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参数资料
| 型号： | AH291-YL-13 |
| 厂商： | Diodes/Zetex |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC HALL FAN CTRLR 400MA SOT-89-5 |
| 产品变化通告： | AH28x, AH29x Lead Obsolescence 07/June/2010 |
| 标准包装： | 2,500 |
| 应用： | 风扇控制器，无刷（BLDC） |
| 输出数： | 2 |
| 电流 - 输出： | 400mA |
| 电源电压： | 1.8 V ~ 5.75 V |
| 工作温度： | -20°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-89-5/6 |
| 供应商设备封装： | SOT-89-5 |
| 包装： | 带卷 (TR) |
AH291
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Description
Pin Assignments
AH291 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-collector
(Top View)
(Top View)
drivers for motor’s coil driving, automatic lock shutdown and
restart function relatively.
Rotor-lock shutdown detection circuit turns off the output
291
1 : Vdd
2 : DO
Vdd
GND
1
2
291
5 NC
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
3 : DOB
4 : GND
DO 3
74 DOB
blocked period. Until the blocking is removed, the motor
recovers and runs normally.
1 2 3
SIP-4L
4
SOT89-5L
The AH291 is available in SIP4 and SOT89-5L packages.
Features
Applications
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?
?
?
?
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On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Built-in Zener Protection for Output Driver
Operating Voltage: 1.8V to 5.75V
Output Current: I O(AVE) = 400mA
Packages: SIP-4L and SOT89-5L
Green Molding Compound
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Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
Typical Application Circuit (Note 1)
1.8V/5.75V
V dd
D2
D1
291
L2
L1
1
2
3
4
GND
C3
DO
DOB
Notes:
1. R1, R2: typical 56 Ohm
R1
R2
C1, C2, C3: typical 2.2μF
The R, C value need to be fine tuned based on coils design.
1.8V/5.75V Brush-Less DC Fan
C1
C2
AH291
Document number: DS31041 Rev. 8 - 2
1 of 9
June 2010
? Diodes Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AH291-YL-B | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER |
| AH291Y-PL | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Low Voltage Hall-Effect Smart Fan Motor Controller |
| AH291Y-PLA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Low Voltage Hall-Effect Smart Fan Motor Controller |
| AH291Y-WL | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Low Voltage Hall-Effect Smart Fan Motor Controller |
| AH291Y-WLA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Low Voltage Hall-Effect Smart Fan Motor Controller |
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