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EUM6862 参数 Datasheet PDF下载

EUM6862图片预览
型号: EUM6862
PDF下载: 下载PDF文件 查看货源
内容描述: 24V PWM风扇电机驱动器 [24V PWM Fan Motor Driver]
分类和应用: 驱动器风扇电机
文件页数/大小: 2 页 / 268 K
品牌: EUTECH [ EUTECH MICROELECTRONICS INC ]
 浏览型号EUM6862的Datasheet PDF文件第2页  
EUM6862/A/B
24V PWM Fan Motor Driver
DESCRIPTION
EUM6862/A/B is a fan motor driver for the single coil
brushless DC motor. With its high efficient direct
PWM control mode, EUM6862/A/B controls the speed
of brushless DC motor with a built in HALL IC
interface. EUM6862/A/B is suitable to drive variable
speed motors for personal computer’s power supply
radiation fans and CPU coolers.
EUM6862/A/B integrates PWM fan speed control,
minimum speed mode, soft start, 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. EUM6862/A/B can
set minimum fan speed by presetting RMIN voltage.
With soft start function, EUM6862/A/B can drive
motor from slow speed to fast speed in a settable time
by setting the external capacitor between SS and GND.
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,
EUM6862/A/B shuts off power devices for a few
seconds. The lock protection delay time is externally
programmable by a capacitor. EUM6862 has built in
motor rotation speed feedback (FG) output, motor
rotation detection (RD) output and Hall sensor bias
output.
FEATURES
Built in 24V Full-wave Motor Driver for Fan
Motor
Built in Kickback Voltage Protection, No Zener
Diode Need
External Programmable Soft Start and Soft
Restart Function
Wide Input Range 3V~28V
PWM Fan Speed Control
Programmable Minimum Fan Speed
Built in Soft Switching Function
Built in Hall Bias
Lock Protection and Auto Restart
Fan Rotation Speed Feedback FG Output
(EUM6862/B)
Fan Rotation Detection RD Output
(EUM6862/A)
Thermal Shutdown Protection
Available in TSSOP-16 and TDFN-14 Packages
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
PC/Server Fan Motor, CPU Coolers and Printer
Cooling Fan
Application Circuit
Figure 1. TSSOP -16 24V and 12V Typical Application Circuit
DS6862/A/B
Ver1.4 Jun. 2011
1