Power Management ICs
LDO Regulators
- How are local power supply ICs used?
- What kinds of linear regulators such as LDOs exist?
- Do LDO ICs need external parts?
- About absolute maximum ratings (Understanding datasheet values)
- About electrical characteristics of LDO (Understanding datasheet)
- Is it possible to use LDO regulators at low supply voltage? What is the minimum voltage required for their proper operation?
- How can a low-noise power supply be created using an LDO regulator?
- What is the resistance of the pulldown resistor connected to the CONTROL pin of the LDO regulator?
- How does overcurrent protection work in an LDO regulator?
- When the operating mode of the load-side IC is changed, the output voltage of an LDO regulator drops, causing the IC to malfunction. What can I do to prevent a malfunction?
- What is the thermal shutdown (TSD) that is available with LDO regulators?
- Are there any LDO regulators with adjustable output voltage available (requiring external resistors)?
- What type of capacitor is suitable for use with an LDO regulator?
- What is the quiescent current of an LDO?
- Which characteristics in a datasheet should I refer to in order to determine whether a given LDO maintains a regulated output voltage even when input voltage varies?
- The output voltage of an LDO drops when I increase the output current even though it is operating within the rated conditions. What type of LDO should I choose to avoid such a problem?
- A small noise is superimposed on the output voltage of an LDO. What can I do to reduce the noise?
- What voltage is required at the CONTROL terminal to enable an LDO?
- Why does the LDO output voltage oscillate?
- How can I quickly bring the output voltage of a circuit with an LDO to zero in order to set a power supply sequence for the load IC?
- Why is the output of an LDO disabled when its input voltage decreases?
- How can I prevent the output voltage from overshooting following the application of the control voltage to an LDO?
- Large inrush current flows when an LDO is enabled. What can I do to prevent this?
- Is the power-on sequence of the input voltage (VIN) and the control voltage (VCT) of an LDO significant?
- What is the purpose of the capacitor connected to one of the external resistors for an adjustable-output LDO?
- Is it OK to reverse-bias an LDO, causing its output voltage to become higher than the input voltage?
- How can I calculate the junction temperature of an LDO?
- Is there a low-current LDO with an input voltage greater than 5 V?
- If you want to step down the supply voltage, select either DCDC converter or LDO regulator?
Load switch ICs
- What is an output discharge function of the load switch IC?
- What is the input-tolerant function?
- Is it OK to apply the input voltage following the application of an “on” signal to the CONTROL terminal?
- How can I suppress inrush current with a load switch IC?
- What is the value of the pull-down resistor connected to the active-High CONTROL terminal of load switch ICs?
- Does the overvoltage lockout of the load switch IC recover automatically?
- Does the undervoltage lockout function of the load switch IC provide a hysteresis?
- What is the FLAG output function of the load switch IC?
- What is the hold time of a load switch IC?
- What are the Auto Selection and Manual Selection modes?
- What is a break-before-make circuit?
- What is reverse-current blocking using external back-to-back MOSFETs?
- What is the difference between true reverse-current blocking and reverse-current blocking?
- How does a load switch IC operate if overcurrent protection is tripped?
- How can I calculate the power dissipation and junction temperature of a load switch IC?
eFuse ICs
- What is eFuse IC (electronic fusing)?
- What are the advantages of using eFuse ICs over glass fuses and polyswitches?
- What applications are eFuse IC (electronic fuses) used for?
- Can eFuse IC (electronic fusing) be used to protect USB VBUS from short circuits and IEC62368 Qualification?
- What are the differences between eFuse IC (electronic fuses) and load switch ICs?
- What functions are built into eFuse IC (electronic fusing)?
- When a spike-voltage is applied to the input or output terminals of eFuse IC (electronic fuse),How do I take measures?
- How do I use eFuse IC (electronic fuses) and load switch ICs separately?
- How does overcurrent protection of eFuse IC (electronic fuses) work?
- How does short-circuit protection of eFuse IC (electronic fuses) work?
- What is the difference between the overcurrent protection and the short-circuit protection of eFuse IC?
- How does thermal shutdown(TSD) of eFuse IC (electronic fuses) work?
- How does overvoltage protection on eFuse IC (electronic fuses) work?
- What is the slew rate control function of eFuse IC (electronic fuses) intended to do? And how does it works?
- What is the under voltage lockout (UVLO) function of eFuse IC (electronic fuses) intended to do? And how does it works?
- Can eFuse IC (electronic fuse) be used for hot-swap？
- Does the eFuse IC (electronic fuse) have reverse current blocking(RCB) function?
LED Drivers
- What is the difference between absolute maximum ratings and operating conditions?
- What should be the power supply and input turn-on order/descent?
- Are power supply decoupling capacitors required?
- How to calculate current consumption and power consumption?
- How many ICs per reel of taping?
- What is the definition of Power dissipation?
- How to set the output current.
- What wattage resistor should we choose for the EXT terminal？
- Are there any problems if the SCK waveform is dulled that cascaded LED drivers are used?
Power Supply ICs
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