Datasheet
DC Brushless Fan Motor Drivers
Multifunction Single-phase Full-wave
Fan Motor Driver
BD61241FV
General Description
BD61241FV is a 1chip driver that is composed of
H-bridge power DMOS FET. The pin is compatible with
BD61240FV(rotation speed pulse signal output).
Key Specifications
Operating Voltage Range:
5.5V to 16V
Operating Temperature Range: -40°C to +105°C
Output Voltage (Total):
0.2V(Typ) at 0.2A
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 / PWM Input
I/O Duty Slope Adjust
PWM Soft Switching
Current Limit
Start Duty Assist
Lock Protection and Automatic Restart
Quick Start
Lock alarm signal (AL) output
Package
Applications
Fan motors for general consumer equipment of
desktop PC, Projector, etc.
SSOP-B16
Typical Application Circuits
SIG
1
2
AL
H-
H+
LA
PWM
CS
OUT2
RNF
GND
SLOPE
SOFT
LZ
MIN
REF
VCC
OUT1
16
15
SIG
1
2
AL
H-
H+
LA
PWM
CS
OUT2
RNF
GND
SLOPE
SOFT
LZ
MIN
REF
VCC
OUT1
16
15
14
13
H
3
4
14
13
12
11
10
9
H
3
4
5
6
7
8
DC
PWM
5
6
7
8
12
11
10
9
M
＋
－
M
＋
－
Figure 1. Application of PWM Input
Figure 2. Application of DC Voltage Input
〇Product
structure : Silicon monolithic integrated circuit
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© 2015 ROHM Co., Ltd. All rights reserved.
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〇This
product has no designed protection against radioactive rays
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TSZ02201-0H1H0B101570-1-2
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BD61241FV
Pin Configuration
(TOP VIEW)
AL
H-
H+
LA
PWM
CS
OUT2
RNF
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND
SLOPE
2
1
Datasheet
Block Diagram
AL
SIGNAL
OUTPUT
OSC
TSD
GND
16
H-
-
SLOPE
15
COMP
+
INSIDE
REG
SOFT
3
H+
SOFT
14
LZ
MIN
REF
4
LA
INSIDE
REG
CONTROL
LOGIC
LZ
13
5
FILTER
MIN
12
PWM
VCC
VCC
6
CS
V
CL
-
COMP
+
PRE-
DRIVER
REFE-
RENCE
REF
11
OUT1
7
OUT2
VCC
V
CC
10
8
RNF
OUT1
9
Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
Function
AL
Lock alarm signal
output terminal
H–
Hall – input terminal
H+
Hall + input terminal
Lead angle function select
LA
terminal
PWM
PWM input duty terminal
CS
Output current detecting terminal
OUT2
Motor output terminal 2
RNF
OUT1
VCC
REF
MIN
LZ
SOFT
SLOPE
GND
Output current detecting resistor
connecting terminal (motor ground)
Motor output terminal 1
Power supply terminal
Reference voltage output terminal
Minimum output duty setting
terminal
Recirculate period setting terminal
Soft switching setting terminal
I/O duty slope setting terminal
Ground terminal (signal ground)
I/O Truth Table
Hall Input
H+
H–
H
L
L
H
H; High, L; Low
Driver Output
OUT1
OUT2
L
H
H
L
AL
L
Hi-Z
Motor state
Rotating
Locking
AL output is open-drain type.
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TSZ22111・15・001
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TSZ02201-0H1H0B101570-1-2
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BD61241FV
Absolute Maximum Ratings
Parameter
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Output Voltage
Output Current
Lock Alarm Signal (AL) Output Voltage
Lock Alarm Signal (AL) Output Current
Reference Voltage (REF) Output Current
Input Voltage1
(H+,H–,MIN,CS,LA,SOFT,LZ,SLOPE)
Input Voltage2 (PWM)
Junction Temperature
Symbol
V
CC
Pd
Topr
Tstg
V
O
I
O
V
AL
I
AL
I
REF
V
IN1
V
IN2
Tj
Limit
18
0.87
(Note 1)
-40 to +105
-55 to +150
18
1.2
(Note 2)
18
10
10
3.6
6.5
150
Unit
V
W
°C
°C
V
A
V
mA
mA
V
V
°C
Datasheet
(Note 1) Reduce by 7.0mW/°C when operating over Ta=25°C. (Mounted on 70.0mm×70.0mm×1.6mm glass epoxy board)
(Note 2) Do not exceed Pd.
