AATIAN70 Datasheet, PDF(5/10 Page) SiGe Semiconductor, Inc. – CMOS Low Voltage LDO Linear Regulator

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AATIAN70 Datasheet, PDF (5/10 Pages) SiGe Semiconductor, Inc. – CMOS Low Voltage LDO Linear Regulator

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EV-137

AAT3244 EVAL: 300mA Adjustable Dual

CMOS Low Voltage LDO Linear Regulator

Test: Load Transient Response

1. Configure the specified test equipment as shown in Figure 4.

2. Enable dual LDO by JP1 and JP3 to the âONâ position, as shown in Figure 2. Connect both inputs of UUT

to VCC by JP2 and JP4 as shown in Figure 2.

3. Generate the step output load using a PWM (set VPP = 5V at 5KHz), a Power MOSFET, and adjustable

resistors (R7, R8).

4. Adjust R7 and R8 to achieve the designed output current while monitoring the step output current and the

output voltage response (AC coupling) on the oscilloscope.

5. Repeat step 4 for different step output currents.

Iload

Vout(AC)

Figure 4: AAT3244 Evaluation Board Connection Diagram for Load Transient Response.

EV-137.2007.08.1.0

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