9/8/2015 2 www.onsemi.com
Test Procedure:
1. Connect the test setup as shown above.
2. Make sure the load is not enabled.
3. Apply an enable voltage V
EN
=0V. Apply an input voltage, V
IN
= 13.2 V. V
OUT
should be 0V.
4. Apply an enable voltage V
EN
=3V. Verify that the output voltage is 3.8 V +/-
0.1 V.
5. Set up the load to 2.5A and enable it. Verify that the output voltage is still
3.8 V +/-0.1 V.
6. Change the input voltage to 39 V. Verify that the output voltage is 0 V.
7. Change the input voltage to 36 V. Verify that the output voltage is 3.8 V +/-
0.1 V.
8. Change the input voltage to 3.8 V. Verify that the output voltage is above 2.5
V.
9. Change the input voltage to 3.0 V. Verify that the output voltage is 0 V.
10. Change the input voltage to 4.5 V. Verify that the output voltage is 3.8 V +/-
0.1 V.
11. Apply an enable voltage V
EN
=0V. V
OUT
should be 0V.
12. Turn off the DC sources.
