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EUM6261

更新时间: 2024-10-28 12:49:55
品牌 Logo 应用领域
德信 - EUTECH 驱动器风扇电机
页数 文件大小 规格书
1页 103K
描述
1A /18V PWM Fan Motor Driver

EUM6261 数据手册

  
EUM6261/6261A  
1A /18V PWM Fan Motor Driver  
DESCRIPTION  
FEATURES  
EUM6261/6261A is a fan motor driver for the single  
coil brushless DC motor. With its high efficient direct  
PWM control mode, EUM6261/6261A controls the  
speed of brushless DC motor with a built in HALL IC  
interface. EUM6261/6261A is suitable to drive  
variable speed motors for personal computer’s power  
supply radiation fans and CPU coolers.  
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Built in 18V Full-wave Fan Driver  
PWM Fan Speed Control  
Programmable Minimum Fan Speed  
Internal 10% Minimum Fan Speed Clamp  
Built in Soft Switching Function  
Built in Hall Bias  
Lock Protection and Auto Restart  
Fan Rotation Speed Feedback FG Output  
Fan Rotation Detection RD Output  
Thermal Shutdown Protection  
EUM6261/6261A integrates PWM fan speed control,  
minimum speed mode, fan tachometer, lock protection,  
auto restart and Hall Bias functions. PWM mode  
controls fan speed in low noise and low vibration ways  
by adjusting RCTL voltage. EUM6261/6261A can set  
minimum fan speed by presetting RMIN voltage.  
EUM6261/6261A internally limits to the 10% lowest  
fan speed. If a fan motor is stalled by the external force  
or obstacles, overdrive current may incur coil overheat  
and burning. To prevent motor from overheating, the  
lock protection circuit shuts down the internal power  
devices for a few seconds after the motor lock is  
detected. Then the auto restart circuit resumes to power  
up the internal power devices. If the lock persists,  
EUM6261/6261A shuts off power devices for a few  
seconds. The lock protection delay time is externally  
programmable by a capacitor. EUM6261/6261A has  
built in motor rotation speed feedback (FG) output,  
motor rotation detection (RD) output and Hall sensor  
bias output.  
Available in TSSOP-16 Package  
RoHS Compliant and 100% Lead (Pb)-Free  
APPLICATIONS  
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Personal Computer’s Power Supply Radiation  
Fans and CPU Coolers  
Application Circuit  
Figure 1. Typical Application Circuit  
DS6261/6261A Ver1.1 Oct. 2008  
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