Datasheet
DC Brushless FAN Motor Drivers
Three-phase Full-wave
Fan Motor Driver
BD6346FV
●General Description
BD6346FV is a three phase, sensorless motor 1chip driver
with integrated power DMOS MOSFETs. Its feature is
sensor-less drive which doesn’t require a hall device as a
location detection sensor. Furthermore, introducing a PWM
soft switched driving mechanism achieves silent
operations and low vibrations.
●Package(s)
SSOP-B20
●Features
Integrated Power DMOS FET driver
Sensorless PWM soft switched drive
Lock protection and automatic restart
DC voltage/direct PWM input ,speed control
Current limit
Soft-Start function
Quick-Start function
Rotating speed pulse signal(FG)output
UVLO
W (Typ.) x D (Typ.) x H (Max.)
6.50mm x 6.40mm x 1.45mm
SSOP-B20
●Applications
Refrigerator, Sever, Desktop, cooling Fan for general
consumer equipment
●Absolute maximum ratings
Parameter
Supply voltage
Power dissipation
Operating temperature
Storage temperature
Output voltage
Output Current
FG signal output voltage
FG signal output current
REF current ability
Symbol
VCC
Pd
Topr
Tstg
Vomax
Iomax
VFG
IFG
IREF
Limit
20
1200*1
-40 to +100
-55 to +150
20
1.2*2
20
10
8
Unit
V
mW
℃
℃
V
A
V
mA
mA
Input voltage 1 (COM)
Input voltage2 (CONT, MIN, SS, OSC, TOSC, SEL)
Junction temperature
Vin1
Vin2
Tjmax
20
6.5
150
V
V
°C
Symbol
Limit
Unit
Vcc
Vcont
Vmin
Fcont
5.5 to 17.0
0 to Vref
Voscl to Vref
20 to 50
V
V
V
kHz
*1
*2
Reduce by 9.6mW/°C, over Ta=25°C (on 70.0mm×70.0mm×1.6mm glass epoxy board)
This value is not exceed Pd and ASO
●Recommended operating conditions
Parameter
supply voltage range
Input voltage (CONT)
Input voltage (MIN)
Input frequency (CONT, OSC=GND setting)
○Product structure：Silicon monolithic integrated circuit
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Datasheet
BD6346FV
●Pin Configuration(s)
●Pin description
P/No.
T/Name
Function
1
2
3
GND
GND
GND
GND terminal (signal GND)
GND terminal (signal GND)
GND terminal (signal GND)
Soft-Start capacitor connecting
terminal
Reference voltage terminal
Output duty control terminal
Minimum rotating speed setting
terminal
Output slope current select terminal
Motor output U terminal
Output current detecting terminal
(Motor GND)
Motor output V terminal
Motor output W terminal
Power Supply terminal
Motor central tap terminal
Oscillating capacitor connecting
terminal for synchronous driving
Oscillating capacitor connecting
terminal for output PWM operation
Rotating speed pulse signal output
terminal
GND terminal (signal GND)
GND terminal (signal GND)
GND terminal (signal GND)
(TOP VIEW)
GND
1
20
GND
GND
2
19
GND
4
SS
GND
3
18
GND
5
6
REF
CONT
SS
4
17
FG
7
MIN
REF
5
16
OSC
CONT
6
15
TOSC
8
9
SEL
U
MIN
7
14
COM
10
RNF
SEL
8
13
Vcc
U
9
12
W
11
12
13
14
V
W
Vcc
COM
RNF
10
11
V
15
TOSC
16
OSC
17
FG
18
19
20
GND
GND
GND
Fig. 1 Pin configuration
GND pin is shorted all GND pin (1-3, 18-20) on board
●Block diagram
GND 1
LOCK
PROTECT
TSD
UVLO
GND 2
20 GND
19 GND
QUICK
START
GND 3
150° SOFT
SWITCH
18 GND
Vcl
SOFT START
& CURRENT
LIMIT
COMP
SS 4
REF 5
SIGNAL
OUTPUT
REF
17 FG
16 OSC
OSC
REF
TOSC
CONTROL
CONT 6
15 TOSC
LOGIC
BEMF
DETECT
PWM
COMP
MIN 7
14 COM
DET.
COMP
SEL 8
U 9
DETECT
LEVEL
PRE DRIVER
Vcc
Vcc
Vcc
RNF 10
13 Vcc
12 W
11 V
Fig. 2 Block diagram
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Datasheet
BD6346FV
●Electrical characteristics(Unless otherwise specified Ta=25°C, Vcc=12V)
Parameter
Circuit current
<REF>
REF voltage
<TOSC>
TOSC high voltage
TOSC low voltage
TOSC Charge current
TOSC Discharge current
<CONT, MIN>
CONT input high voltage
CONT input low voltage
CONT input bias current
CONT input frequency
MIN input bias current
<OSC>
OSC High voltage
OSC Low voltage
OSC Charge current
OSC Discharge current
<Current Limit>
Current limit voltage
<Soft-Start>
SS charge current
<FG>
FG output Low voltage
FG output leak current
<Lock protection>
Lock detect ON time
Lock detect OFF time
<Output>
Output high voltage
Output low voltage
Icc
Min.
3.6
Limit
Typ.
6
Max.
