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PDF BD6989FVM Data sheet ( Hoja de datos )
| Número de pieza | BD6989FVM | |
| Descripción | Single-Phase Full-Wave Motor Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de BD6989FVM (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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TECHNICAL NOTE
DC Brushless Motor Driver Series for Cooling Fans
Low-voltage Single-phase Full-wave
DC Brushless Fan Motor Drivers
BH6766FVM, BD6989FVM, BH6799FVM, BH6789FVM
●Description
This is the summary of models that suit for notebook PC cooling fan. They employ Bi-CMOS and Bi-CDMOS process, and
realize low ON resistor, low power consumption, and quiet drive. They also incorporate lock protection and automatic
restart circuit which does not require external capacitor.
●Features
1) Soft switched drive
2) Incorporating lock protection and automatic restart circuit(BD6989FVM、BH6799FVM、BH6789FVM)
3) Rotating speed pulse signal (FG) output (BD6989FVM、BH6799FVM、BH6766FVM)
4) Lock alarm signal (AL) output (BH6789FVM)
5) PWM speed control (BD6989FVM)
6) MSOP8 compact package
●Applications
For compact 5V fan such as notebook PC cooling fan
●Lineup
Low voltage
single-phase full wave
PWM speed control
Lock protection circuit
incorporated
FG output BD6989FVM
PWM speed control
not available
Lock protection circuit
incorporated
Lock protection circuit
not incorporated
FG output BH6799FVM
AL output BH6789FVM
FG output BH6766FVM
Jan. 2007
1 page  
●Reference Data
◎BD6989FVM
6.0 BD6989FVM
95℃
5.0
4.0 25℃
-40℃
3.0
2.0
1.0
0.0
0
Operating Voltage Range
2468
Supply voltage, Vcc[V]
Fig.1 Circuit current
10
1.0 BD6989FVM
0.8
0.6
95℃
0.4
0.2 25℃
-40℃
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6
Output current, Io[A]
Fig.4 Output L voltage
0.7
BD6989FVM
20
15
95℃
10 25℃
-40℃
5
0
-5 -40℃
25℃
-10
95℃
-15 Operating Voltage Range
-20
0
2468
Supply voltage, Vcc[V]
10
Fig.7 Input hysteresis voltage
◎BH6799FVM/BH6789FVM
6 BH6799FVM/BH6789FVM
5
105℃
4 25℃
3 -40℃
2
1
Operating Voltage Range
0
02468
Supply voltage, Vcc[V]
Fig.10 Circuit current
3.0 BD6989FVM
2.5
-40℃
2.0
25℃
1.5
95℃
1.0
0.5 Operating Voltage Range
0.0
0 2 4 6 8 10
Supply voltage, Vcc[V]
Fig.2 PWM input H level
0.0 BD6989FVM
-0.2
-40℃
-0.4
-0.6
25℃
95℃
-0.8
-1.0
0.0
0.1 0.2 0.3 0.4 0.5 0.6
Output current, Io[A]
Fig.5 Output H voltage
0.7
0.60 BD6989FVM
0.58
0.55
0.53
0.50 95℃
25℃
0.48 -40℃
0.45
0.43 Operating Voltage Range
0.40
02468
Supply voltage, Vcc[V]
Fig.8 Lock detection ON time
10
1.0 BH6799FVM/BH6789FVM
0.8
0.6
105℃
0.4
25℃
0.2
-40℃
0.0
0.0
0.1 0.2 0.3 0.4 0.5 0.6
Output current, Io[A]
Fig.11 Output L voltage
0.7
5/16
BD6989FVM
3.0
2.5
2.0
-40℃
1.5
25℃
1.0
95℃
0.5 Operating Voltage Range
0.0
0 2 4 6 8 10
Supply voltage, Vcc[V]
Fig.3 PWM input L level
BD6989FVM
0.20
0.15 2.9V
5V
0.10
8V
0.05
0.00
0
2468
FG current, IFG[mA]
Fig.6 FG low voltage
10
6.00 BD6989FVM
5.75
5.50
5.25
5.00 95℃
25℃
4.75 -40℃
4.50
4.25 Operating Voltage Range
4.00
0 2 4 6 8 10
Supply voltage, Vcc[V]
Fig.9 Lock detection OFF time
0.0 BH6799FVM/BH6789FVM
-40℃
-0.2
-0.4
25℃
105℃
-0.6
-0.8
-1.0
0.0
0.1 0.2 0.3 0.4 0.5 0.6
Output current, Io [A]
Fig.12 Output H voltage
0.7
5 Page 
4) PWM input ＜BD6989FVM＞
Rotation speed of motor can be changed by controlling ON/OFF of the upper output depending on duty of the signal
input to PWM terminal.
H+
PWM
OUT1
OUT2
FG
Fig.30 Timing chart in PWM control
When the voltage input to PWM terminal applies H logic : normal operation
L logic : H side output is off
When PWM terminal is open, H logic is applied.
PWM terminal has hysteresis of 400mV (typ.).
●Equivalent circuit
Resistance is a typical value.
◎BD6989FVM
1) Hall input terminal, Motor output terminal
Vcc
500Ω
H+
H-
500Ω
2)PWM signal input terminal
Vcc
90kΩ
PWM
10kΩ
150kΩ
150kΩ
Vcc
1kΩ
1kΩ
GND
OUT1
OUT2
◎BH6799FVM/BH6789FVM/ BH6766FVM
1) Hall input terminal, Motor output terminal
Vcc
500Ω
H+
H-
500Ω
1kΩ
1kΩ
150kΩ
150kΩ
Vcc
OUT1
GND
OUT2
11/16
3)FG output terminal
FG
2) Hall bias terminal
Vcc
HB
3) FG output terminal or
AL output terminal
FG
or
AL
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet BD6989FVM.PDF ] | |
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