AH173
INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH
TEMPERATURE
Features
•
•
•
•
•
•
•
•
Bipolar Hall Effect Latch Sensor
3V to 20V DC Operation Voltage
Built-in Pull-Up Resistor
25mA Output Sink Current
Operating Temperature:
−
40
°
C ~
+
125
°
C
Lead Free Packages: SC59-3L and SIP-3L (Note 1)
SC59-3L (commonly known as SOT23 in Asia):
Available in “Green” Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 2)
General Description
AH173 is a single-digital-output Hall-effect sensor with pull-up
resistor 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, and an output driver with a pull-up
resistor (Rpu). An internal band-gap regulator is used to provide
temperature compensated supply voltage for internal circuits and
allows a wide operating supply range. While the magnetic flux
density (B) is larger than operate point (Bop), the OUT pin turns
on (low). If B moves toward release point (Brp), the OUT pin is
latched “on” state prior to B < Brp. When B < Brp, the OUT pin
goes into “off ” state.
Applications
•
•
•
•
Rotor Position Sensing
Current Switch
Encoder
RPM Detection
Functional Application 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
AH173 Rev. 9
DS31044
1 of 9
www.diodes.com
SEPTEMBER 2009
©
Diodes Incorporated
AH173
INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH
TEMPERATURE
Ordering Information
AH173 - X X - X - X
Package
P : SIP-3L
W : SC59-3L
Lead Free
L : Lead Free (Note 1)
G : Green
Packing
A : Ammo Box (Note 4)
B : Bulk (Note 5)
7 : Tape & Reel
Magnetic
Characteristics
A or B
Tube/Bulk
Device
Lead-free
7” Tape and Reel
Quantity
NA
NA
NA
NA
3000/Tape & Reel
3000/Tape & Reel
3000/Tape & Reel
3000/Tape & Reel
Part
Number
Suffix
NA
NA
NA
NA
-7
-7
-7
-7
Ammo Box
Quantity
4000/Box
4000/Box
NA
NA
NA
NA
NA
NA
Part
Number
Suffix
-A
-A
NA
NA
NA
NA
NA
NA
Magnetic
Characteristics
A
B
A
B
A
B
A
B
Package Packaging
Code
(Note 3) Quantity
P
P
P
P
W
W
W
W
SIP-3L
SIP-3L
SIP-3L
SIP-3L
SC59-3L
SC59-3L
SC59-3L
SC59-3L
NA
NA
1000
1000
NA
NA
NA
NA
Lead-free
Lead-free
Lead-free
Lead-free
Lead-free
AH173-PL-A-A
AH173-PL-A-B
AH173-PL-B-A
AH173-PL-B-B
AH173-WL-7-A
AH173-WL-7-B
AH173-WG-7-A
AH173-WG-7-B
Notes:
Part
Number
Suffix
NA
NA
-B
-B
NA
NA
NA
NA
1. SIP-3L is available in “Lead Free” product only.
2. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
3. 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.
4. Ammo Box is for SIP-3L Spread Lead.
5. Bulk is for SIP-3L Straight Lead.
Pin Assignment
(1) SIP-3L
(2) SC59-3L (commonly known as SOT23 in Asia)
( Top View )
( Top View )
3. OUT
2. GND
1. Vcc
3. OUT
GND 2.
1 . Vcc
AH173 Rev. 9
DS31044
2 of 9
www.diodes.com
SEPTEMBER 2009
©
Diodes Incorporated
AH173
INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH
TEMPERATURE
Pin Descriptions
Pin Name
Vcc
GND
OUT
Pin #
1
2
3
Description
Positive Power Supply
Ground
Output Stage
Block Diagram
V
CC
1
REG.
R
pu
3
AMP
OUT
2
GND
Absolute Maximum Ratings
Symbol
V
CC
V
OUT
(off)
I
O
(sink)
Ts
T
J
P
D
(T
A
= 25°C)
Characteristics
Supply Voltage
Output “Off” Voltage
Output “On” Current
Storage Temperature Range
Maximum Junction Temperature
Power Dissipation
SIP-3L
SC59-3L
Values
20
20
25
-65~+150
+150
550
230
Unit
V
V
mA
°C
°C
mW
mW
Recommended Operating Conditions
Symbol
V
CC
T
A
Characteristic
Supply Voltage
Operating Ambient Temperature
Conditions
Operating
Operating
Min
3
-40
Max
20
125
Unit
V
°C
AH173 Rev. 9
DS31044
3 of 9
www.diodes.com
SEPTEMBER 2009
©
Diodes Incorporated
AH173
INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH
TEMPERATURE
Electrical Characteristics
Symbol
Characteristics
(T
A
= 25
°
C)
V
OUT (SAT)
I
CC
Rpu
V
d
Output Saturation Voltage
Supply Current
Internal Pull-up Resistor
Dropout Voltage
Conditions
V
CC
= 12V, OUT ”ON”
I
O
= 10mA
V
CC
= 12V, OUT ”OFF”
Min
Typ.
Max
Unit
-
-
7
-
300
3.5
10
-
400
6
13
0.3
mV
mA
KΩ
V
V
d
= V
CC
- V
Ce
Magnetic Characteristics
(T
A
= 25°C, Vcc = 12V, Note 6)
(1mT = 10 Gauss)
A grade
Symbol
Bops(south pole to brand side)
Brps(south pole to brand side)
Bhy(
Bopx
−
Brpx )
B grade
Symbol
Bops(south pole to brand side)
Brps(south pole to brand side)
Bhy(
Bopx
−
Brpx
)
Notes:
Parameter
Operation Point
Release Point
Min
15
-60
Typ.
-
-
Max
60
-15
Unit
Gauss
Gauss
Hysteresis
-
80
-
Gauss
Parameter
Operation Point
Release Point
Min
5
-80
Typ.
-
-
Max
80
-5
Unit
Gauss
Gauss
Hysteresis
-
80
-
Gauss
6. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
V
out
(Output Voltage)
V
cc
High
S
S
Marking Side
V
d
B
hy
Low
Marking Side
N
( SC59 )
N
(SIP3)
V
SAT
B
rp
0
B
op
(Magnetic Flux Density)
AH173 Rev. 9
DS31044
4 of 9
www.diodes.com
SEPTEMBER 2009
©
Diodes Incorporated
AH173
INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH
TEMPERATURE
Performance Characteristics
(1) SIP-3L
T
A
(
°
C)
P
D
(mW)
T
A
(
°
C)
P
D
(mW)
P
D
(m W )
600
500
400
300
200
100
0
0
-4 0
25
50
75
100
125
150
T
A
(°C )
25
550
105
198
50
440
110
176
60
396
115
154
70
352
120
132
80
308
125
110
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
P o w e r D is s ip a tio n C u rve
(2) SC59-3L (commonly known as SOT23 in Asia)
T
A
(
°
C)
25
50
60
70
80
85
90
100
110
120
130
140
150
P
D
(mW)
230
P
D
(m W )
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 rve
300
200
100
0
0
-4 0
25
50
75
100
125
150
T
A
(°C )
AH173 Rev. 9
DS31044
5 of 9
www.diodes.com
SEPTEMBER 2009
©
Diodes Incorporated
