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Rohm Semiconductor Electronic Components Datasheet

BD61250MUV Datasheet

Fan Motor Driver

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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
Symbol
Rating
Unit
Supply Voltage
Power Dissipation
VCC 40 V
Pd
0.83(Note 1)
W
Operating Temperature Range
Topr -40 to +105 °C
Storage Temperature Range
Tstr
-55 to +150
°C
Maximum Junction Temperature
Tjmax
+150
°C
High Side Output Voltage
VOH VCC-7 to VCC V
Low Side Output Voltage
VOL 0 to 7 V
Output Current
IOMAX 10 mA
Signal Output Voltage
VSIG 40 V
Signal Output Current
ISIG 10 mA
Reference Voltage (REF) Output Current
IREF 10 mA
Input Voltage1 (PWMIN, CS, FSEL, SSEL, STBEN)
VIN1
5.3
V
Input Voltage2 (HP, HM, ADC input terminal)
VIN2
3.3
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 structureSilicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/26
TSZ02201-0H1H0B101660-1-2
20.Jul.2017 Rev.003


Rohm Semiconductor Electronic Components Datasheet

BD61250MUV Datasheet

Fan Motor Driver

No Preview Available !

BD61250MUV
Datasheet
Thermal Resistance(Note 1)
Parameter
Symbol
Thermal Resistance (Typ)
1s(Note 3)
2s2p(Note 4)
Unit
VQFN024V4040
Junction to Ambient
θJA 150.6
37.9
°C/W
Junction to Top Characterization Parameter(Note 2)
ΨJT 20
9 °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
Material
Board Size
Single
FR-4
114.3mm x 76.2mm x 1.57mmt
Top
Copper Pattern
Footprints and Traces
Thickness
70µm
(Note 4)Using a PCB board based on JESD51-7.
Layer Number of
Measurement Board
Material
4 Layers
FR-4
Top
Copper Pattern
Footprints and Traces
Thickness
70µm
Board Size
114.3mm x 76.2mm x 1.6mmt
2 Internal Layers
Copper Pattern
Thickness
74.2mm x 74.2mm
35µm
Bottom
Copper Pattern
74.2mm x 74.2mm
Thickness
70µm
Recommended Operating Conditions
Parameter
Symbol Min Typ Max Unit
Supply Voltage
Hall Input Voltage
PWM Input Frequency
VCC 4.5 12 36 V
VH 0 - 2 V
fIN 1 - 100 kHz
Input-Output Truth Table
Input
HP HM PWM
HLH
L HH
HL L
LHL
H; High, L; Low, Hi-Z; High impedance
SIG output is open drain output.
A1H
H
L
H
H
IC Output
A1L A2H
HL
LH
HH
LH
A2L
L
H
L
H
Motor Drive Output
FG
OUT1
OUT2
Hi-Z L
H
LH L
Hi-Z L Hi-Z
L Hi-Z L
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/26
TSZ02201-0H1H0B101660-1-2
20.Jul.2017 Rev.003


Part Number BD61250MUV
Description Fan Motor Driver
Maker ROHM
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BD61250MUV Datasheet PDF






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