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AH288 の電気的特性と機能

AH288のメーカーはDiodes Incorporatedです、この部品の機能は「HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER」です。


製品の詳細 ( Datasheet PDF )

部品番号 AH288
部品説明 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
メーカ Diodes Incorporated
ロゴ Diodes Incorporated ロゴ 




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AH288 Datasheet, AH288 PDF,ピン配置, 機能
Features
AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
On chip Hall sensor
Rotor-locked shutdown
Automatically restart
Frequency generator (FG) output
Built-in Zener protection for output driver
Operating voltage: 3.8V~28V
Output current: IO(AVE) = 400mA
Lead Free Package: SOT89-5L (Note 1)
SOT89-5L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 2)
AH288 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-drain transistors
as motor coil drivers, automatic lock current shutdown, and
recovery protections. Additional, frequency generator (FG) output
is for speed detection 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.
Typical Application Circuit
Vdd (24V)
D2
D1 Rpu
FG
D3 C1
* Rpu : typical 10 Kohm
54
288
123
GND
Coil2
Coil1
48V
48V
Note: The optional Capacitor C1 and Diode D3 are for power stabilization. C1 is recommended to
be E-Cap., luF/25V; D3 is recommended to be Zener Diode, VZ =27V. Which C1and D3
value need to be fine tuned to optimize design for different coils and power suppliers .
24V DC Brush-less Fan with FG output function
AH288 Rev. 12
DS31040
1 of 9
www.diodes.com
APRIL 2010
© Diodes Incorporated

1 Page





AH288 pdf, ピン配列
Block Diagram
AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Vdd
2
Regulator
Hall
Plate
Amp.
Lock shutdown
and
Automatic recovery
Control Logic
DO
DOB
GND
1
FG
AH288 Rev. 12
DS31040
3 of 9
www.diodes.com
APRIL 2010
© Diodes Incorporated


3Pages


AH288 電子部品, 半導体
AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Operating Characteristics
DOB
DO
RP 24 OFF
20
16
12
8
ON 4 OP
Vsat
Brp 0
Bop
Magnetic Flux Density in Gauss
OFF
RP
24 OP
20
16
12
8
4 ON
Vsat
Brp 0
Bop
Magnetic Flux Density in Gauss
S
Marking
side
N
( SOT89-5L )
AH288 Rev. 12
DS31040
6 of 9
www.diodes.com
APRIL 2010
© Diodes Incorporated

6 Page



ページ 合計 : 9 ページ
 
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[ AH288 データシート.PDF ]


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共有リンク

Link :


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