参数资料
型号: AH292-YL-13
厂商: Diodes/Zetex
文件页数: 1/8页
文件大小: 0K
描述: IC HALL FAN CTRLR 400MA SOT89-5
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)
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Description
AH292 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-collector
Pin Assignments
(Top View)
transistors for motor’s coil driving, automatic lock current
shutdown, and recovery protections. In addition a Frequency
Vdd
1
5 FG
generator (FG) output is also available for speed detection.
Rotor-lock shutdown detection circuit turns off the output
GND
2
292
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.
The AH292 is available in SOT89-5L package.
Features
DO 3
Applications
SOT89-5L
74 DOB
?
?
?
?
?
?
?
?
?
On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Frequency Generator (FG) Output
Built-in Zener Protection for Output Driver
Operating Voltage: 1.8V to 5.75V
Output Current: I O(AVE) = 400mA
Packaged in SOT89-5L
Green Molding Compound
?
?
Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
Typical Application Circuit (Note 1)
D2
Vdd
(1.8V/5.75V)
R pu
292
D1
Coil 2
Coil 1
1
2
3
4
5
FG
GND
C3
R1
R2
Notes:
1. R1, R2: typical 56 Ohm
C1, C2, C3: typical 2.2μF
C1
C2
The R, C value need to be fine tuned based on coils design.
1.8V/5.75V DC Brush-less Fan with FG output function
AH292
Document number: DS31049 Rev. 7 - 2
1 of 8
June 2010
? Diodes Incorporated
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