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PDF AH291 Data sheet ( Hoja de datos )
| Número de pieza | AH291 | |
| Descripción | LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER | |
| Fabricantes | Diodes Incorporated | |
| Logotipo |  |
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Features
AH291
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
• On Chip Hall Sensor
• Rotor-Locked Shutdown
• Automatically Restart
• Built-in Zener Protection for Output Driver
• Operating Voltage: 1.8V~5.75 V
• Output Current: IO(AVE) = 400 mA
• Lead Free Packages: SIP-4L and SOT89-5L
AH291 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-collector drivers
for motor’s coil driving, automatic lock shutdown and restart
function relatively.
Rotor-lock shutdown detection circuit turns off the output driver
when the rotor is blocked to avoid coil overheat. Then, the
automatic recovery circuit will restart the motor. These protected
actions are repeated and periodic during the blocked period. Until
the blocking is removed, the motor recovers and runs normally.
Ordering Information
AH291 - X X X
Package
Lead
P: SIP-4L L : Lead Free
Y: SOT89-5L
Packing
-B : Bulk
-7/-13 : Taping
Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
Package Packaging
Code
(Note 2)
AH291-P
Lead-free
P
SIP-4L
AH291-Y Y SOT89-5L
Lead-free
Tube/Bulk
Quantity
Part Number
Suffix
1000
-B
NA NA
7” Tape and Reel
Quantity
Part Number
Suffix
NA NA
2500/Tape & Reel
-13
Note: 2. 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.
AH291 Rev. 3
1 of 10
www.diodes.com
JANUARY 2007
© Diodes Incorporated
1 page  
AH291
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Magnetic Characteristics ( TA = 25 °C, Vdd = 5V, unless otherwise specified )
Characteristics
Operation Point
Release Point
Hysteresis
Symbol
Bop
Brp
Bhy
Min.
--
-60
--
Typ.
30
-30
60
( 1mT = 10 Gauss )
Max.
Unit
60 Gauss
-- Gauss
-- Gauss
Operating Characteristics
DOB
RP 12 OFF
10
8
6
4
ON 2 OP
VSAT
Brp 0
Bop
M agnetic Flux D ensity in G auss
DO
OFF
RP
12 OP
10
8
6
4
2 ON
VSAT
Brp 0
Bop
M agnetic Flux D ensity in G auss
SS
Marking
side
Marking
side
N
( SIP4 )
N
( SOT89-5 )
AH291 Rev. 3
5 of 10
www.diodes.com
JANUARY 2007
© Diodes Incorporated
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AH291.PDF ] | |
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