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NJW4185DL3-05 Datasheet(PDF) 6 Page - New Japan Radio |
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NJW4185DL3-05 Datasheet(HTML) 6 Page - New Japan Radio |
6 / 11 page NJW4185 - 6 - Ver.2013-04-17 *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) (a)In case of insert Schottky barrier diode between output pin - GND NJW 4185 VIN VOUT GND VOUT VIN SBD (b) In case of using the electrolysis condenser or insert series resistance NJW4185 VIN VOUT GND VOUT VIN Connecting resistance(2ohrm or more)in series. (in case of ESR of COUT is low) |
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