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AH276Q-PG-B-B

P1-P3P4-P6
AH276Q
Document number: DS31066 Rev. 6 - 2
1 of 6
www.diodes.com
September 2013
© Diodes Incorporated
A
H276Q
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Description
AH276 are integrated Hall sensors with output drivers, mainly
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,
DOB).
While the magnetic flux density (B) is larger than operate point (Bop),
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
DO, DOB transfer each state.
For DC fan application, sometimes need to test power reverse
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
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)
Pin Assignments
276
12 43
1 : Vcc
2 : DO
3 : DOB
4 : GND
( Top View )
Applications
Dual-coil Brush-less DC Motor
Dual-coil Brush-less DC Fan
Revolution Counting
Speed Measurement
Notes: 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
Green
AH276Q
Document number: DS31066 Rev. 6 - 2
2 of 6
www.diodes.com
September 2013
© Diodes Incorporated
A
H276Q
Pin Descriptions
Pin Name P/I/O Pin # Function
V
CC
P 1 Power Supply Input
DO O 2 Output Pin
DOB O 3 Output Pin
GND P 4 Ground
Functional Block Diagram
1
REG.
Hall Plate
Amp
DO
GND
2
3
4
Vcc
DOB
Absolute Maximum Ratings (@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Rating Unit
V
CC
Supply Voltage 20 V
V
RCC
Reverse VCC Polarity Voltage -20 V
B Magnetic Flux Density Unlimited
Io
Output “on” Current
(Note 3)
Continuous 0.4
A Hold 0.5
Peak (Start Up) 0.7
Ts Storage Temperature Range -65 ~ +150
C
PD Package Power Dissipation (SIP-4L) 550 mW
T
J
Maximum Junction Temperature +150
C
JA
Thermal Resistance Junction-to-Ambient (SIP-4L) 227
C/W
JC
Thermal Resistance Junction-to-Case (SIP-4L) 49
C/W
Note: 3. P
D
shall be within Safety Operation Area.
T
J
T
A
JA
JC
Tc
AH276Q
Document number: DS31066 Rev. 6 - 2
3 of 6
www.diodes.com
September 2013
© Diodes Incorporated
A
H276Q
Recommended Operating Conditions (@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Conditions Min Max Unit
V
CC
Supply Voltage (Note 4) Operating 3.5 20 V
T
A
Operating Ambient Temperature Operating -20 +85
C
Note: 4. The output DO/DOB is switching as magnetic field change (S>300G, N<-300G).
Electrical Characteristics (@T
A
= +25°C, unless otherwise specified.)
Symbol Parameter Conditions Min Typ Max Unit
V
Z
Output Zener Breakdown — 35 — V
V
CE(SAT)
Output Saturation Voltage
V
CC
= 14V, I
L
= 400mA
—
0.6 0.9 V
I
CEX
Output Leakage Current
V
CE
= 14V, V
CC
= 14V
—
<0.1 10 µA
I
CC
Supply Current
V
CC
= 20V, Output Open
7 16 25 mA
Magnetic Characteristics (Note 5) (@T
A
= +25°C, V
CC
= 14V, unless otherwise specified.)
A grade
Symbol Characteristic Min Typ Max Unit
Bop Operate Point 10 — 50 Gauss
Brp Release Point -50 — -10 Gauss
Bhy Hysteresis — 75 — Gauss
B grade
Symbol Characteristic Min Typ Max Unit
Bop Operate Point 5 — 70 Gauss
Brp Release Point -70 — -5 Gauss
Bhy Hysteresis — 75 — Gauss
C grade
Symbol Characteristic Min Typ Max Unit
Bop Operate Point — — 100 Gauss
Brp Release Point -100 — — Gauss
Bhy Hysteresis — 75 — Gauss
Note: 5. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
Bhy
Vsat
Vcc
( Output Voltage )
Brp Bop
0
S
N
( Magnetic flux density B )
DO
Turn on
Turn off
( off-state )
( on-state )
Bhy
Vsat
Vcc
( Output Voltage )
Brp Bop
0
S
N
( Magnetic flux density B )
DOB
Turn oFF
Turn on
( off-state )
( on-state )
P1-P3P4-P6

AH276Q-PG-B-B

Mfr. #:
Buy AH276Q-PG-B-B
Manufacturer:
Diodes Incorporated
Description:
Board Mount Hall Effect / Magnetic Sensors HALL IC LATCH SW BI 3.5-20V 500mA
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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