8.4
Vref
4.65
5.00
5.35
V
Vtosch
Vtoscl
Ictosc
Idtosc
2.3
0.80
–80
40
2.5
1.05
–60
60
2.7
1.20
–40
80
V
V
µA
µA
Vconth
Vcontl
Icont
Fcont
Imin
2.8
20
-
-
1.0
–1
50
–1
V
V
µA
kHz
µA
Vosch
Voscl
Icosc
Idosc
2.3
0.80
–40
20
2.5
1.05
–30
30
2.7
1.20
–20
40
V
V
µA
µA
P.6
P.6
P.6
P.6
Vcl
200
250
300
mV
P.7
Icss
1.35
1.9
2.45
µA
Vss=0V
P.7
Vfgl
Ifgl
-
0.3
-
0.4
10
V
µA
Ifg=5mA
Vfg=20V
P.5
P.5
Ton
Toff
0.5
2.5
1
5
1.5
7.5
s
s
TOSC_CAP=1000pF
-
-
0.15
0.09
0.20
0.16
V
V
Io=–200mA,for VCCvoltage
Io=+200mA
P.7
P.8
Symbol
Vohh
Voll
Unit
Min.
Conditions
Typ.
mA
Ref.
data
P.4
Iref=–2mA
P.4
P.4
P.4
P.5
P.5
Vosc=0V
Vosc=0V
P.6
P.6
About a current item,define the inflow current to IC as a positive notation, and the outflow current from IC as a negative notation.
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BD6346FV
●Typical performance curves(Reference data)
10
6
8
100°C
REF voltage: VREF [V]
Circuit current: Icc[mA]
-40°C
6
100°C
25°C
-40°C
5
25°C
4
4
3
2
Operating range
Operating range
2
0
0
5
10
15
0
20
10
Supply voltage: Vcc[V]
Supply voltage: Vcc[V]
Fig. 3 Circuit current
Fig. 4 REF voltage
15
20
3.0
6.0
TOSC H/L voltage: VTOSCH/VTOSCL[V]
100°C
25°C
-40°C
5.0
REF voltage: VREF [V]
5
4.0
3.0
2.0
100°C
25°C
-40°C
2.5
2.0
Operating range
1.5
100°C
25°C
-40°C
1.0
0.5
0
2
4
6
8
10
Output source current: IR EF [mA]
5
10
15
20
Supply voltage: Vcc[V]
Fig. 5 REF voltage current ability (Vcc=12V)
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Fig. 6 TOSC High/Low voltage
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Datasheet
BD6346FV
●Typical performance curves(Reference data)
0.8
100°C
25°C
-40°C
50
0.6
FG low voltage: VFG [V]
TOSC Charge/ Discharge current:
ICTOSC/ IDTOSC [uA]
100
0
Operating range
-50
0.4
100°C
25°C
0.2
-40°C
25°C
100°C
-100
-40°C
0.0
0
5
10
15
20
0
2
4
Supply voltage: Vcc[V]
6
8
10
FG sink current: IFG[mA]
Fig. 7 TOSC charge/discharge current
Fig. 8 FG low voltage (Vcc=12V)
0.8
10.0
8.0
FG leak current: IFG [uA]
FG low voltage: VFG [V]
0.6
0.4
17V
12V
5.5V
0.2
6.0
4.0
Operating range
2.0
0.0
100°C
25°C
-40°C
0.0
0
2
4
6
8
10
FG sink current: IFG[mA]
5
10
15
20
Supply voltage: Vcc[V]
Fig. 10 FG leak current
Fig. 9 FG low voltage (Ta=25℃)
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BD6346FV
●Typical performance curves(Reference data)
0.2
100°C
25°C
-40°C
0.0
MIN input bias current : Imin[uA]
CONT input bias current : Icont [uA]
0.2
-0.2
-0.4
-0.6
100°C
25°C
-40°C
0.0
-0.2
-0.4
-0.6
-0.8
-0.8
0
5
10
15
Supply Voltage : Vcc[V]
0
20
10
15
Supply Voltage : Vcc[V]
20
Fig. 12 CONT input bias current
Fig. 11 CONT input bias current
3.0
60
100°C
25°C
-40°C
2.5
2.0
1.5
40
OSC Charge/ Discharge current:
ICOSC/ IdoscOSC[uA]
OS C high/low voltage: Vosc h/Voscl[V]
5
100°C
25°C
-40°C
20
0
-20
100°C
25°C
-40°C
1.0
-40°C
25°C
100°C
-40
-60
0.5
0
5
10
15
Supply Voltage : Vc c[V]
20
5
10
15
20
Supply voltage: Vcc[V]
Fig. 14 OSC charge/discharge current
Fig. 13 OSC high/low voltage
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Datasheet
BD6346FV
●Typical performance curves(Reference data)
400
4
3
Current limit voltage: Vcl[mV]
SS charge current: I sscha[uA]
350
2
1
300
250
200
150
100
0
0
5
10
15
0
20
5
10
15
20
Supply voltage: Vcc[V]
Supply voltage: Vcc[V]
Fig. 15 SS charge current
Fig. 16 Current limit voltage
0.20
0.20
0.15
Output Hi voltage: VOH [V]
Output Hi voltage: VOH [V]
100°C
25°C
0.10
-40°C
0.05
0.00
0
50
100
150
200
Output source current: IO[mA]
5.5V
12V
17V
0.10
0.05
0.00
0
50
100
150
200
Output source current: IO[mA]
Fig. 17 Output Hi voltage (Vcc=12V)
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Fig. 18 Output Hi voltage (Ta=25℃)
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Datasheet
BD6346FV
0.20
0.20
0.15
0.15
Output Lo voltage: VOL [V]
Output Lo voltage: VOL [V]
●Typical performance curve (Reference data)
0.10
100°C
25°C
0.05
0.10
17V
12V
5.5V
0.05
-40°C
0.00
0.00
0
50
100
150
0
200
100
150
200
Output sink current: IO[mA]
Output sink current: IO[mA]
Fig.19 Output Lo voltage (Vcc=12V)
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Fig. 20 Output Lo voltage (Ta=25℃)
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Datasheet
BD6346FV
●Application circuit example (Constant values are for reference)
1) Vcc control motor variable speed for application
ex. Vcc input voltage control motor constant speed , not necessary to set minimum rotation speed.
