AH276Q-PL-BB - Diodes Incorporated

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AH276Q
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Description
Pin Assignments
AH276 are integrated Hall sensors with output drivers, mainly
( Top View )
designed for electronic commutation of brush-less DC Fan. This IC
internally includes the regulator, protecting diode, Hall plate, amplifier,
comparator, and a pair of complementary open-collector outputs (DO,
276
DOB).
1 : Vcc
While the magnetic flux density (B) is larger than operate point (Bop),
2 : DO
DO will turn on (low), and meanwhile DOB will turn off (high). Each
output is latched until B is lower than release point (Brp), and then
3 : DOB
DO, DOB transfer each state.
For DC fan application, sometimes need to test power reverse
1 2
3
4
4 : GND
connection condition. Internal diode only protects chip-side but not for
coil-side. If necessary, add one external diode to block the reverse
current from coil-side.
Features

Applications
On-chip Hall sensor with two different sensitivity and hysteresis
settings for AH276

Built-in protecting diode only for chip reverse power connecting

-20°C to +85°C operating temperature

Lead Free Package: SIP-4L

SIP-4L: Available in “Green” Molding Compound (No Br, Sb)

Lead-Free Finish; RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3) Notes:

Dual-coil Brush-less DC Motor

Dual-coil Brush-less DC Fan

Revolution Counting

Speed Measurement
1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
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
Brush-less DC Fan
AH276Q
Document number: DS31066 Rev. 6 - 2
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September 2013
© Diodes Incorporated
AH276Q
Pin Descriptions
Pin Name
P/I/O
Pin #
VCC
P
1
Power Supply Input
Function
DO
DOB
GND
O
O
P
2
3
4
Output Pin
Output Pin
Ground
Functional Block Diagram
1
V cc
DO
2
REG.
H a ll P la te
DOB
Amp
3
GND
4
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Symbol
Note:
Rating
Unit
VCC
Supply Voltage
Parameter
20
V
VRCC
B
Reverse VCC Polarity Voltage
-20
Magnetic Flux Density
Io
Output “on” Current
(Note 3)
V
Unlimited
Continuous
Hold
Peak (Start Up)
0.4
0.5
0.7
-65 ~ +150
A
C
mW
Ts
Storage Temperature Range
PD
Package Power Dissipation (SIP-4L)
550
TJ
Maximum Junction Temperature
+150
C
JA
JC
Thermal Resistance Junction-to-Ambient (SIP-4L)
227
C/W
Thermal Resistance Junction-to-Case (SIP-4L)
49
C/W
3. PD shall be within Safety Operation Area.
TA
TJ
Tc
 JA
 JC
AH276Q
Document number: DS31066 Rev. 6 - 2
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AH276Q
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol
Note:
Parameter
Conditions
Min
Max
Unit
VCC
Supply Voltage (Note 4)
Operating
3.5
20
V
TA
Operating Ambient Temperature
Operating
-20
+85
C
4. The output DO/DOB is switching as magnetic field change (S>300G, N<-300G).
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
VZ
Min
Typ
Max
Unit
Output Zener Breakdown
Conditions
—
35
—
V
Output Saturation Voltage
VCC = 14V, IL = 400mA
—
0.6
0.9
V
ICEX
Output Leakage Current
VCE = 14V, VCC = 14V
—
<0.1
10
µA
ICC
Supply Current
VCC = 20V, Output Open
7
16
25
mA
VCE(SAT)
Magnetic Characteristics (Note 5) (@TA = +25°C, VCC = 14V, unless otherwise specified.)
A grade
Symbol
Bop
Brp
Bhy
Characteristic
Operate Point
Release Point
Hysteresis
Min
10
-50
—
Typ
—
—
75
Max
50
-10
—
Unit
Gauss
Gauss
Gauss
Symbol
Characteristic
Min
Typ
Max
Unit
Bop
Brp
Bhy
Operate Point
Release Point
Hysteresis
5
-70
—
—
—
75
70
-5
—
Gauss
Gauss
Gauss
Symbol
Bop
Brp
Characteristic
Operate Point
Release Point
Min
—
-100
Typ
—
—
Max
100
—
Unit
Gauss
Gauss
Bhy
Hysteresis
—
75
—
Gauss
B grade
C grade
Note:
5. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
Vcc
DOB
( Output Voltage )
( Output Voltage )
DO
( off-state )
Bhy
Turn off
Turn on
0
Bop
S
N
( Magnetic flux density B )
AH276Q
Document number: DS31066 Rev. 6 - 2
Turn oFF
Vsat
Vsat
Brp
Bhy
Turn on
Vcc
( on-state )
( on-state )
N
( off-state )
Brp
0
Bop
S
( Magnetic flux density B )
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AH276Q
Performance Characteristics
25
550
105
198
TA (C)
PD (mW)
TA (C)
PD (mW)
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
Power Dissipation Curve
PD (mW)
600
500
400
300
200
100
0
0
25
50
75
85
100
125
150
TA (°C)
Ordering Information
Note:
Part Number
Package
Code
Packaging
AH276Q-PL-B-A
AH276Q-PL-B-B
AH276Q-PL-B-C
AH276Q-PG-B-A
AH276Q-PG-B-B
AH276Q-PG-B-C
P
P
P
P
P
P
SIP-4L
SIP-4L
SIP-4L
SIP-4L
SIP-4L
SIP-4L
Quantity
1000
1000
1000
1000
1000
1000
Bulk
Part Number Suffix
-B
-B
-B
-B
-B
-B
Magnetic
Characteristics
A
B
C
A
B
C
6. Please refer to page 3 (Magnetic Characteristics table).
AH276Q
Document number: DS31066 Rev. 6 - 2
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AH276Q
Marking Information
( Top View )
Part Number
276Q
Y WW X
Y : Year : 0~9
WW : Week : 01~52, "52" represents
52 and 53 week
X : Internal Code : a~z : Lead Free
A~Z : Green
SIP-4L
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
a1
a2
SIP-4
Dim
Min
Max
A
5.12
5.32
B
4.10
4.30
C
3.55
3.75
D
0.38
0.44
E
0.35
0.41
F
1.24
1.30
H
1.32
1.52
I
1.45
1.65
J
0.00
0.2
K
13.00
15.5
L
0.63
0.83
a1
5°
3
a2
4°
7°
All Dimensions in mm
K
C
E
I
H
L
D
AB
F
J
Marking side
1.95士0.1mm
1.1士0.1mm
1
0.7 mm
Document number: DS31066 Rev. 6 - 2
3
4
Sensor Location
Active Area Depth
AH276Q
2
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AH276Q
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Copyright © 2013, Diodes Incorporated
www.diodes.com
AH276Q
Document number: DS31066 Rev. 6 - 2
6 of 6
www.diodes.com
September 2013
© Diodes Incorporated