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参数资料
| 型号： | AH284-PL-B |
| 厂商： | Diodes Inc |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC HALL FAN CTRLR 500MA 4-SIP |
| 标准包装： | 1,000 |
| 应用： | 风扇控制器，无刷（BLDC） |
| 输出数： | 1 |
| 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： | 通孔 |
| 封装/外壳： | 4-SIP |
| 供应商设备封装： | 4-SIP |
| 包装： | 散装 |
| 其它名称： | AH284-PL-BDI |
AH284
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Description
Pin Assignments
The AH284 is a single-chip solution for driving two-coil
brushless direct current (BLDC) fans and motors. The device
(Top View)
(Top View)
includes a Hall-effect sensor, dynamic offset correction and
two complementary open-drain output drivers with internal
Zener diode protection.
284
1 : Vdd
2 : DO
Vdd
GND
1
2
284
5 NC
To help protect the motor coils, the AH284 provides Rotor
Lock Protection which shuts down output drives if rotor lock is
3 : DOB
DO 3
74 DOB
detected. The device automatically re-starts when the rotor
lock is removed.
1 2 3
SIP-4L
4
4 : GND
SOT89-5L
The AH284 is available in SIP4 and SOT89-5L packages.
Features
Applications
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Single-chip solution
Operating Voltage: 3.8V to 20V
Built-in Hall sensor and input amplifier
Rotor Lock Protection (Lock detection, output shutdown
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Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
and automatic re-start)
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Built-in Zener protection for output driver
Average output current up to 500mA
Packages: SIP-4L and SOT89-5L
Green Molding Compound
Typical Application Circuit (Note 1)
12V
V dd
D2
D1
284
L2
L1
1
2
3
4
GND
D3
C3
DO
DOB
R1
C1
R2
C2
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.
AH284
Document number: DS31051 Rev. 11 - 2
1 of 10
June 2010
? Diodes Incorporated
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AH284P-PL | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
| AH284P-PLA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
| AH284P-WL | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
| AH284P-WLA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:Hall-Effect Smart Fan Motor Controller |
| AH284P-YL | 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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