GND
GND
GND
1
TSD
UVLO
2
20
GND
19
QUICK
START
3
FG open collector protection
Connect a pull-up external
resistor
GND
LOCK
PROTECT
150° SOFT
SWITCH
−
GND
18
Vcl
SS
Soft-Start time setting
0.47µF
to 4.7µF
Stable REF for provision
0.1µF to
REF
SOFT START
& CURRENT
LIMIT
COMP
4
5
REF
17
OSC
16
SIG
FG
0Ω to
OSC
Vcc control,
OSC terminal is shorted
GND.
REF
TOSC
CONTROL
CONT 6
Open input setting
15
LOGIC
PWM
COMP
MIN
SIGNAL
OUTPUT
BEMF
DETECT
7
TOSC
Sync-Startup time setting
Its necessary to choose the
best capacitor value for
optimum start-up operation
680pF to
2200pF
14
COM
DET.
COMP
MIN terminal is connected REF
terminal, invalidate minimum
output duty setting.
SEL
8
DETECT
LEVEL
PRE DRIVER
to 10kΩ
U
Select slope current setting
RNF
9
Vcc
Vcc
Vcc
13
12
10
11
Vcc
4.7µF to
(
( )
W
＋
Against
reverse
FAN
connector for provision
V
Provision for Vcc-rise by kick-back
the bypass capacitor, diode must be
routed Vcc terminal as near as
possible.
0.22Ω to
Detect current to limit motor
current, pay attention to
wattage. Because large current
is present.
)
Absolute Output Voltage 20V
Absolute Output Current 1.2A
Fig. 21 Vcc control application
Control input terminal setting of Vcc control motor variable speed for application
In case of Vcc control with OSC terminal is shorted GND, control input terminal (CONT, MIN) is showed in Fig.
22,23.
Setting CONT input, under High
Voltage.(prohibition:Input is
irregular)
NG
REF
CONT
Setting Pull-down
(Prohibition: torque is OFF)
NG
Setting Pull-up
( torque is ON )
OK
REF
REF
CONT
CONT
Setting OPEN (internal
resistance Pull-up,torque is ON)
OK
REF
CONT
Fig. 22 Vcc control (OSC terminal is shorted GND), CONT terminal setting
Setting under REF voltage
(prohibition: input unrelated
control)
NG
REF
MIN
Setting Pull-down
(prohibition: test-mode input)
NG
REF
MIN
Setting Pull-up
( torque is OFF )
OK
REF
Setting OPEN
(Prohibition:Input is irregular)
NG
REF
MIN
MIN
Fig. 23 Vcc control application (OSC terminal is shorted GND), MIN terminal setting
Pay attention to design board
a) IC Vcc, Motor Output, Motor GND line is as wide as possible
b) IC GND line is common to other application GND without motor GND. Wire from near the (-) land.
c) bypass-capacitor, Diode must be routed Vcc terminal as near as possible.
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BD6346FV
●Application circuit example(Constant values are for reference)
2) PWM control motor variable speed for application by PWM duty convert input DC voltage
ex. external PWM signal convert DC voltage, control rotation speed for application. Possible to set minimum rotation
speed.
GND
GND
Soft-Start time setting
GND
1
UVLO
2
20
GND
19
QUICK
START
3
FG open collector protection
Connect a pull-up external
resistor
GND
LOCK
PROTECT
TSD
150° SOFT
SWITCH
−
GND
18
Vcl
Stable REF for provision
SS
0.47µF
to 4.7µF
PWMduty convert DC voltage
circuit
REF
5
0.1µF to
CONT
PWM
SOFT START
& CURRENT
LIMIT
COMP
4
REF
17
OSC
16
OSC
15
BEMF
DETECT
PWM
COMP
7
Output PWM frequency setting
100pF to
1000pF
TOSC
CONTROL
6
SIG
FG
0Ω to
REF
LOGIC
MIN
SIGNAL
OUTPUT
TOSC
Sync-Startup time setting
Its necessary to choose the
best
capacitor
value
for
optimum start-up operation
680pF to
2200pF
14
COM
DET.
COMP
SEL
Minimum input duty setting
8
DETECT
LEVEL
PRE DRIVER
to 10kΩ
U
Select slope current setting
RNF
9
Vcc
Vcc
Vcc
10
13
12
11
4.7µF to
Vcc
(
( )
＋
Against
reverse
FAN
connector for provision
W
V
Provision for Vcc-rise by kick-back
the bypass capacitor, diode must be
routed Vcc terminal as near as
possible.
0.22Ω to
Detect current to limit motor
current, pay attention to
wattage. Because large current
is present.
)
Absolute Output Voltage 20V
Absolute Output Current 1.2A
Fig. 24 PWM duty convert DC voltage application
Control input terminal setting of PWM control motor variable speed for application
In case of PWM control with OSC terminal is shorted GND, control input terminal (CONT, MIN) is showed in Fig.
