FAQ：How to use
FAQ：How to use
- Is there any IC to realize system reset by pressing a reset button for a certain time?
- Is there any IC which is not to stop applications but to make them operate normally even when the coin cell or air cell is inserted in reverse?
- What function does an OVP switch have? Where is it used?
- Could you tell us a handling method about the SAW Filter device?
- How should I select an inductor for a DC/DC converter?
- What is externally adjustable phase compensation?
- In what way is a DC/DC converter for energy harvesters different from other converters?
- When the input voltage was raised steeply from a low value, the output of the DC/DC converter may overshoot. Why did this happen? How should I take measures against this problem?
- What is the supply current of an LDO regulator? What are the merits and demerits of using an LDO regulator with low supply current?
- What is the difference between LDO's shutdown current(1) and quiescent current(2)? How much voltage does an LDO regulator output at its shutdown mode?
- What are the characteristics of a negative voltage LDO regulator? Where is it used?
- What is a voltage tracker? How is it used?
- How should external components be located on a PCB?
- At what point is a source voltage applied to a CE pin?
- What must be taken into account to construct a phase compensation circuit?
- What does externally adjustable output voltage mean?
- What will happen if the CE is at high impedance?
- How can I calculate the dropout voltage of an LDO regulator?
- What will happen if the output voltage becomes higher than the input voltage? How can I take measures against the state?
- Tell me the order to connect the terminals of a protection circuit using a multi-cell Li-ion battery protection IC to the battery cell’s terminals.
- For what are Li-ion battery second protection ICs necessary? In what applications are they used?
- In what order should I connect the input pins of a Li-ion battery second protection IC? How does an erroneous connection order affect the IC and the system?
- Can a Li-ion battery protection IC function as a protection for a Li-ion capacitor?
- Is there any IC applicable for protecting a 48 V battery pack (12 or 15 cells connected in series)? What should I take into account to use the IC?
- What determines the accuracy of time by RTC ICs?
- How many seconds in monthly rate are equivalent to ±20ppm accuracy of time?
- What is the difference between supply voltage and time keeping voltage on datasheets of real time clock ICs?
- Is there any possibility to occur Year 2038 problem on Nisshinbo Micro Device RTCs?
- If an impossible time is set to an RTC IC, what happens?
- I noticed the time data crash of an RTC. What could be the possible reasons?
- Are there any restrictions on the order in which the power supply voltage and the control voltage are turned on?
- Can the control voltage be set higher than the supply voltage?
- It looks that some of your LNAs have a bypass mode function. In what case is the function used?
- Can a DC voltage be applied to the SAW filter terminal of the FEMs (Front-End Module) for GNSS? Are additional DC blocking capacitors required?
- Is it possible to use a DC blocking capacitor with a value not described in the datasheet for the RF terminals?
- Are there any cases where DC blocking capacitors are required for RF switches not needing DC blocking capacitors connected to the RF terminals?
- In the RF switches, what is the best way to handle unused RF terminals?
- Are there any precautions in storing power amplifiers?
- Do your power amplifiers support the MIPI RFFE provided by chipset vendors?
- What should be considered when using reset ICs?
- What is Nch open drain output mentioned as a feature of a voltage detector? How should I estimate the output voltage when the output is at 'L' state?
- What must be taken into account if CE pin is tied to VDD pin? Is it necessary to pull up CE pin to VDD pin by a resistor?
- How should I measure the efficiency of a DC/DC converter? What should be taken into consideration for the measurement?
- How can I figure out the efficiency of an LDO regulator?