Test Procedure for the NCP348G Evaluation Board 3/22/2007 Equipment 0-7V, 2A supply. 5V supply. (Low current) 2.5 ohms / 10W resistor (minimum 10 W) Multimeter. Test Procedure Setup *Connect VIN supply between Vin and GND: set to 0V *Connect J2 shunt *Connect EN-state shunt on the left hand EN_state Connect +5V supply on FLAG_POWER pin and EN_POWER pin. (use same supply) Connect 2.5 ohms load between Vout and GND. Part 1 1. Set VIN supply at 0.5V. Check Flag level = + 5V on FLAG pin. 2. Set VIN supply at 1.2V. Check Flag level = + 0V on FLAG pin. Check Vout=0V 3. Set Vin supply = 3.0V. Measure Vin supply current consumption. (Typical 70µA. Max 100 µA). Check Vout = 0 V 4. Set Vin supply = 5V. Measure Vin supply current (around 2A) 5. Measure Voltage between Vin and Vout test points. Calculate Rdson to check solder. Rdson= (Vin-Vout)/I vin. (typical 70m ohms. Max 120 mohms) 6. Disconnect output load. Check Vout level. Vin = Vout = 5V. Check Flag level = 5 V 7. Measure current consumption. Typical 170µA. Max 300µA. Part 2 EN_state 1. Put EN_state shunt to right hand. Measure Vout = 0V, FLAG level= +5V EN_state 2. Put EN_state shunt to left hand. 3. Set Vin = 7V. Measure Vout = 0V, Check FLAG level = 0 V Turn Off 1. Decrease Vin level =0V. 2. Disconnect EN and FLAG supply. 3. Disconnect Vin supply.