25,26.But CONT,MIN terminal setting Pull-up are state of Motor stop.
Input variable DC under REF
voltage ( torque is ON/OFF )
OK
REF
Setting Pull-up
( torque is OFF )
OK
Setting Pull-dowm
( torque is ON )
OK
REF
REF
CONT
CONT
Setting OPEN
(prohibition:input is irregular)
NG
REF
PWM
LPF
CONT
CONT
Fig. 25 PWM control by input DC voltage(OSC terminal is CAP to GND), CONT terminal
Setting under OSC High voltage
( torque is ON )
OK
REF
MIN
Setting Pull-down
(prohibition:test-mode input)
NG
Setting Pull-up
( torque is OFF)
OK
REF
REF
MIN
MIN
Setting OPEN
(prohibition:input is irregular)
NG
REF
MIN
Fig. 26 PWM control by input DC voltage (OSC terminal is CAP to GND), MIN terminal setting
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Datasheet
BD6346FV
●Application circuit example(Constant values are for reference)
3)
PWM control motor variable speed for application by input pulse signal (direct PWM input)
ex. external PWM signal duty control directly rotation speed for application. Its not necessary to set minimum
rotation speed.
GND
GND
GND
1
LOCK
PROTECT
TSD
UVLO
2
20
19
QUICK
START
3
Soft-Start time setting
150° SOFT
SWITCH
18
FG open collector protection
Connect a pull-up external
resistor
GND
GND
−
GND
Vcl
SOFT START
& CURRENT
LIMIT
COMP
SS
Stable REF for provision
0.47µF
to 4.7µF
REF
Input Direct PWM
4
5
0.1µF to
PWM
CONT
REF
OSC
16
SIG
FG
0Ω to
TOSC
CONTROL
6
15
BEMF
DETECT
PWM
COMP
MIN terminal is connected REF
terminal, invalidate minimum
output duty setting.
17
OSC
Input Direct PWM,
OSC terminal is shorted
REF
LOGIC
MIN
SIGNAL
OUTPUT
7
14
TOSC
Sync-Startup time setting
Its necessary to choose the
best capacitor value for
optimum start-up operation
680pF to
2200pF
COM
DET.
COMP
SEL
8
DETECT
LEVEL
PRE DRIVER
to 10kΩ
U
9
Select slope current setting
RNF
Vcc
Vcc
Vcc
13
12
10
11
4.7µF to
Vcc
(
( )
W
＋
Against reverse FAN
connector for provision
V
Provision for Vcc-rise by kick-back
the bypass capacitor, diode must be
routed Vcc terminal as near as
possible
0.22Ω to
Detect current to limit motor
current, pay attention to
wattage. Because large current
is present.
)
Absolute Output Voltage 20V
Absolute Output Current 1.2A
Fig. 27 Direct PWM application
Control input terminal setting of PWM control motor variable speed by pulse input for application
In case of PWM control with OSC terminal is shorted GND, control input terminal (CONT, MIN) is showed in Fig.
28,29. But CONT terminal setting Pull-up or OPEN, Motor is state of constant rotation speed.
Pulse input within CONT
input voltage range
OK
REF
Setting Pull-down
(prohibition: torque is OFF)
NG
REF
Setting Pull-up
( torque is ON)
OK
REF
Setting OPEN(torque is
ON,internal resistance Pull-up)
OK
REF
PWM
CONT
CONT
CONT
CONT
Fig. 28 PWM control by input pulse signal (OSC terminal is shorted GND), CONT terminal setting
Setting under REF voltage
(prohibition:input unrelated
control)
NG
REF
MIN
Setting Pull-down
(prohibition: test-mode input
NG
Setting Pull-up
( torque is ON )
OK
REF
REF
MIN
MIN
Setting OPEN
(prohibition:input is irregular)
NG
REF
MIN
Fig. 29 PWM control by input pulse signal (OSC terminal is shorted GND), MIN terminal setting
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BD6346FV
●Description of operations
1) Sensorless Drive
BD6346FV is a motor driver IC for driving a three-phase brushless DC motor without a hall sensor.
Synchronized start-up and BEMF detection driving
Synchronized start-up way, when BEMF signal isn’t detected for constant time at start-up, synchronized start-up
mechanism outputs output logic forcibly by using standard synchronized signal (sync signal) and makes motor
forward drive. This assistance of motor start-up as constant cycle is synchronized driving mechanism. Synchronized
frequency is standard synchronized signal. Driving mechanism changes to BEMF detection driving after detect
BEMF signal. Fig. 30, the timing chart (outline) is shown.
FG signal fixed High (masking) during 1.1s (typ.) after Vcc on.
start
BEMF detect start
VCC
Voltage
U phase
voltage
V phase
voltage
W phase
voltage
Sync.
signal
(IC
internal
signal)
FG
Voltage
Synchronized period
Synchronized start-up section
BEMF detection drive section
FG output . fixed High, during 1.1sec (typ.)
SS
Voltage
Soft start section
(current limit operation)
Fig. 30 Synchronized start-up and BEMF detection driving timing chart
Synchronized time (TOSC)
The TOSC terminal starts a self-oscillation by connecting a capacitor between the TOSC terminal and GND terminal. It
becomes a start-up frequency, and synchronized time can be adjusted by changing external capacitor. When the
capacitor value is small, synchronized time becomes short. It is necessary to choose the best capacitor value for
optimum start-up operation. For example external capacitor is 1000pF, synchronized time is 96ms (typ.).1000pF is
recommended for setting value . Relationship between external capacitor and synchronized time is shown in below.
