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PDF EUM6270 Data sheet ( Hoja de datos )
| Número de pieza | EUM6270 | |
| Descripción | 1.2A/18V PWM Fan Motor Driver | |
| Fabricantes | Eutech Microelectronics | |
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EUM6270
1.2A/18V PWM Fan Motor Driver
DESCRIPTION
EUM6270 is a PWM fan motor driver for single coil
brushless DC motor. With its high efficient direct
PWM control mode, EUM6270 controls the speed of
brushless DC motor. It builds in an interface between a
HALL IC and a single coil motor. EUM6270 is
suitable for variable speed control motor for personal
computer’s power supply radiation fans and CPU
coolers.
The EUM6270 functions include PWM control mode,
minimum speed mode, fan tachometer, soft switching,
lock protection, auto restart, current limit and Hall
Bias.
PWM mode controls internal power devices in low
noise and low vibration fashion. Minimum speed mode
makes the lowest speed of motor settable. If the motor
is stalled by external force or obstacles, overdrive
current may incur coil overheat and burning. To
prevent motor from overheating, the lock protection
circuit will shut down the internal power devices for a
few seconds after motor is locked up. Then auto restart
circuit resumes to power up. The protection and power
up time are settable by external capacitor. When the
voltage drop between VCC and VM is higher than
0.48V (Typ.), the EUM6270 outputs will be turned off
by current limit function. EUM6270 has motor rotation
speed feedback (FG) output and Hall sensor bias
output.
FEATURES
z Built in 18V Full-wave Fan Driver
z PWM Control Mode
z Built in Soft Switching Function
z Built in Hall Bias
z Settable Minimum Speed Mode
z Lock Protection and Auto Restart
z FG Output
z Current Limit Protection
z Thermal Shutdown Protection
z Available in TSSOP-20 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
DS6270 Ver1.0 Nov. 2008
Figure 1. Typical Application Circuit
1
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| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet EUM6270.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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