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参数资料
| 型号： | AH285-YL-13 |
| 厂商： | Diodes/Zetex |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC HALL FAN CTRLR 500MA SOT89-5L |
| 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： | 500mA |
| 电源电压： | 3.8 V ~ 20 V |
| 工作温度： | -40°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) |
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Description
The AH285 is a single-chip solution for driving two-coil
brushless direct current (BLDC) fans and motors. The device
includes a Hall-effect sensor, dynamic offset correction and
Pin Assignments
(Top View)
two complementary open-drain output drivers with internal
Vdd
1
5 FG
Zener diode protection.
To help protect the motor coils, the AH285 provides Rotor
GND
2
285
Lock Protection which shuts down output drives if rotor lock is
detected. The device automatically re-starts when the rotor
lock is removed.
A Tachometer output is provided by open-drain Frequency
Generator (FG) Pin which allows external interface to monitor
motor rotation or speed. The FG output is the magnetic
change frequency.
The AH285 is available in SOT89-5L package.
Features
DO 3
Applications
SOT89-5L
74 DOB
?
?
?
?
?
Single-chip solution
Operating Voltage: 3.8V to 20V
Built-in Hall sensor and input amplifier
Tachometer (FG) output
Rotor Lock Protection (Lock detection, output shutdown
?
?
Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
and automatic re-start)
?
?
?
?
Built-in Zener protection for output driver
Average output current up to 500mA
Packaged in SOT89-5L
Green Molding Compound
Typical Application Circuit
Vdd (12V)
D2
FG
D1 R pu
5
285
4
Coil2
1
2
3
Coil1
D3
C3
GND
R1
C1
R2
C2
12V DC Brush-less Fan with FG output function
Notes:
1. Typically it is recommended to us a 56 Ohm resistor for R1 and R2 and a 2.2 μ F E-Cap capacitor for C1, C2 and C3. These values
may need to be optimized depending on the coils used.
To help with IC protection it’s advised to add a Zener diode between Vdd and ground. The Zener diode should be chosen to help
prevent the supply voltage exceeding the maximum rating of the device.
AH285
Document number: DS31029 Rev. 8 - 2
1 of 9
June 2010
? Diodes Incorporated
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| AH285-YL-13 | IC HALL FAN CTRLR 500MA SOT89-5L |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AH285-YL-7 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:HALL-EFFECT SMART FAN MOTOR CONTROLLER |
| AH285-YLA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
| AH285-YL-B | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:HALL-EFFECT SMART FAN MOTOR CONTROLLER |
| AH285Y-PL | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
| AH285Y-PLA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
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