Ttosc[s] = {Ctosc[F] x (|Idtosc[A]| + |Ictosc[A]|) x (Vtosch[V] – Vtoscl[V])} / (|Idtosc[A] x Ictosc[A]|)
Tosc [s] = 2000 x Ttosc[s]
(ex.) When Ctosc = 1000[pF], TOSC period is nearly 48us, Synchronized time is nearly 96ms.
Ttosc[s] = {1000[pF] x (|60[µA]| + |–60[µA]|) x (2.5[V] – 1.05[V])} / {|60[µA] x (–60[µA])|}
= 48 x 10-6[s]
Tosc[s] = 2000 x 48[µs]
TOSC Capacitor‐Synchronized time Table (ref. Val)
= 96 x 10-3[s]
Ictosc
TOSC
TOSC
OSCILLATOR
TOSC Sig.
X2000
DIVIDER
Sync Sig.
Idtosc
TOSC Capacitor
Synchronized time
(Ctosc) [pF]
(Tosc) [ms]
680
65
1000
96
2200
211
Fig. 31 TOSC Capacitor and IC internal circuit
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Setting of Appropriate capacitor value
Appropriate value of synchronized time is differ with characteristic and parameter of motor. Appropriate value
decided by start-up confirmation with various capacitor value. Recommend to TOSC_CAP with 1000pF,next confirm
to start up with 1200,1500,1700,2000,2200pF･･･,and 870,670,470,330pF･･･,etc. Appropriate capacitor value is
decided after confirm maximum start-up NG value and minimum start-up NG value. For example, small BEMF
voltage motor tends to small capacitor value. Set capacitor value after confirm sufficiently. Setting TOSC_CAP value
range is from 680pF to 2200pF.
1) Sensorless-drive (continuance)
PWM soft-switched driving
PWM soft-switched driving, When each phase changed, change smoothly each phase current. For purpose, silent
and low vibration motor driving.
In Fig. 32, the timing charts of the output signals from U,V,W phase as well as the FG terminal is shown with PWM
soft-switched driving section. Assuming that a three-slot tetrode motor is used, two pulse outputs of FG are
produced for one motor cycle. The three phases are excited in the order of U,V, and W phases.
STAGE
①
②
Position 0
[deg]
60
③
120
④
180
⑤
240
⑥
300
①
②
60
360
③
120
④
180
⑤
240
⑥
300
360
U相電圧
U phase
vol.
V相電圧
V phase
vol.
W phase
vol.
W相電圧
FG
vol.
FG電圧
V
U
U
U
W
V
W
V
U
W
V
U
W
V
U
W
V
W
V
U
U
U
W
V
W
V
U
W
V
U
W
V
U
W
V
W
PWMソフトスイッチング動作
PWM soft-switched driving operation
Fig. 32 BEMF detection driving (full-torque) and PWM soft-switched driving timing
STAGE
①
②
③
④
⑤
⑥
Motor U output
H
H
Hi-Z
L
L
Hi-Z
Motor Output
Motor V output
L
Hi-Z
H
H
Hi-Z
L
Motor W output
Hi-Z
L
L
Hi-Z
H
H
note) Output pattern proceed in numeric 1→2→3 ∼ 6→1.
H; High, L; Low, Hi-Z; High impedance
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BD6346FV
●
Description of operations
2) Lock Protection Feature, Automatic Recovery Circuit
To prevent passing a coil current on any phase when a motor is locked, it is provided with a function, which
can turn OFF the output for a certain period of time and then automatically restore itself to the normal
operation. During the motor rotation, an appropriate logic based on the induced electromotive voltage can be
continuously given to each phase; on the other hand, when the motor is locked, no induced electromotive
voltage is obtained. Utilizing this phenomenon to take a protective against locking, when the induced
electromotive voltage is not detected for a predetermined period of time (TON typ. 1.0s), it is judged that the
motor is locked and the output is turned OFF for a predetermined period of time (TOFF typ. 5.0s). In Fig. 33,
the timing chart is shown.
Motor lock
Induced
Electromotive
Voltage
detection
Detectin
Motor unlock
Not
Detection
TO
Output
ON
Detectin
TOFF
OFF
Recover to the
normal operation
ON
FG
Fig. 33 Lock protection (Internal counter way) timing chart
3)UVLO（Under voltage lock out circuit）
In the operation area under the guaranteed operating power supply voltage of 5.5V (typ.), the transistor
on the output can be turned OFF at a power supply voltage of 3.9V (typ.). A hysteresis width of 250mV is provided
and a normal operation can be performed at 4.15V(typ.). This function is installed to prevent unpredictable operations,
such as a large amount of current passing through the output, by means of intentionally turning OFF the output
during an operation at a very low power supply voltage which may cause an abnormal function in the internal circuit.
About turning off a output voltage at UVLO, It becomes a OFF mode.
(Upper MOS FET and Under MOS FET are turned OFF.)
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●Description of operations
4)PWM speed control
Rotation speed change by Motor output (U,V,W ) PWM duty., PWM operation are in below two ways.
a) OSC terminal connect CAP to GND, DC voltage input to CONT terminal, MIN terminal.
b) OSC terminal is shorted GND, Pulse signal input to CONT terminal.
