Test Procedure for the NCP370GEVB Evaluation Board Test Procedure: 1. Place /REV strap and /DIR strap on left side (“1” logic) (connected to Vbat, through pull up resistor) 2. Let Battery strap opened. 3. Connect a Battery or power supply (4.2V) on Battery test point. (min 2A capability) 1/27/2010 1 of 5 www.onsemi.com 4. Connect strap on Ilim. 1/27/2010 2 of 5 www.onsemi.com 5. Select I limit threshold with pull down resistors connected on pin 7: SW1 0 0 1 1 SW2 0 1 0 1 I OCP 500mA 1A 1.5A 1.5A R1= 70K R2= 14K Disable Mode: 6. Connect 10 V capability Vin Supply on IN1 test point. a. Set power supply to 5V Ö Check Vout = 0V and LED = off 1/27/2010 3 of 5 www.onsemi.com Direct Mode: 7. Switch /DIR from left to right, 1 logic level to 0 logic level 8. Check Vout=5V and Flag LED is still off 9. Set Vin=7V 10. Check Flag LED = on, and Vout is 0V. 11. Switch /REV from left to right, 1 logic level to 0 logic level 1/27/2010 4 of 5 www.onsemi.com 12. Check Flag LED = off, and Vout = Vin = 7V. Disconnect Vin supply Reverse Mode: 13. Connect Set /DIR=1, /REV=1 Disconnect Vin Power Supply from IN test points. Connect accessory on IN1 or IN2 test points. Put strap to connect Battery to Vout 14. Set /DIR=1, /REV=0: Vout= Vin If I accessory < I limit then Vin = Vout – Rdson x I If I accessory > I limit then Vin = 0 (Current regulation) Power off. 15. Set /DIR=1, /REV=1 16. Disconnect accessory 17. Disconnect Battery 1/27/2010 5 of 5 www.onsemi.com