An excess in the absolute maximum rating, such as supply voltage, temperature range of operating conditions, etc., can break down devices,
thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute
maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc.
（2）The power supply and the GND lines
Design PCB pattern to provide low impedance for the wiring between the power supply and the GND lines. Please take care about interference by
common impedance of the wiring pattern when there are two or more power supply and GND line. For the GND line, please note the
separation of the large current route and the small signal route including the external circuit. Furthermore, for all power supply terminals to ICs,
mount a capacitor between the power supply and the GND terminal. At the same time, in order to use an electrolytic capacitor, thoroughly check to
be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus
determining the constant.
（3）GND voltage
Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state.
（4）Short circuit between terminals and erroneous mounting
In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs.
Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND
terminal, the ICs can break down.
（5）Operation in strong electromagnetic field
Be noted that using ICs in the strong electromagnetic field can malfunction them.
（6）Input terminals
In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause
interference with circuit operation, thus resulting in a malfunction and then breakdown of the input terminal. Therefore, pay thorough attention not to
handle the input terminals, such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic element will
operate. Furthermore, do not apply a voltage to the input terminals when no power supply voltage is applied to the IC. In addition, even if the power
supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of electrical
characteristics.
（7）External capacitor
In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the
nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc.
（8）Thermal design
Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use.
Moreover, please use it within the range where output Tr doesn't exceed the rated voltage and ASO.
（9）Rush current
In CMOS IC, when the power supply is turned on rush current might flow momentarily in logical internal irregular state. Therefore, note
drawing the capacity of the power supply coupling, the power supply, and width and drawing the GND pattern wiring, please.
（10）Test terminal and unused terminal processing
Please process a test terminal and unused terminal according to explanations of the function manual and the application note, etc. to be
unquestionable while real used. Moreover, please inquire of the person in charge of our company about the terminal without the explanation
especially.
（11）Content of material
The application notes etc. are the design material to design the application, and no one of the content securing it. Please decide the
application after it examines enough and it evaluates it including external parts.
REV. A
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, commu-
nication 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
[i=s] This post was last edited by ove learning makes me happy on 2020-2-19 09:43 [/i]1. Function Overview
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