AATIAN70 Datasheet, PDF (4/10 Pages) SiGe Semiconductor, Inc. – CMOS Low Voltage LDO Linear Regulator

EV-137
AAT3244 EVAL: 300mA Adjustable Dual
CMOS Low Voltage LDO Linear Regulator
Test: Line Transient Response
1. Configure the specified test equipment as shown in Figure 3.
2. Enable dual LDO by JP1 and JP3 to the ‘ON’ position, as shown in Figure 2. Connect both inputs of UUT
to V_CC by JP2 and JP4 as shown in Figure 2.
3. Use Line Transient Response board to generate the step input voltage supply by setting the first power
supplies to 3.6V and the second one to 4.2V.
4. Toggle the input voltage from 3.6V to 4.2 V by setting the magnitude of the PWM to 5Vpp at 5MHz while
monitoring the AC input voltage and the AC output voltage on the oscilloscope.
Vin(AC)
Vout(AC)
Figure 3: AAT3244 Evaluation Board Connection Diagram for Line Transient Response.
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EV-137.2007.08.1.0