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Recommended Operating Conditions
Parameter
Operating Supply Voltage Range
Input Voltage Range1
(H+, H–, MIN, LA, SOFT, LZ, SLOPE)
Input Voltage Range2 (CS)
Input Voltage Range3 (PWM)
PWM Input Duty Range
PWM Input Frequency Range
Symbol
V
CC
V
IN1
V
IN2
V
IN3
D
PWM
f
PWM
Limit
5.5 to 16
0 to V
REF
+0.3
0 to 1/2 x V
REF
0 to 5
0 to 100
15 to 50
Unit
V
V
V
V
%
kHz
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TSZ22111・15・001
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TSZ02201-0H1H0B101570-1-2
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BD61241FV
Electrical Characteristics (Unless otherwise specified Ta=25°C, V
CC
=12V)
Parameter
Circuit Current
Output Voltage
Lock Detection ON Time
Lock Detection OFF Time
Hall Input Hysteresis Voltage+
Hall Input Hysteresis Voltage-
AL Output Low Voltage
AL Output Leak Current
PWM Input High Level Voltage
PWM Input Low Level Voltage
PWM Input Current
Reference Voltage
Current Limit Setting Voltage
LA Input High Level Voltage
LA Input Low Level Voltage
LA Input Current
CS Input Bias Current
Symbol
I
CC
V
O
t
ON
t
OFF
V
HYS
+
V
HYS
-
V
ALL
I
ALL
V
PWMH
V
PWML
I
PWMH
I
PWML
V
REF
V
CL
V
LAH
V
LAL
I
LAH
I
LAL
I
CS
Limit
Min
3.0
-
0.3
3.0
7
-5
-
-
2.5
0.0
-10
-50
3.0
235
2.5
0.0
-10
-0.47
-0.4
Typ
4.5
0.2
0.5
5.0
12
-10
-
-
-
-
0
-25
3.3
265
-
-
0
-0.33
-
Max
6.5
0.35
0.7
7.0
17
-15
0.30
10
5.0
1.0
10
-12
3.6
295
3.3
1.0
10
-0.25
-
Unit
mA
V
s
s
mV
mV
V
μA
V
V
μA
μA
V
mV
V
V
μA
mA
μA
I
AL
=5mA
V
AL
=16V
I
OUT
=±200mA,
high and low side total
Conditions
Datasheet
Reference
Data
Figure 3
Figure 4 to
Figure 7
Figure 8 to
Figure 10
Figure 11
Figure 12 to
Figure 13
Figure 14
-
-
Figure 15 to
Figure 16
Figure 17 to
Figure 18
Figure 19
-
-
Figure 20
Figure 21
Figure 22
V
PWM
=5V
V
PWM
=0V
I
REF
=-1mA
V
LA
=REF
V
LA
=0V
V
CS
=0V
For parameters involving current, positive notation means inflow of current to IC while negative notation means outflow of current from IC.
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BD61241FV
Typical Performance Curves (Reference Data)
8
0.0
Datasheet
Output High Voltage: V
OH
[V]
Circuit Current: I
CC
[mA]
6
-0.3
–40°C
-0.6
4
105°C
25°C
–40°C
25°C
105°C
2
Operating Voltage Range
-0.9
0
0
5
10
15
20
Supply Voltage: V
CC
[V]
-1.2
0.0
0.4
0.8
1.2
Output Source Current: I
O
[A]
Figure 3. Circuit Current vs Supply Voltage
Figure 4. Output High Voltage vs Output Source Current
(V
CC
=12V)
0.0
1.2
Output High Voltage: V
OH
[V]
Output Low Voltage: V
OL
[V]
-0.3
0.9
105°C
0.6
16V
-0.6
12V
5.5V
-0.9
25°C
–40°C
0.3
-1.2
0.0
0.4
0.8
1.2
Output Source Current: I
O
[A]
0.0
0.0
0.4
0.8
1.2
Output Sink Current: I
O
[A]
Figure 5. Output High Voltage vs Output Source Current
Figure 6. Output Low Voltage vs Output Sink Current
(V
CC
=12V)
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© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/27
TSZ02201-0H1H0B101570-1-2
16.Oct.2015 Rev.001
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