Rohm BD6712AF Silicon monolithic integrated circuit Datasheet

1/4
STRUCTURE
Silicon Monolithic Integrated Circuit
PRODUCT SERIES
2-Phase Half-Wave Pre Driver for Fan Motor
TYPE
BD6712AF
FEATURES
Built - in zenner diode for Vcc clamp
〇ABSOLUTE MAXIMUM RATINGS
Symbol
Limit
Unit
Pd
780*
mW
Operating temperature
Topr
-35~+95
℃
Storage temperature
Tstg
-55~+150
℃
Iomax
40
mA
IAL
15
mA
VAL
60
V
Parameter
Power dissipation
Output current
AL Signal output current
AL Signal output voltage
Tjmax
150
Junction temperature
*
To use at temperature above Ta=25℃ reduce 6.24mW/℃.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
℃
〇OPERATING CONDITIONS
Parameter
Symbol
Operating supply voltage range
Vcc
Limit
3.5~Vcz
Operating supply current range
FG output voltage range , AL output
voltage range
Hall input voltage range
Icc
1~30
mA
VSI
0~48
V
VH
0~Vcz-1.5
V
*This product is not designed for production against radioactive rays.
*This document may be strategic data subject to COCOM regulations.
REV. B
Unit
V
2/4
〇ELECTRICAL CHARACTERISTICS (Unless otherwise specified Ta=25℃,Vcc=5V)
Limit
Unit
Min.
Typ.
Max.
Internal voltage
Vcz
5.5
6.0
6.5
V
Circuit current1
Icc1
0.5
1.5
3.0
mA
Circuit current2
Icc2
4
6.7
9.5
mA
Hall input hysteresis voltage
Vhys
5
15
25
mV
Lock detection ON time
TON
0.25
0.5
1
sec
Lock detection OFF time
TOFF
2.5
5
10
sec
Output H voltage
VOH
Vcc-0.5 Vcc-0.2
Vcc
V
Output L voltage
VOL
0.2
0.5
V
Hall output L voltage
VFGL
0.15
0.5
V
Hall output leak current
IFGL
0
10
μA
Alarm output L voltage
VALL
0.15
0.5
V
Alarm output leak current
IALL
0
10
μA
*
H+:3V,H-:2V,Output,FG,AL terminal are open.
**
Hall-input is 100Hz square wave.Output is connected with 1kΩto ground.
FG and AL are connected with 50kΩto Vcc.
Parameter
Symbol
REV. B
Conditions
Icc=10mA
*
**
Io=-10mA
Io=10mA
IFG=5mA
VFG=48V
IAL=5mA
VAL=48V
3/4
〇PACKAGE OUTLINES
5.0±0.2
5
0.3Min.
6.2±0.3
4.4±0.2
8
6712A
1.5±0.1
0.11
1
4
Lot No.
1.27
0.4±0.1
0.15±0.1
0.1
SOP 8(UNIT:mm)
〇BLOCK DIAGRAM
〇Terminal name
Vcc
Pin No.
OUT2
1
8
1
2
3
4
5
6
7
8
REG
TSD
OUT1
H+
2
+
-
Control
7
HALL
AMP
FG
AL
3
LOCK
DETECTION
AND
AUTO
RESTART
6
H-
GND
4
5
REV. B
Terminal
name
Vcc
H+
AL
HGND
FG
OUT1
OUT2
4/4
〇CAUTIONS
1) Absolute maximum ratings
There is possibility of destruction in using beyond the absolute maximum rating. In case of destruction,
a failure mode can not be defined (short mode or open mode). Therefore when special mode is
envisaged where absolute maximum rating may be exceeded, please take a physical safety measure
such as fuse.
2) Reverse connection of power supply connector
Reverse connection of power supply connector may break IC. Take a measure against reverse
connection destruction such as inserting a diode between power supply and Vcc terminal.
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
4) GND potential
Ensure that the potential of GND terminal is the minimum potential in any operating condition. Also
ensure that all terminals except GND terminal do not fall below GND voltage including transient
characteristics. However, it is possible that the motor output terminal may deflect below GND because
of influence by back electromotive force of motor. 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
Consider the power dissipation under actual use condition and apply thermal design with sufficient
margin.
6) Mounting failures
In attaching IC to printed board, pay enough attention to the direction and dislocation of IC. Mounting
failures may break IC. In addition, destruction is also possible when circuit is shorted by foreign
substance brought between outputs or between output and power supply - GND.
7) Operation in strong electromagnetic field
Use in strong electromagnetic field may cause malfunction, please be careful.
8) ASO
Please consider that the output Tr does not exceed the absolute maximum rating and ASO.
9) Thermal shut down circuit
This IC has thermal shut down (TSD) circuit. Operation temperature is 175℃(typ.) and has a hysteresis
width of 25℃(typ.). When IC chip temperature rises and TSD circuit works, the output terminal
becomes an open state. TSD circuit is simply for the purpose of intercepting IC from overheating, and
not for protecting and assuring IC. Therefore do not continue to use IC thereafter with this circuit
operating and do not use IC assuming the operation of this circuit.
10) Inspection with a set board
When connecting a capacitor to a pin with low impedance in inspection on a set board, stress may
possibly be applied to IC, therefore be sure to apply discharging in each process. In attaching to and
detaching from jigs in inspection process, be sure to turn off power before connecting, and turn off
power before removing IC. In addition, apply grounding to assembling process as a measure of
anti-static electricity, and use full caution in transporting and storing.
11) GND wiring pattern
When there are small signal GND and large current GND, separate the large current GND pattern from
small signal GND pattern. It is recommended to apply one-point grounding at the reference point of the
set in order that resistance of wiring pattern and large current do not cause change of voltage of small
signal GND. Please be cautious not to fluctuate the wiring pattern of GND of external mounted parts.
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.
REV. B
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
R1120A
Similar pages