NJW4186-T1

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Ver.2013-06-25

*The notes of the evaluation when output pin is shorted to GND

When evaluated short circuit test, the IC may break down because of regenerated energy by the parasitic inductance

included in

wiring pattern.

It phenomenon appears conspicuously when output voltage is high(Vo=8.0V or more)or connected to inductive load.

In case of short circuit in actual application, not likely to destruction of IC because of some of Resistance exist

between load.

If happened above phenomenon by the short circuit test with the actual application, recommend connecting schottky

barrier diode

(SBD) between Vo pin and the GND or using output condensers that have ESR more than 2ohrm like a

tantalum or aluminum electrolytic capacitor.(see below figure)

NJW4186

GND

SBD

(b) In case of using the electrolysis condenser or insert series resistance

NJW4186

GND

Connecting resistance(2ohrm or more)in series.