10 matches 1 of 10

Should I connect a resistor in series to a control terminal of a regulator IC?
A resistance of connecting for control terminal ( ON/OFF terminal ) of a series regulator can be decreased a self current consumption.…
How should I calculate a line regulation of a series regulator?
A line regulation of a series regulator is calculated on following formula (1).
How should I calculate a load regulation of a series regulator?
A load regulation of a series regulator is calculated on following formula. Vo1---Output voltage at a minimum output current of…
How should I calculate an efficiency of a regulator?
The self-power consumption is given by follow formula. Some type of product is increased a self-current consumption IQ with the increase…
Could I get IBIS model for an analog IC( op amp or regulator )?
IBIS model is generally fitting for an input / output terminal behaivior model of the digital IC. It is generally used the signal integrity analysis at…
I want to generate DC voltage by a transformer, a rectifier and a series regulator. What should I be careful about?
The secondary of transformer might be occurred more than 2 times output voltage when the primary of transformer is cut off immediately. Therefore, it should be connected IC of the high breakdown voltage to…
Do NJM7800 and NJM7900 series guarantee a dropout voltage in a data sheet?
It is indirectly guaranteed in a line regulation test condition. A minimum input voltage is described in condition of Line Regulation item. A difference between minimum input voltage and output voltage is dropout voltage.
Can I apply to an input voltage what exceeds a dropout voltage in absolute maximum ratings to NJM317 at a typical application?
We cannot recommend to apply the input voltage exceeded 40V in absolute maximum ratings. NJM317 might be operated normally at a static condition…
What is a reverse current protection circuit in NJM12884? Please tell me where a specification value of this reverse current protection is mentioned in the data sheet.
This protection circuit prevents NJM12884 from flowing the large reverse current when output voltage is higher than input voltage.
I want to measure NJM7805 phase margin on a PCB. What should I do it?
It is impossible to measure the phase margin as the NJM7805 feedback circuit is closed in IC. We have to apply a small AC signal…