a wide dynamic range.（PreVcc=PowVcc=8V, RL=8Ω、6.0Ｖ(typ.)）
・The
thermal shutdown circuit contained.
・Separating
Vcc into Pre and Power (Power divides into CH1/2 and
CH3/4), can make better Power efficiency.
・Switches
CH2 input by Control input terminal(CNT).
・Incorporates
mute function by CNT terminal and mute terminal.
・A
variable regulator is built in.
Parameter
Symbol
Limits
Unit
○Absolute
maximum ratings(Ta=25℃)
Power supply voltage
Power dissipation
Operating temperature range
Storage temperature
Junction temperature
PreVcc,PowVcc
Pd
Topr
Tstg
Tjmax
15
1.1
*1
4.0
*2
-40∼+85
-55∼+150
+150
Ｖ
Ｗ
℃
℃
℃
*1
70mm×70mm×1.6mm,occupied copper foil is less than 3%,glass epoxy standard board mounting.
Reduce power by 8.8mW for each degree above 25℃.
*2
Exclusive standard board mounting. Reduce power by 32.0mW for each degree above 25℃.
*3
This rating of must not exceed Pd、ASO、Tj=150℃.
○Operating
conditions
(Set the power supply voltage taking allowable dissipation into considering.)
PreVcc
PowVcc
5.5
∼
14
（Ｖ）
*4
4.5
∼
PreVcc（Ｖ）
*4
When regulator isn’t used, 4.5 ~ 14(V)
Status of this document
The Japanese version of this document is the formal specification. A customer may use this translation version only for a reference to help reading the formal version.
If there are any differences in translation version of this document, formal version takes priority
.
Be careful to handle because the content of the description of this material might correspond to the labor (technology in the design, manufacturing, and use) in foreign country exchange and
We are careful enough for quality control about this IC. So, there is no problem under normal operation, excluding that it exceeds the absolute maximum ratings. However, this IC
might be destroyed when the absolute maximum ratings, such as impressed voltages or the operating temperature range, is exceeded, and whether the
destruction is short circuit mode or open circuit mode cannot be specified. Please take into consideration the physical countermeasures for safety such as fusing, if a particular
,
mode that exceeds the absolute maximum rating is assumed.
2.
3.
Connecting the power line to the IC in reverse polarity (from that recommended) will damage the part. Please utilize the direction protection device as a
diode in the supply line and motor coil line.
Due to return of regenerative current by reverse electromotive force, using electrolytic and ceramic suppress filter capacitors (0.1µF) close to the IC power
input terminals (Vcc and GND) are recommended. Please note the electrolytic capacitor value decreases at lower temperatures and examine to dispense
physical measures for safety.
And, for ICs with more than one power supply, it is possible that rush current may flow instantaneously due to the internal powering sequence and delays.
Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of wiring.
Reverse polarity connection
Power supply line
4.
5.
GND line
Please keep the GND line the lowest potential always, and check the GND voltage when transient voltages are connected to the IC.
Do not exceed the power dissipation (Pd) of the package specification rating under actual operation, and please design enough temperature margins.
This product has exposed the frame to the back side of the package, but please note that it is assumed to use heat radiation efficiency by the heat
radiation for this part. Please take the heat radiation pattern on not only the surface of the substrate but also the back of the substrate widely.
Do not mount the IC in the wrong direction and displacement, and be careful about the reverse-connection of the power connector. Moreover, this IC
might be destroyed when the dust short the terminals between them or GND.
Strong electromagnetic radiation can cause operation failures.
Do not exceed the maximum ASO and the absolute maximum ratings of the output driver.
The TSD is activated when the junction temperature (Tj) exceeds Tjmax, and the output terminal is switched to OPEN.
The guarantee and protection of set are not purpose. Therefore, please do not use this IC after TSD circuit operates, nor use it for assumption that
operates the TSD circuit.
If a large capacitor is connected between the output driver and GND, this IC might be destroyed when Vcc becomes 0V or GND, because the electric
charge accumulated in the capacitor flows to the output driver. Please set said capacitor to smaller than 0.1µF.
The stress might hang to IC by connecting the capacitor to the terminal with low impedance. Then, please discharge electricity in each and all
process. Moreover, when attaching or detaching from jig in the inspection process, please turn off the power before mounting the IC, and turn on after
mounting the IC, and vice versa. In addition, please take into consideration the countermeasures for electrostatic damage, such as giving the earth in
assembly process, transportation or preservation.
This IC is a monolithic IC, and has P
+
isolation and P substrate for the element separation. Therefore, a parasitic PN junction is firmed in this P-layer
and N-layer of each element. For instance, the resistor or the transistor is connected to the terminal as shown in the figure below. When the GND
voltage potential is greater than the voltage potential at Terminals A on the resistor, at Terminal B on the transistor, the PN junction operates as a parasitic
diode. In addition, the parasitic NPN transistor is formed in said parasitic diode and the N layer of surrounding elements close to said parasitic diode.
These parasitic elements are formed in the IC because of the voltage relation. The parasitic element operating causes the interference of circuit operation,
then the wrong operation and destruction. Therefore, please be careful so as not to operate the parasitic elements by impressing to input terminals lower
voltage than GND (P substrate). Please do not apply the voltage to the input terminal when the power-supply voltage is not impressed. Moreover,
please impress each input terminal lower than the power-supply voltage or equal to the specified range in the guaranteed voltage when the
power-supply voltage is impressing.
Resistor
Transistor(NPN)
Terminal-A
Terminal-A
B
Parasitic
element
C
E
P
+
P
P
+
Surrounding
elements
P-Substrate
Parasitic
element
Parasitic
element
P-Substrate
Parasitic
element
GND
GND
GND
GND
Terminal-B
C
B
E
Terminal-B
Thermal design
6.
7.
8.
9.
Short circuit mode between terminals and wrong mounting
Radiation
ASO (Area of Safety Operation)
TSD (Thermal Shut-Down)
10.
11.
Capacitor between output driver and GND
Inspection by the set circuit board
12.
Input terminal
P
+
P
P
+
Simplified structure of IC
13.
If small signal GND and large current GND exist, disperse their pattern. In addition, for voltage change by pattern wiring impedance and large current
not to change voltage of small signal GND, each ground terminal of IC must be connected at the one point on the set circuit board. As for GND of external
parts, it is similar to the above-mentioned.
Regulator output (REGOUT) Please descend the oscillation prevention beforehand, and use the capacitor connected between -GND after confirming
actual operation like the temperature characteristic etc. enough.
Earth wiring pattern
14.
REV. A
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level
of reliability and the malfunction of which would directly endanger human life (such as medical
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