Table 1: AAT1154 Evaluation Board Specifications.

Figure 2: AAT1154 Evaluation

Figure 3: AAT1154 Evaluation

Board PCB Top Side.

Board PCB Bottom Side.

Test Equipment

1.

6.0V 10A laboratory power supply: HP33401A or equivalent.

2.

DC 0A to 3.0A load capable of operation down to 1.0V: Keithley 2400 or equivalent.

When using the Keithley 2400, set the meter to zero volts in voltage source mode and set the load cur-

rent by varying the current compliance (maximum current) of the meter.

3.

DC voltmeter: HP34401A or equivalent.

4.

Oscilloscope: Tektronix TDS744A or equivalent.

Setup and Test

A: Load and Line Regulation (see connection diagram in Figure 4)

1.

Apply a DC power supply and DC voltmeter across input voltage terminals: V

GND (negative terminal or return).

2.

Apply a DC load and DC voltmeter to output terminals.

3.

Vary the load from 0 to 3.0A and the input voltage from 2.7V to 5.5V while monitoring the output voltage.

4.

The output voltage as measured at the output terminals of the evaluation board should not vary by more

than ±3% of the nominal voltage.

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.

Specification

Test Conditions

Min

Typ

Max

Units

Input Voltage

2.7

3.6

5.5

V

Output Error Voltage

±3

%

Output Current

0

3.0

A

2

EV-104.2005.01.1.0

EV-104

AAT1154EVAL

1MHz 3A Buck DC/DC Switch Mode Regulator