STAGE
①
②
Position 0
[deg]
③
60
120
④
⑤
180
240
⑥
300
①
360
②
60
③
120
④
180
⑤
240
⑥
300
360
U phase
vol.
U相電圧
V phase
vol.
V相電圧
W phase
vol.
W相電圧
V
U
U
U
W
V
V
W
U
W
V
U
W
V
U
W
V
PWMソフトスイッチング動作
PWM soft-switched driving
W
V
U
U
U
W
V
W
V
U
W
V
U
W
V
U
W
V
W
PWM可変速制御
PWM speed control
Fig. 34 BEMF detection driving (PWM control) and PWM soft-switching timing chart
a) PWM control, OSC terminal connect CAP to GND, DC voltage input to CONT terminal, MIN terminal.
As shown in Fig. 36, to change the output ON time, a DC input voltage from TH terminal is compared to the
triangle wave produced by the OSC circuit. MIN terminal is use to set the minimum rotational speed. ON time
is determined by either CONT terminal voltage or MIN terminal voltage, whichever is lower.
OSC voltage > CONT voltage (MIN voltage): PWM output phase ON
OSC voltage < CONT voltage (MIN voltage): PWM output phase OFF
REF
CONT
MIN
OSC
5.0V
2.5V
1.05V
0.0V
GND
REF
REF
High
U_vol.
OSC
Low
OSC
REF
PWM
PWM
COMP
V_vol.
PWM
COMP
W_vol.
High
Middle
Low
Disable
LPF
High
CONT
MIN
Direct PWM
Low
Motor
Motorout
out ON
Full
Motor
torque
Fig. 35 DC input application
Min.
Zero
Fig. 36 DC input PWM control timing chart (ex. (U, V, W) = (L, M, H))
Resistor divider of the internal regulator (REF) terminal equal to typ. 5.0V) generates OSC high and low voltage
level of typically 2.5V and 1.05V respectively, and the ratio of those voltages is designed not to fluctuate easily.
When the input voltage at TH terminal is constant, the effect of OSC H/L voltage fluctuation is large. However, an
application can be made which is not easily affected by the fluctuation of the triangular wave by generating CONT
voltage from REF. For application that requires high precision, determine the value with sufficient margin after
taking full consideration of external components. It should be detected constant value with margin for application of
more severe precision.
Output frequency setting
The PWM Frequency (Fosc) in which the motor is operated is set according to the capacitor value (Cosc)
connected to OSC terminal.
Fosc[Hz] = (|Idosc[A] x Icosc[A]|) / {Cosc[F] x (|Idosc[A]| + |Icosc[A]|) x (Vosch[V] – Voscl[V])}
(ex.) When Cosc is 330pF, the PWM output frequency is 31kHz.
Fosc[Hz] = {|30[µA] x (–30[µA])|} / {330[pF] x (|30[µA]| + |–30[µA]|) x (2.5[V] – 1.05[V])}
= 31 x 103[Hz]
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●Description of operations
4) PWM speed control (continuance)
b) PWM control: OSC terminal is shorted GND, Pulse signal input to CONT terminal.
In Fig. 38, PWM control, pulse signal input to CONT terminal. Motor output PWM duty change by input pulse
signal duty. MIN terminal should be pulled up REF terminal.
REF MIN
5.0V
2.5V
CONT
1.05V
REF
0.0V
GNDOSC
REF
High
OSC
U_vol.
OSC
Low
Disable
REF
PWM
COMP
PWM
High
Middle
V_vol.
Low
CONT
PWM
COMP
MIN
High
W_vol.
Direct PWM
Low
Motor output ON
Full
Fig. 37 Input pulse application
Motor
torque
Zero
Fig. 38 Input pulse PWM control timing chart (ex. (U, V, W) = (L, M, H))
5)Current limit
A current passing through the motor coil can be detected on the output current detection resistance to prohibit a
current flow larger than a current limit value (motor output off).The current limit value is determined by setting of the IC
internal limit(Vcl) :250mV (typ.),and the output current detection resistance value using the following in below equation.
Io[A] = Vcl[V] / R1[Ω]
PR[W] = Vcl[V] x Io[A]
= 250[mV] / 0.33[Ω]
= 250[mV] x 0.758[A]
=0.758[A]
= 0.19[W]
Vcc
U
When no-use current limit function, RNF terminal is shorted
GND.
Connect detect current
resistance(current limit Enable)
OK
V
W
Open setting (prohibit,motor
GND terminal)
NG
GND short setting
(current limit Disable)
OK
−
R1
Io
RNF
Motor large current
GND line
Vcl
SS
RNF
RNF
RNF
C1
Icss
IC small signal
GND
GND line
Fig. 39 Current limit function, RNF terminal setting
SOFT START &
CURRENT LIMIT
COMP
Fig. 40 small signal and large current GND line separate
In Fig. 40, IC small signal GND line should be separated Motor large current GND line connected R1.Same as soft
start Capacitor.(P.4 Pay attention to design board(b)) item reference)
6)Soft start
To prevent lush current, slowly up to rotation speed, when
motor start in VCC on, quick start, restart lock detect on etc.
Soft start time set by SS terminal connected CAP to charge
current. No use soft start, SS terminal set open. 1uF is
recommended for setting value at first, or 0.47uF-4.7uF.
Connect capacitor
(Softstart Enable)
OK
Open setting
(Softstart Disable)
OK
SS
SS
Fig. 41 Soft start function, SS terminal setting
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BD6346FV
●Description of operations
6) Soft start (continuance)
In Fig. 40, SS terminal charge current (Icss) is 1.9uA (typ.), Set SS terminal connect Capacitor (C1) and cut motor
output current (Icut), lead to that current time(Tss) in below equation. Icss1 is reduced 1/10 SS terminal charge current
(Icss) in internal IC.
