NJW4184DL3-05A 查看數據表（PDF） - Japan Radio Corporation

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NJW4184DL3-05A

High Voltage Very low current consumption Io=300mA Low Dropout Regulator

Japan Radio Corporation  

NJW4184

*The notes of the evaluation when the VO 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 the VO pin and GND or using output capacitors that have ESR more than 2Ω like a

tantalum or aluminum electrolytic capacitor.(see below figure)

(a)In case of insert Schottky barrier diode between the VO pin to GND

V IN

V IN

VOUT

VOUT

NJW 4184

SBD

GND

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

VIN

VIN

VOUT

NJW4184

VOUT

GND

Connecting resistance(2Ω or more)in series.

(in case of ESR of COUT is low)

-8-

Ver.2012-06-27

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