LMZ10505_1006 Datasheet, PDF (15/22 Pages) National Semiconductor (TI) – 5A SIMPLE SWITCHER® Power Module with 5.5V Maximum Input Voltage

LMZ10505 Application Circuit Schematic and BOMs
This section provides several application solutions with an
associated bill of materials. The compensation for each solu-
tion was optimized to work over the full input range. Many
applications have a fixed input voltage rail. It is possible to
modify the compensation to obtain a faster transient response
for a given input voltage operating point.
FIGURE 2.
30107454
TABLE 3. Bill of Materials, V_IN = 3.3V to 5V, V_OUT = 2.5V, I_{OUT (MAX)} = 5A, Optimized for Electrolytic Input and Output
Capacitance
Designator
U1
C_in1
C_O1
R_fbt
R_fbb
R_comp
C_comp
C_SS
Description
SIMPLE SWITCHER ®
Case Size
TO-PMOD-7
150 µF, 6.3V, 18 mΩ C2, 6.0 x 3.2 x 1.8 mm
330 µF, 6.3V, 18 mΩ D3L, 7.3 x 4.3 x 2.8 mm
100 kΩ
0603
47.5 kΩ
0603
15 kΩ
0603
330 pF, ±5%, C0G, 50V
0603
10 nF, ±10%, X7R, 16V
0603
Manufacturer
National
Semiconductor
Sanyo
Sanyo
Vishay Dale
Vishay Dale
Vishay Dale
TDK
Murata
Manufacturer P/N
LMZ10505TZ-ADJ
Quantity
1
6TPE150MIC2
1
6TPE330MIL
1
CRCW0603100KFKEA
1
CRCW060347K5FKEA
1
CRCW060315K0FKEA
1
C1608C0G1H331J
1
GRM188R71C103KA01
1
TABLE 4. Bill of Materials, V_IN = 3.3V, V_OUT = 0.8V, I_{OUT (MAX)} = 5A, Optimized for Solution Size and Transient Response
Designator
U1
Description
SIMPLE SWITCHER ®
C_in1, C_O1
R_fbt
R_comp
C_comp
C_SS
47 µF, X5R, 6.3V
110 kΩ
1.0 kΩ
27 pF, ±5%, C0G, 50V
10 nF, ±10%, X7R, 16V
Case Size
TO-PMOD-7
1206
0402
0402
0402
0402
Manufacturer
National
Semiconductor
TDK
Vishay Dale
Vishay Dale
Murata
Murata
Manufacturer P/N
LMZ10505TZ-ADJ
Quantity
1
C3216X5R0J476M
2
CRCW0402100KFKED
1
CRCW04021K00FKED
1
GRM1555C1H270JZ01
1
GRM155R71C103KA01
1
In the case where the output voltage is 0.8V, it is recommended to remove R_fbb and keep R_fbt, R_comp, and C_comp for a type III compensation.
15
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