Tss[s] = (C1[F] x Icut[A] x R1[Ω]) / Icss1[A]
(ex.) Assuming that C1 = 1.0[µF], Icut = 0.8[A], R1 = 0.1[Ω] then, soft-start time is 421ms
Tss[s] = (1.0[µF] x 0.8[A] x 0.1[Ω]) / (1.9/10)[uA]
= 421x 10-3[s]
ON
Vcc
Softstart capacitor discharge time typ. 1.0ms
Current
limit
l
Motor
Output
current
Softstart capacitor discharge time typ. 1.0ms
Tss
Tss
OFF
Io
Icut
0A
VCC on
VCC on
Fig. 43 Characteristic of motor output current
at no soft-start setting
Fig. 42 Characteristic of motor output current
at soft-start setting
7) Quick start
When torque off logic is inputted
by the control signal over fixed
time (80us), the lock protection
function becomes off.
And the motor could restart
quickly at the timing of control
signal in input.
ON
torque
order
OFF
Enable
Lock protection
Internal signal
Disable
typ. 80µs
CONT or
MIN
torque
Quick start stand-by
Motor
Output ON
duty
0%
Tss
Fig. 44 torque order and quick start, timing chart
8) Select of drive current slope
By changing two steps PWM soft-switching section in SEL
terminal, can adjust each phase slope at motor driving. SEL
terminal pull down resistance internal IC.SEL terminal is to
pull-up REF terminal, SEL input signal is high.
When SEL terminal pull up REF terminal, PWM soft-switching
section is more wide to smoothly current slope than SEL
terminal OPEN, BEMF detection section is more narrow.
Please select to fit application.
Open setting (IC internal
Pull-up setting
resistance pull-down, low input) (High input)
OK
OK
REF
SEL
REF
SEL
Fig. 45 Slope of drive current, SEL setting
Position
[deg ] 0
60
120
180
240
300
360
0
60
120
180
240
300
360
U phase v ol.
V phase v ol.
W phase v ol.
Sof t-switching PW M operation
Fig. 46 SEL open, drive waveform
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BD6346FV
●Safety measure
1) Reverse connection protection diode
Reverse connection of power results in IC destruction as shown in Fig. 48. When reverse connection is possible,
reverse connection protection diode must be added between power supply and VCC.
After reverse connection
destruction prevention
Reverse power connection
In normal energization
VCC
VCC
VCC
Circuit
block
Circuit
block
I/O PIN
GND
Circuit
block
I/O PIN
GND
I/O PIN
GND
Large current flows
Internal circuit impedance is high
⇒Thermal destruction
⇒Amperage small
Fig. 48 Flow of current when power is connected reversely
No destruction
2) Measure against VCC voltage rise by back electromotive force
Back electromotive force (Back EMF) generates regenerative current to power supply. However, when reverse
connection protection diode is connected, VCC voltage rises because the diode prevents current flow to power supply.
ON
Phase
switching
ON
ON
ON
Fig. 49 Vcc voltage rise by back electromotive force
When you use reverse connection protection diode, Please connect Zenner diode, or capacitor.
Do not exceed absolute maximum ratings Vcc=20V.
(A) Capacitor
(B) Zenner diode
ON
(C) Capacitor & Zenner diode
ON
ON
ON
ON
ON
Fig. 50 Measure against Vcc voltage rise
3) Problem of GND line PWM switching
Do not perform PWM switching of GND line because GND terminal potential cannot be kept to a minimum.
4) FG output
FG output is an open drain and requires pull-up resistor. Adding resistor R1 can protect the IC. An excess of absolute
maximum rating, when FG output terminal is directly connected to power supply, could damage the IC.
Motor Unit
Vcc
Motor
driver
Controler
driver
M
FG
GND
Protection
resistor
SIG
Ｐ Ｗ Ｍ input
Pull-up
resistor
connector
prohibit
Fig. 51 GND line PWM switching prohibited
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BD6346FV
●Power dissipation
Power dissipation (total loss) indicates the power that can be consumed by IC at Ta=25°C (normal temperature). IC is
heated when it consumes power, and the temperature of IC chip becomes higher than ambient temperature. The
temperature that can be accepted by IC chip depends on circuit configuration, manufacturing process, etc, and consumable
power is limited. Power dissipation is determined by the temperature allowed in IC chip (maximum junction temperature)
and thermal resistance of package (heat dissipation capability). The maximum junction temperature is in general equal to
the maximum value in the storage temperature range.
