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PDF EUM6261 Data sheet ( Hoja de datos )
| Número de pieza | EUM6261 | |
| Descripción | 1A /18V PWM Fan Motor Driver | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUM6261/6261A
1A /18V PWM Fan Motor Driver
DESCRIPTION
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.
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.
FEATURES
z Built in 18V Full-wave Fan Driver
z PWM Fan Speed Control
z Programmable Minimum Fan Speed
z Internal 10% Minimum Fan Speed Clamp
z Built in Soft Switching Function
z Built in Hall Bias
z Lock Protection and Auto Restart
z Fan Rotation Speed Feedback FG Output
z Fan Rotation Detection RD Output
z Thermal Shutdown Protection
z Available in TSSOP-16 Package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Personal Computer’s Power Supply Radiation
Fans and CPU Coolers
Application Circuit
www.DataSheet4U.com
DS6261/6261A Ver1.1 Oct. 2008
Figure 1. Typical Application Circuit
1
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet EUM6261.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EUM6261 | 1A /18V PWM Fan Motor Driver | Eutech Microelectronics |
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