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BA6671FM View Datasheet(PDF) - ROHM Semiconductor

Part Name
Description
View to exact match
BA6671FM
ROHM
ROHM Semiconductor ROHM
BA6671FM Datasheet PDF : 18 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
BA6859AFP-Y,BA6664FM,BD6671FM
Technical Note
2) BA6664FM
Hall1
Hall1
Hall1
Output to the motor will be opened at a chip tempe
175°C (Typ.). Do not use the IC in excess of a chip
rature of temperature of 150°C.
Torque limit current and I/O gain settings are made by
the RNF resistance value.
Resistance of 0.4 to 1.0Ω is recommended.
A3
2
A2
4
A1
7
GND
8
H1+
9
H1-
TL
HALL AMP
+
-
+
-
10
+
H2+
-
11
+
H2-
-
12
+
H3+
-
13
+
H3-
-
14
DRIVER
TSD
GAIN
CONTROL
CURRENT
SENSE AMP + -
GAIN
SWITCH
VCC
PS
TORQUE
SENSE AMP
VCC
VCC
R
DQ
CK Q
SHORT BRAKE
BRAKE MODE
Hall Bias
RNF 0.5Ω
28
VM RNF
27 GSW
26
VCC
25
FG
24
PS
23
EC
22
ECR
21
FR
20
VM
+
- 1µF
Capacitor for noise level mitigation.
The recommended value is 0.47 µF to 10 µF.
+ 1µF
-
I/O gain
Speed detection is attained by FG signal output.
SERVO
SIGNAL
The power saving mode is turned ON by low-level voltage,
and the circuit current and motor output will stop.
The motor torque current is controllable.
If the ECR voltage is set between 1.6 and 2.2V, the
maximum torque limit current will be obtained.
FG2
19
SB
18
CNF
17
BR
16
VH
15
0.1µF
The detection of motor rotation direction is possible.
The short brake is operated regardless of brake mode settings.
Connect a capacitor for phase compensation.
The recommended value is 0.1µF.
Short brake and reversed brake settings are possible.
FIN
500Ω
500Ω
Resistor for setting Hall input level .
The recommended value is 200 Ω to 1k Ω.
Output will be open when the reverse rotation of the motor is
detected.
Fig.6 BA6664FM Block Diagram
BA6664FM Pin Function Table
Pin No. Pin name
Function
1
N.C. N.C.
2
A3 Output pin
3
N.C. N.C.
4
A2 Output pin
5
N.C N.C.
6
N.C. N.C.
Pd[W]
7
A1 Output pin
8
GND GND pin
9
H1+ Hall signal input pin
10
H1- Hall signal input pin
2.2
2.0
11
H2+ Hall signal input pin
12
H2- Hall signal input pin
13
H3+ Hall signal input pin
14
H3- Hall bias input pin
15
VH Hall bias input pin
16
BR Brake mode pin
17
CNF
Capacitor connection pin for phase
compensation
1.0
18
SB Short brake pin
19
FG2 FG 3-phase component output pin
20
FR Rotation detection pin
0
25 50 75 85 100 125 150
21
ECR Output voltage control reference pin
Ta()
22
EC Output voltage control pin
23
PS Power-saving pin
Fig.7 Power Dissipation Reduction (BA6664FMBD6671FM) 24
FG FG signal output pin
25
VCC Power supply pin
*Reduced by 11.6 mW/over 25, when mounted on a glass epoxy board
(70 mm x 70 mm x 1.6 mm).
26
GSW Gain switching pin
27
VM Motor power supply pin
28
RNF
Resistance connection pin for output
current detection
FIN
FIN GND
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© 2010 ROHM Co., Ltd. All rights reserved.
6/17
2010.06 - Rev.A
 

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