Heat generated by consumed power of IC is radiated from the mold resin or lead frame of package. The parameter which
indicates this heat dissipation capability (hardness of heat release) is called heat resistance, represented by the symbol
θja[°C/W]. This heat resistance can estimate the temperature of IC inside the package. Fig. 53 shows the model of heat
resistance of the package. Heat resistance θja, ambient temperature Ta, junction temperature Tj, and power consumption P
can be calculated by the equation below:
θja = (Tj – Ta) / P [°C/W]
Thermal derating curve indicates power that can be consumed by IC with reference to ambient temperature. Power that can
be consumed by IC begins to attenuate at certain ambient temperature. This gradient is determined by thermal resistance
θja. Thermal resistanceθja depends on chip size, power consumption, package ambient temperature, packaging condition,
wind velocity, etc., even when the same package is used. Thermal derating curve indicates a reference value measured at
a specified condition. Fig. 54 shows a thermal derating curve (Value when mounting FR4 glass epoxy board
70[mm]×70[mm] ×1.6[mm] (copper foil area below 3[%]))
1200
900
Pd[mW]
θja = (Tj – Ta) / P [°C/W]
θjc = (Tj – Tc) / P [°C/W]
θja=104.2 [°C/W]
600
300
0
25
50
75
100
125
150
Ta[° C]
*Reduce by 9.6mW/℃ over 25℃
（On 70.0mmX70.0mmX1.6mm glass epoxy board）
Fig. 53 Thermal resistance
Fig. 54 Thermal derating curve
●Equivalent circuit ( resistor is reference value )
1) Vcc,GND terminal
2) CONT terminal
3) MIN terminal
REF
4) SEL terminal
REF
REF
Vcc
200kΩ
10kΩ
CONT
12kΩ
MIN
GND
6) OSC,TOSC terminal
Vcc
10kΩ
1kΩ
1kΩ
5) REF terminal
SEL
7) SS terminal
200kΩ
8) U,V,W,RNF terminal
Vcc
Vcc
Vcc
40kΩ
REF
1kΩ
40kΩ
1kΩ
62kΩ
SS
30Ω
U
V
W
RNF
OSC, TOSC
9) COM terminal
10) FG terminal
Vcc
COM
2kΩ
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BD6346FV
●Operational Notes
1) Absolute maximum ratings
An excess in the absolute maximum rations, such as supply voltage, temperature range of operating conditions, etc.,
can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open
circuit. If any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection
devices, such as fuses.
2) Connecting the power supply connector backward
Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power
supply lines. An external direction diode can be added.
3) Power supply line
Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a
capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor
characteristics have no problem before determine a capacitor value. (When applying electrolytic capacitors,
capacitance characteristic values are reduced at low temperatures)
4) GND potential
It is possible that the motor output terminal may deflect below GND terminal because of influence by back
electromotive force of motor. The potential GND terminal must be minimum potential in all operating conditions,
except that the levels of the motor outputs terminals are under GND level by the back electromotive force of the motor
coil. Also ensure that all terminals except GND and motor output terminals do not fall below GND voltage including
transient characteristics. Malfunction may possibly occur depending on use condition, environment, and property of
individual motor. Please make fully confirmation that no problem is found on operation of IC.
5) Thermal design
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating
conditions.
6) Inter-pin shorts and mounting errors
Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any
connection error or if pins are shorted together.
7) Actions in strong electromagnetic field
Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to
malfunction.
8) ASO
When using the IC, set the output transistor so that it does not exceed absolute maximum rations or ASO.
9) Thermal shut down circuit
The IC incorporates a built-in thermal shutdown circuit (TSD circuit). Operation temperature is 175°C (typ.) and has a
hysteresis width of 25°C (typ.). When IC chip temperature rises and TSD circuit works, the output terminal becomes
an open state. TSD circuit is designed only to shut the IC off to prevent thermal runaway. It is not designed to protect
the IC or guarantee its operation. Do not continue to use the IC after operation this circuit or use the IC in an
environment where the operation of this circuit is assumed.
10) Testing on application boards
When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to
stress. Always discharge capacitors after each process or step. Always turn the IC’s power supply off before
connecting it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps
as an antistatic measure. Use similar precaution when transporting or storing the IC.
11) GND wiring pattern
When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns,
placing a single ground point at the ground potential of application so that the pattern wiring resistance and voltage
variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to
change the GND wiring pattern of any external components, either.
12) Capacitor between output and GND
When a large capacitor is connected between output and GND, if Vcc is shorted with 0V or GND for some cause, it is
possible that the current charged in the capacitor may flow into the output resulting in destruction. Keep the capacitor
between output and GND below 100uF.
13) IC terminal input
When Vcc voltage is not applied to IC, do not apply voltage to each input terminal. When voltage above Vcc or below
GND is applied to the input terminal, parasitic element is actuated due to the structure of IC. Operation of parasitic
element causes mutual interference between circuits, resulting in malfunction as well as destruction in the last. Do not
use in a manner where parasitic element is actuated.
14) In use
We are sure that the example of application circuit is preferable, but please check the character further more in
application to a part that requires high precision. In using the unit with external circuit constant changed, consider the
variation of externally equipped parts and our IC including not only static character but also transient character and
allow sufficient margin in determining.
●status of this document
The English version of this document is formal specification. A customer may use this translation version only for a
reference to help reading the formal version.
If there are any differences in translation version of this document formal version takes priority
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Datasheet
BD6346FV
●Physical Dimension Tape and Reel Information
SSOP-B20
<Tape and Reel information>
6.5 ± 0.2
11
1
Tape
Embossed carrier tape
Quantity
2500pcs
Direction
of feed
0.3Min.
4.4 ± 0.2
6.4 ± 0.3
20
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
)
10
1.15 ± 0.1
0.1± 0.1
0.15 ± 0.1
0.1
0.65
0.22 ± 0.1
1pin
(Unit : mm)
Reel
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
●Marking Diagram
SSOP-B20
(TOP VIEW)
B D 6 3 4 6
Part Number
LOT Number
1PIN Mark
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Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
, transport
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in
the range that does not exceed the maximum junction temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-PGA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.003
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
A two-dimensional barcode printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data.
2.
ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice-PGA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.003
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.001