions
V
CC
= 12V, OUT ”ON”
I
O
= 10mA
V
CC
= 12V, OUT ”OFF”
Min
-
-
Typ.
300
3.5
Max
400
6
Unit
mV
mA
Magnetic Characteristics
(T
A
= +25C, V
CC
= 12V, unless otherwise specified, Note 5)
(1mT = 10 Gauss)
A Grade
Symbol
Bops(South Pole to Brand Side)
Brps(South Pole to Brand Side)
Bhy(|Bopx|-|Brpx|)
Parameter
Operation Point
Release Point
Hysteresis
Min
15
-60
30
Typ
-
-
80
Max
60
-15
120
Unit
Gauss
Gauss
Gauss
B Grade
Symbol
Bops(South Pole to Brand Side)
Brps(South Pole to Brand Side)
Bhy(|Bopx|-|Brpx|)
Notes:
Parameter
Operation Point
Release Point
Hysteresis
Min
5
-80
10
Typ
-
-
80
Max
80
-5
160
Unit
Gauss
Gauss
Gauss
5. Magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Operating Characteristics
V
out
(Output Voltage)
V
cc
High
S
S
Marking side
V
d
B
hy
Low
Marking side
N
SC59
N
SIP-3
(Ammo Pack)
SIP-3 (Bulk Pack)
V
SAT
B
rp
0
B
op
(Magnetic Flux Density)
AH175
Document number: DS31043 Rev. 11 - 3
3 of 9
www.diodes.com
August 2017
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
AH3774
AH175
Ordering Information
AH175 - X X - X - X
Package
P : SIP-3 (Ammo Pack)
SIP-3 (Bulk Pack)
W : SC59
Lead Free
G : Green
Packing
A : Ammo Box (Note 7)
B : Bulk (Note 8)
7 : Tape & Reel
Magnetic
Characteristics
A or B
Bulk
Part Number
Status
(Note 9)
Package
Code
Packaging
(Note 6)
SIP-3
(Ammo Pack)
SIP-3
(Ammo Pack)
SIP-3
(Bulk Pack)
SIP-3
(Bulk Pack)
SC59
SC59
Quantity
NA
NA
1000
1000
NA
NA
Part
Number
Suffix
NA
NA
-B
-B
NA
NA
7” Tape and Reel
Quantity
NA
NA
NA
NA
3000/Tape & Reel
3000/Tape & Reel
Part Number
Suffix
NA
NA
NA
NA
-7
-7
Ammo Box
Part
Quantity Number
Suffix
4000/Box
4000/Box
NA
NA
NA
NA
-A
-A
NA
NA
NA
NA
AH175-PG-A-A
AH175-PG-A-B
AH175-PG-B-A
AH175-PG-B-B
AH175-WG-7-A
AH175-WG-7-A
Notes:
NRND
NRND
NRND
NRND
NRND
NRND
P
P
P
P
W
W
6. 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.
7. Ammo Box is for SIP-3 Spread Lead.
8 . Bulk is for SIP-3 Straight Lead.
9: NRND = Not Recommended for New Design
AH175
Document number: DS31043 Rev. 11 - 3
5 of 9
www.diodes.com
August 2017
© Diodes Incorporated
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