B. Short-Circuit and Over-Temperature Protection

1.

Raise the input voltage to 5.5V.

2.

Apply a short from V

3.

Remove the short and verify that output returns to its initial value.

C. Enable Input and Power OK Output

1. Short the enable pin to GND. The output should decay to zero.

2. Remove the short applied to the enable pin. The output should recover to its initial value.

Figure 4: AAT1155 Connection Diagram.

Voltmeter

1.500V

Load

0-2.5A

3.650V

0.147A

Power Supply

Voltmeter

3.600V

Oscilloscope

EV-107.2005.01.1.0

3

EV-107

AAT1155 EVAL

1MHz 2.5A Buck DC/DC Converter