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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。 |
部品番号 | AH288 |
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部品説明 | HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER | ||
メーカ | Diodes Incorporated | ||
ロゴ | |||
このページの下部にプレビューとAH288ダウンロード(pdfファイル)リンクがあります。 Total 9 pages
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 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
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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PDF ダウンロード | [ AH288 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
AH284 | Hall-Effect Smart Fan Motor Controller | ETC |
AH284 | HALL-EFFECT SMART FAN MOTOR CONTROLLER | Diodes Incorporated |
AH285 | HALL-EFFECT SMART FAN MOTOR CONTROLLER | Diodes Incorporated |
AH285 | Hall-Effect Smart Fan Motor Controller | Anachip |