AATIAN70 Datasheet, PDF (6/10 Pages) SiGe Semiconductor, Inc. – CMOS Low Voltage LDO Linear Regulator

EV-137
AAT3244 EVAL: 300mA Adjustable Dual
CMOS Low Voltage LDO Linear Regulator
Test: Quiescent Current vs. Input Voltage
1. Configure the specified test equipment as shown in Figure 5.
2. Replace the input power supply with a Keithley 2400 3A source meter or equivalent. Set V_SRC to the
designed input voltage (V_SRC = V_OUT + 1V), and set the I_COM to 200µA.
3. Remove the output loads (open circuit).
4. 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.
5. Turn on the Keithley and read the compliance current (quiescent current).
6. Vary the input voltage V_SRS = V_OUT + 1V while monitoring the corresponding compliance current.
Figure 5: AAT3244 Evaluation Board Connection Diagram for Quiescent Current.
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EV-137.2007.08.1.0