Datasheet
DC Brushless Fan Motor Driver
Multifunction Single-phase Full-wave
Fan Motor Driver
BD61250MUV
General Description
BD61250MUV is pre-driver IC to drive single phase H bridge output composed of external MOS FET.
The power supply input terminal and the drive output have voltage rating of 40V, so it can be used in a 24V power supply
without using voltage drop down circuit.
Features
Pre driver for external power MOS FET
Speed controllable by PWM / DC voltage
Minimum output duty limit
Input / output duty slope adjustment
Silent drive by the PWM soft switching
Lead angle setting
Soft start
Standby mode
Current limit
Lock protection and automatic restart
Rotation speed pulse signal(FG), Lock alarm
signal(AL) selectable
Drive PWM frequency selectable (50kHz/25kHz)
Application
General consumer equipment of Desktop PC, Server,
etc.
Office equipment, Copier, FAX, Laser Printer, etc.
Package
VQFN024V4040
W (Typ) x D (Typ) x H (Max)
4.00mm x 4.00mm x 1.00mm
VQFN024V4040
Absolute Maximum Ratings
Parameter
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
High Side Output Voltage
Low Side Output Voltage
Output Current
Signal Output Voltage
Signal Output Current
Reference Voltage (REF) Output Current
Input Voltage1 (PWMIN, CS, FSEL, SSEL, STBEN)
Input Voltage2 (HP, HM, ADC input terminal)
Symbol
V
CC
Pd
Topr
Tstr
Tjmax
V
OH
V
OL
I
OMAX
V
SIG
I
SIG
I
REF
V
IN1
V
IN2
Rating
40
0.83
(Note 1)
-40 to +105
-55 to +150
+150
V
CC
-7 to V
CC
0 to 7
10
40
10
10
5.3
3.3
Unit
V
W
°C
°C
°C
V
V
mA
V
mA
mA
V
V
(Note 1) Derate by 6.64mW/°C when operating above Ta=25°C. (Mounted on 114.3mm×76.2mm×1.57mm 1layer board)
Caution 1:
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.
Caution 2:
Should by any chance the maximum junction temperature rating be exceeded the rise in temperature of the chip may result in deterioration of the
properties of the chip. In case of exceeding this absolute maximum rating, design a PCB boards with power dissipation and thermal resistance
taken into consideration by increasing board size and copper area so as not to exceed the maximum junction temperature rating.
○Product
structure：Silicon monolithic integrated circuit
○This
product has no designed protection against radioactive rays
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BD61250MUV
Thermal Resistance
(Note 1)
Parameter
VQFN024V4040
Junction to Ambient
Junction to Top Characterization Parameter
(Note 2)
θ
JA
Ψ
JT
150.6
20
37.9
9
Symbol
Thermal Resistance (Typ)
1s
(Note 3)
Datasheet
2s2p
(Note
4)
Unit
°C/W
°C/W
(Note 1)Based
on JESD51-2A(Still-Air)
(Note 2)The
thermal characterization parameter to report the difference between junction temperature and the temperature at the top center of the outside
surface of the component package.
(Note 3)Using
a PCB board based on JESD51-3.
Layer Number of
Measurement Board
Single
Top
Copper Pattern
Footprints and Traces
Layer Number of
Measurement Board
4 Layers
Top
Copper Pattern
Footprints and Traces
Material
FR-4
Board Size
114.3mm x 76.2mm x 1.57mmt
Thickness
70µm
(Note 4)Using
a PCB board based on JESD51-7.
Material
FR-4
Board Size
114.3mm x 76.2mm x 1.6mmt
2 Internal Layers
Bottom
Copper Pattern
74.2mm x 74.2mm
Thickness
70µm
35µm
Thickness
70µm
Copper Pattern
74.2mm x 74.2mm
Thickness
Recommended Operating Conditions
Parameter
Supply Voltage
Hall Input Voltage
PWM Input Frequency
Symbol
V
CC
V
H
f
IN
Min
4.5
0
1
Typ
12
-
-
Max
36
2
100
Unit
V
V
kHz
Input-Output Truth Table
Input
HP
H
L
H
L
HM
L
H
L
H
PWM
H
H
L
L
A1H
H
L
H
H
A1L
H
L
H
L
IC Output
A2H
L
H
H
H
A2L
L
H
L
H
FG
Hi-Z
L
Hi-Z
L
Motor Drive Output
OUT1
L
H
L
Hi-Z
OUT2
H
L
Hi-Z
L
H; High, L; Low, Hi-Z; High impedance
SIG output is open drain output.
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BD61250MUV
Pin Configuration
Block Diagram
(TOP VIEW)
PWMIN
5V
VCC
Datasheet
5V
ADJ
18
REF
SIG
HM
17
I/O
I/O
HP
16
PWMIN
5V
FSEL
5V
15
14
13
LA
LZ
MIN
SLP
SST
SSW
19
12
VCC
STBEN
I/O
I/O
SSEL
A1H
20
11
A1H
A1L
A2H
HP
REF
21
10
VOLTAGE
REGULATOR
CONTROL
LOGIC
+
COMP
-
PRE-
DRIVE
A1L
22
9
A2H
A2L
23
8
A2L
HM
24
7
N.C.
ADJ
+
COMP
-
CS
1
2
3
4
5
6
SSEL
STBEN
FSEL
GND
N.C.
CS
LA
LZ
MIN
SLP
A/D
CONVERTER
TSD
OSC
SIG
Pin Description
SST
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin Name
GND
FSEL
SSEL
STBEN
CS
N.C.
N.C.
A2L
A2H
A1L
A1H
VCC
SIG
PWMIN
REF
HP
HM
ADJ
LA
LZ
MIN
SLP
SST
SSW
Function
GND
Drive PWM frequency select
FG / AL signal select
Standby mode enable select
Current sensing
SSW
GND
Low side output 2
High side output 2
Low side output 1
High side output 1
Power supply
FG / AL signal output
PWM signal input
Reference voltage output
Hall signal input +
Hall signal input -
Output duty correction
Lead angle setting
Re-circulate angle setting
Minimum output duty setting
Input-output duty slope setting
Soft start time setting
Soft switching angle setting
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BD61250MUV
Datasheet
Typical Performance Curves (Reference Data)
6
6
5
105°C
Standby Current: I
CC
2[mA]
Circuit Current: I
CC
1[mA]
5
4
25°C
-40°C
4
3
3
Operating Supply Voltage Range
2
2
105°C
25°C
-40°C
1
Operating Supply Voltage Range
1
0
0
10
20
30
40
Supply Voltage: V
CC
[V]
Figure 1. Circuit Current vs Supply Voltage
0
0
10
20
30
40
Supply Voltage: V
CC
[V]
Figure 2. Standby Current vs Supply Voltage
30
20
20
Hall Input Hysteresis: V
HYS
[mV]
15
105°C
25°C
PWM Input Current: I
PWMH
[µA]
10
10
-40°C
0
Operating Supply Voltage Range
-40°C
5
-40°C
25°C
-10
0
105°C
-5
Operating Supply Voltage Range
25°C
-20
105°C
-30
0
10
20
30
40
-10
0
10
20
30
40
Supply Voltage: V
CC
[V]
Supply Voltage: V
CC
[V]
Figure 4. PWM Input Current vs Supply Voltage
(V
PWM
=5V)
Figure 3. Hall Input Hysteresis vs Supply Voltage
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