NCP383LMUAJAGEVB

Test Procedure for the NCP383LMUAJAGEVB Evaluation Board This test procedure is given as an example for 800mA OCP version and EN active high. Equipments needed:  Power supply 5V, 3A.  1 potentiometer 100Ω, 10W.  1 oscilloscope with 3 voltage probe and 1 current probe. Set-up      VCC = 5V VIN=3.3V Device disable, EN=5V with ENABLE H/ENABLE L switch. Connect R3, R4 to VCC (Flag pull-up) with FLAG1&FLAG2 PULL UP jumper. Connect potentiometer between OUT1 or OUT2 and GND pin. Turn-on sequence  Enable device, EN=0V with ENABLE H/ENABLE L switch. Over current protection  Sense IN (Yellow), OUT (Blue), FLAG (Green) voltage and IOUT (Purple).  Enable device, EN=5V with ENABLE H/ENABLE L switch.  Decrease resistance value of the potentiometer until FLAG goes to 0V. Regulation mode  Sense IN (Yellow), OUT (Blue), FLAG (Green) voltage and IOUT (Purple).  Enable device, EN=5V with ENABLE H/ENABLE L switch.  Decrease resistance value of the potentiometer until regulation mode occurs. Turn off  Disable device, EN1&2=5V with ENABLE H/ENABLE L switch.  Remove Vin voltage  Remove Vcc voltage 1/24/2014 1 www.onsemi.com 1/24/2014 2 www.onsemi.com