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| AATIAN22 Datasheet, PDF (3/11 Pages) SiGe Semiconductor, Inc. – 3MHz Fast Transient 400mA Step-Down Converter | |||
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EV-139
AAT1149 EVAL: 3MHz Fast Transient
400mA Step-Down Converter
Setup and Test
Test: Line-Load Regulation
1. Configure the specified test equipment as shown in Figure 2.
2. Enable UUT by connecting the jumper to the âONâ position.
3. Turn on the input power supply and set to desired input voltage based on the DC voltmeter.
4. Vary the output load from 0 to 400mA and vary the input voltage from 2.7V to 5.5V while monitoring the
output voltage.
5.
%
Error
=
VOUT - VNOMINAL
VNOMINAL
where
VNOMINAL
is
the
output
voltage
at
10mA
output
current.
Figure 2: AAT1149 Evaluation Board Connection Diagram for Line and Load Regulation.
EV-139.2007.08.1.0
3
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