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PDF BD6701F Data sheet ( Hoja de datos )
| Número de pieza | BD6701F | |
| Descripción | Two-phase Full-wave DC Brushless Fan Motor Drivers | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
DC Brushless Motor Drivers for Cooling Fans
Two-phase Full-wave
DC Brushless Fan Motor Drivers
BD6701F
General description
BD6701F is two-phase half-wave fan motor 1 chip driver
that composes 2 Nch power DMOS FET.
This driver incorporates lock protection, automatic restart
circuit and FG/AL output.
Package
SOP-8
W (Typ.) x D (Typ.) x H (Max.)
5.00mm x 6.20mm x 1.71mm
Features
Power Tr incorporated
Incorporates reverse connection protection diode
Incorporates lock protection and automatic restart
circuit
Rotation speed pulse signal (FG) output
Lock alarm signal (AL) output
SOP8
Application
For desktop PC, server, general consumer equipment, communication equipment and industrial equipment.
Absolute maximum ratings
Parameter
Symbol
Limit
Supply voltage
Power dissipation
Vcc 36
Pd 780 *1
Operating temperature range
Topr -40 +100
Storage temperature range
Output current
Tstg
Iomax
-55 +150
800 *2
AL signal output current
IAL 10
AL signal output voltage
VAL 36
FG signal output current
IFG 10
FG signal output voltage
VFG
36
Junction temperature
Tjmax
150
*1 Reduce by 6.24mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
*2 This value is not to exceed Pd.
Unit
V
mW
mA
mA
V
mA
V
Recommended operating conditions
Parameter
Operating supply voltage range
Hall input voltage range
Symbol
Vcc
VH
Limit
6.0 28.0
0 Vcc-3.0
Unit
V
V
Product structure Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product is not designed protection against radioactive rays
1/13
TSZ02201-0H1H0B100510-1-2
18.DEC.2012 Rev.002
1 page  
BD6701F
Typical performance curves(Reference data)
Datasheet
0.60 6.0
0.55 5.5
0.50
0.45
0.40
0
100°C
25°C
-40°C
Operating range
6 12 18 24
Supply voltage,Vcc [V]
Fig.7 Lock detection ON time
5.0
4.5
4.0
30 0
100°C
25°C
-40°C
Operating range
6 12 18 24
Supply voltage, Vcc [V]
Fig.8 Lock detection OFF time
30
0.20 0.20
0.15
0.10
0.05
100°C
25°C
-40°C
0.15
0.10
0.05
0.00
0
2468
FG/AL current, IFG/IAL [mA]
Fig.9 FG/AL output L voltage
(Temperature characteristics)
0.00
10 0
2468
FG/AL current, IFG/IAL [mA]
10
Fig.10 FG/AL output L voltage
(Voltage characteristics)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
5/13
TSZ02201-0H1H0B100510-1-2
18.DEC.2012 Rev.002
5 Page 
BD6701F
Datasheet
4) Problem of GND line PWM switching
Do not perform PWM switching of GND line because GND terminal potential cannot be kept to a minimum.
Vcc
Motor
Driver
GND
PWM input
Controller
Prohibite
Fig.19 GND Line PWM switching prohibited
Calculation of power consumption by IC
Power consumption of this IC is approximately calculated as follows:
Pc=Pc1+Pc2+Pc3
Pc1 Power consumption by circuit current
Pc1=Vcc Icc
Pc2 Power consumption on output stage
Pc2=VOL Io
VOL is the L voltage of output terminal 1 and 2.
Io is the current flowing to output terminal 1 and 2.
Pc3 Power consumption at FG and AL
Pc3=VFG IFG VAL IAL
VFG is L voltage of FG output.
VAL is L voltage of AL output.
IFG and IAL are the current of FG and AL.
Vcc
Icc
FG
IFG
OUT1
OUT2
Io
Fig.20 Calculation of power consumption by IC
Power consumption by IC greatly changes with use condition of IC such as power supply voltage and output current.
Consider thermal design so that the maximum power dissipation on IC package is not exceeded.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
11/13
TSZ02201-0H1H0B100510-1-2
18.DEC.2012 Rev.002
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet BD6701F.PDF ] | |
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