0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

100

1000

I

-mA

OUT

PowerSaveMode

MODE/DATA =0

ForcedPWMMode

MODE/DATA =1

V

=1.8V

OUT2

V

=2.7V

IN

V

=3.6V

IN

V

=5V

IN

V

=2.7V

IN

V

=3.6V

IN

V

=5V

IN

0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

100

1000

PowerSaveMode

MODE/DATA =0

ForcedPWMMode

MODE/DATA =1

V

=2.7V

IN

V

=3.6V

IN

V

=2.7V

IN

V

=3.6V

IN

V

=5V

IN

V

=5V

IN

V

=1.1V

OUT1

I

-mA

OUT

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Bill of Materials

4.1

Test Result

The start-up waveform (Figure 3) specifies the sequencing order that is required.

Figure 3. Sequencing in Start-up Waveform

Figure 4. Efficiency V

Figure 5. Efficiency V

7

SLVA343A – June 2009 – Revised May 2010

Medium Integrated Power Solution Using a Dual DC/DC Converter and an LDO

Copyright © 2009–2010, Texas Instruments Incorporated