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Eutech Microelectronics

EUM6189A Datasheet Preview

EUM6189A Datasheet

700mA PWM Fan Motor Driver

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EUM6189A
700mA PWM Fan Motor Driver
DESCRIPTION
EUM6189A is designed specifically for electronic
commutation of single coil brushless DC motor
applications. It is intended to be used as an interface
between a HALL IC and a single coil motor. The
functions built in EUM6189A are soft switched drive
mode, PWM speed control mode, fan tachometer, lock
detection, automatic restart and thermal shut-down.
Soft switched drive mode makes the output signal
gentle when the amplitude of HALL signal is small.
Oppositely, it makes the output signal steep when the
amplitude of HALL signal is big. PWM speed control
mode makes EUM6189A possible to change motor
rotation speed by switching upper side power device. If
the motor is stalled by external force or obstacles,
overdrive current may incur coil overheat/burning. To
prevent this, lock detection circuit can shut down the
driver for 5 seconds after motor lockup. Then
automatic restart circuit will try to power up the driver
for 500ms every 5 seconds.
EUM6189A has FG output.
FEATURES
z Single-Phase Full-Wave driver System
z Soft switched drive
z PWM speed control mode
z Lock detection, Automatic restart
z Tachometer Output
FG output
z Thermal Shutdown Protection
z Available in MSOP-8 Package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z NB FAN Motor
Application Circuit and Block Diagram
DS6189A Ver 1.1 Apr. 2008
Figure 1.Application Circuit and Block Diagram
1




Eutech Microelectronics

EUM6189A Datasheet Preview

EUM6189A Datasheet

700mA PWM Fan Motor Driver

No Preview Available !

Pin Configurations
Package Type
EUM6189ATel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
Pin Configurations
MSOP-8
Pin Description
NAME
OUT2
VCC
H+
H-
FG
PWM
OUT1
GND
PIN
1
2
3
4
5
6
7
8
DESCRIPTION
Motor output terminal
Power supply terminal
Hall input terminal
Hall input terminal
Output pin of fan tachometer (open-drain )
PWM control terminal
Motor output terminal
GROUND terminal
Power Dissipation
Figure 2. Power Dissipation
To use at temperature above Ta=25 reduce 4.68mW/
(On 70.0mn×70.0mn×1.6mm glass epoxy board)
DS6189A Ver 1.1 Apr. 2008
2


Part Number EUM6189A
Description 700mA PWM Fan Motor Driver
Maker Eutech Microelectronics
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EUM6189A Datasheet PDF






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