Micrel, Inc.
MIC5159
June 2006
10
M9999-062706
Designing with MIC5159
The following section details:
• Application examples of possible input/output
configurations with related schematics
designator.
• Schematics with “Bill of Materials”
recommendation, dropout performance and
maximum output current for each FET
combination.
• Further advice on MOSFET selection.
3.3V
IN
to 2.5V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
1.0A 10µF Si4433DY SO-8 C
2.5A 22µF Si4433DY x2 SO-8 D
2.5A 10µF SUB15P01-52 D2PAK H
3.5A 44µF Si4433DY x3 SO-8 E
5.0A 44µF Si4433DY x4 SO-8 F
5.0A 22µF SUB15P01-52 x2 D2PAK I
7.5A 44µF SUB15P01-52 x3 D2PAK J
10.0A 44µF SUB15P01-52 x4 D2PAK K
3.3V
IN
to 1.8V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
0.6A 10µF Si4433DY SO-8 C
1.25A 22µF Si4433DY x2 SO-8 D
1.25A 10µF SUB15P01-52 D2PAK H
2.0A 44µF Si4433DY x3 SO-8 E
2.5A 44µF Si4433DY x4 SO-8 F
2.5A 22µF SUB15P01-52 x2 D2PAK I
3.75A 44µF SUB15P01-52 x3 D2PAK J
5.0A 44µF SUB15P01-52 x4 D2PAK K
3.3V
IN
to 1.5V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
0.5A 10µF Si4433DY SO-8 C
1.0A 22µF Si4433DY x2 SO-8 D
1.0A 10µF SUB15P01-52 D2PAK H
1.5A 44µF Si4433DY x3 SO-8 E
2.0A 44µF Si4433DY x4 SO-8 F
2.0A 22µF SUB15P01-52 x2 D2PAK I
3.0A 44µF SUB15P01-52 x3 D2PAK J
4.25A 44µF SUB15P01-52 x4 D2PAK K
3.3V
IN
to 1.25V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
0.4A 10µF Si4433DY SO-8 C
0.75A 22µF Si4433DY x2 SO-8 D
0.75A 10µF SUB15P01-52 D2PAK H
1.25A 44µF Si4433DY x3 SO-8 E
1.75A 44µF Si4433DY x4 SO-8 F
1.75A 22µF SUB15P01-52 x2 D2PAK I
2.75A 44µF SUB15P01-52 x3 D2PAK J
3.75A 44µF SUB15P01-52 x4 D2PAK K
2.5V
IN
to 1.8V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
1.25A 10µF Si4433DY SO-8 C
2.5A 22µF Si4433DY x2 SO-8 D
2.5A 10µF SUB15P01-52 D2PAK H
4.0A 44µF Si4433DY x3 SO-8 E
5.5A 44µF Si4433DY x4 SO-8 F
5.5A 22µF SUB15P01-52 x2 D2PAK I
8.0A 44µF SUB15P01-52 x3 D2PAK J
11.0A 44µF SUB15P01-52 x4 D2PAK K
2.5V
IN
to 1.5V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
1.0A 10µF Si4433DY SO-8 C
2.0A 22µF Si4433DY x2 SO-8 D
2.0A 10µF SUB15P01-52 D2PAK H
3.0A 44µF Si4433DY x3 SO-8 E
4.0A 44µF Si4433DY x4 SO-8 F
4.0A 22µF SUB15P01-52 x2 D2PAK I
6.0A 44µF SUB15P01-52 x3 D2PAK J
8.0A 44µF SUB15P01-52 x4 D2PAK K
2.5V
IN
to 1.25V
OUT
Conversion
I
OUT
C
OUT
MOSFET Package Schematic
0.75A 10µF Si4433DY SO-8 C
1.5A 22µF Si4433DY x2 SO-8 D
1.5A 10µF SUB15P01-52 D2PAK H
2.0A 44µF Si4433DY x3 SO-8 E
3.0A 44µF Si4433DY x4 SO-8 F
3.0A 22µF SUB15P01-52 x2 D2PAK I
4.5A 44µF SUB15P01-52 x3 D2PAK J
6.0A 44µF SUB15P01-52 x4 D2PAK K
