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Número de pieza | AH266 | |
Descripción | HIGH VOLTAGE HALL EFFECT LATCH | |
Fabricantes | Diodes | |
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AH266
HIGH VOLTAGE HALL EFFECT LATCH
Description
AH266 is an integrated Hall sensor with output drivers designed for
electronic commutation of brush-less DC motor applications. The
device includes an on-chip Hall voltage generator for magnetic
sensing, a comparator that amplifies the Hall voltage, a Schmitt
trigger to provide switching hysteresis for noise rejection, and
complementary Darlington open-collector drivers for sinking large
current loads. An internal band-gap regulator is used to provide
temperature compensated supply voltage for internal circuits and
allows a wide operating supply range.
If a magnetic flux density (B) is larger than operation point (Bop), DO
will turn on (low) and DOB will turn off (high). The output state is
latched prior to reaching release point (Brp). If B< Brp, DO will turn off
and DOB will turn on. AH266 is rated for operation over temperature
range from -20°C to +85°C and voltage range from 4V to 28V. The
devices are available in low cost die forms or rugged 4 pin SIP
packages.
Pin Assignments
( Top View )
266
12 3 4
SIP-4
Features
On-Chip Hall Plate
Operating Voltage: 4V to 28V
Output Current: 400mA (Continuous, +25°C)
Reverse Protection Diode Only for Chip Reverse Power
Connecting (Note 1)
Output Protection Zener Breakdown VZ = 62V (Typ.)
Lead Free package: SIP-4
SIP-4: Available in “Green” Molding Compound (No Br, Sb)
RoHS Compliant (Note 2)
Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Dual-Coil Brushless DC Motor
Dual-Coil Brushless 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
266
123 4
Vcc
Coil 1 Coil 2
AH266
Document number: DS30876 Rev. 5 - 2
Brush-Less DC Fan
1 of 7
www.diodes.com
December 2013
© Diodes Incorporated
1 page Performance Characteristics
TA (C)
PD (mW)
TA (C)
PD (mW)
25 50
550 440
105 110
198 176
PD (mW)
600
500
400
300
200
100
0
0
15 30
60 70 80 85 90 95
396 352 308 286 264 242
115 120 125 130 135 140
154 132 110
88
66
44
Power Dissipation Curve
45 60 75 8590 105 120 135 150
TA (°C)
AH266
100
220
150
0
Ordering Information
Device
Package
Code
Packaging
(Note 8)
Quantity
Bulk
Part Number Suffix
AH266K-PG-B-A
P
SIP-4
1000
-B
AH266K-PG-B-B
P
SIP-4
1000
-B
Note:
8. For packaging details, go to our website at http://www.diodes.com/products/packages.html
Magnetic
Characteristics
A
B
Marking Information
Part Number
AH266
Document number: DS30876 Rev. 5 - 2
( Top View )
266X
Y WW X
X : Version : K
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
5 of 7
www.diodes.com
December 2013
© Diodes Incorporated
5 Page |
Páginas | Total 7 Páginas | |
PDF Descargar | [ Datasheet AH266.PDF ] |
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