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Rohm Semiconductor Electronic Components Datasheet

BD6975FV Datasheet

Multifunction Single-phase Full-wave Fan Motor Driver

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BD6975FV pdf
Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD6975FV
General description
BD6975FV is a 1chip driver that composes H-bridge of
power DMOS FET. Moreover, it corresponds to the large
current motor, compared with old drivers, because the
regenerative method of motor current and the driving
block are optimized.
Package
SSOP-B14
W (Typ.) x D (Typ.) x H (Max.)
5.00mm x 6.40mm x 1.35mm
Features
„ SSOP small package
„ Driver including power DMOS FET
„ Speed controllable by DC / direct PWM input
„ Hi-Eff switching
„ Quick start
„ Current limit
„ Lock protection and automatic restart
„ Rotation speed pulse signal (FG) output
SSOP-B14
Application
„ Fan motors for general consumer equipment of desktop PC, and Projector, etc.
Absolute maximum ratings
Parameter
Symbol
Limit
Supply voltage
Power dissipation
Vcc 20
Pd 874.7 *1
Operating temperature range
Topr –40 to +100
Storage temperature range
Tstg –55 to +150
Output voltage
Output current
Vo 20
Io 1.2 *2
Rotation speed pulse signal (FG) output voltage
Vfg
20
Rotation speed pulse signal (FG) output current
Ifg
10
Reference voltage (REF) output current
Hall bias (HB) output current 1
Hall bias (HB) output current 2
Iref
Ihb1
Ihb2
5
12 *3
5 *4
Input voltage (H+, H–, TH, MIN, CS, LZST)
Vin
7
Junction temperature
Tj 150
*1 Reduce by 7.0mW/°C over Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
*2 This value is not to exceed Pd.
*3 The condition of Ta=0°C or more and Vcc=9V or more
*4 The condition of less than Ta=0°C and less than Vcc=9V
Unit
V
mW
°C
°C
V
A
V
mA
mA
mA
mA
V
°C
Recommended operating conditions
Parameter
Operating supply voltage range
Operating input voltage range 1 (H+, H–)
(more than Vcc=9V)
Operating input voltage range 1 (H+, H–)
(less than Vcc=9V)
Operating input voltage range 2
(TH, MIN, CS, LZST)
Symbol
Vcc
Vin1
Vin2
Limit
3.5 to 17.0
0 to 7
0 to Vcc–2
0 to Vref
Unit
V
V
V
V
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/13
TSZ02201-0H1H0B100220-1-2
28.JUL.2012 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BD6975FV Datasheet

Multifunction Single-phase Full-wave Fan Motor Driver

No Preview Available !

BD6975FV pdf
BD6975FV
Datasheet
Pin configuration
FG
H–
HB
H+
CS
OUT2
RNF
1
2
3
4
5
6
7
(TOP VIEW)
14 GND
13 LZST
12 MIN
11 TH
10 REF
9 Vcc
8 OUT1
Fig.1 Pin configuration
Pin description
P/No. T/Name
1 FG
2 H–
3 HB
4 H+
5 CS
6 OUT2
7 RNF
8 OUT1
9 Vcc
10 REF
11 TH
12 MIN
13 LZST
14 GND
Function
Speed pulse signal output terminal
Hall – input terminal
Hall bias terminal
Hall + input terminal
Output current detection terminal
Motor output terminal 2
Output current detecting resistor
connecting terminal (motor ground)
Motor output terminal 1
Power supply terminal
Reference voltage output terminal
Output duty controllable input terminal
Minimum output duty setting terminal
Regenerative period setting terminal
Ground terminal (signal ground)
Block diagram
1 FG
2 H–
3 HB
SIGNAL
OUTPUT
H AL L
AMP
H AL L
COMP
HALL
BIAS
4 H+
Vcl
LOCK
PROTECT
5 CS
CURRENT
LIMIT COMP
6 OUT2
Hi-Eff
SWITCHING
TSD GND 14
LZST 13
QUICK
START
CONTROL
LOGIC
PWM
COMP
MIN 12
PWM
COMP
OSC
PRE-
DRIVER
REF
TH 11
REF 10
Vcc 9
7 RNF
OUT1 8
Fig.2 Block diagram
I/O truth table
Hall input
Driver output
H+ H– OUT1 OUT2
HL LH
L HH
H; High, L; Low, Hi-Z; High impedance
FG output is open-drain type.
L
FG
Hi-Z
L
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/13
TSZ02201-0H1H0B100220-1-2
28.JUL.2012 Rev.002


Part Number BD6975FV
Description Multifunction Single-phase Full-wave Fan Motor Driver
Maker ROHM
Total Page 17 Pages
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BD6975FV pdf
BD6975FV Datasheet PDF
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