30118281

FIGURE 3.

TABLE 5. Bill of Materials, V

and Fast Transient Response

Designator

Description

Case Size

Manufacturer

Manufacturer P/N

Quantity

U1

SIMPLE SWITCHER®

TO-PMOD-7

National

Semiconductor

LMZ10503EXTTZ-ADJ

1

C

in1

22 µF, X5R, 10V

1210

AVX

1210ZD226MAT

2

C

in2

220 µF, 10V, AL-Elec

E

Panasonic

EEE1AA221AP

1*

C

O1

4.7 µF, X5R, 10V

0805

AVX

0805ZD475MAT

1*

C

O2

22 µF, X5R, 6.3V

1206

AVX

12066D226MAT

1*

C

O3

100 µF, X5R, 6.3V

1812

AVX

18126D107MAT

1

R

fbt

75 k

Ω

0402

Vishay Dale

CRCW040275K0FKED

1

R

fbb

34.8 k

Ω

0402

Vishay Dale

CRCW040234K8FKED

1

R

comp

1.0 k

Ω

0402

Vishay Dale

CRCW04021K00FKED

1

C

comp

220 pF, ±5%, C0G, 50V

0402

Murata

GRM1555C1H221JA01D

1

C

SS

10 nF, ±10%, X7R, 16V

0402

Murata

GRM155R71C103KA01

1

* Optional components, include for low input and output voltage ripple.

TABLE 6. Output Voltage Setting (R

V

OUT

R

fbb

3.3V

23.7 k

Ω

2.5 V

34.8 k

Ω

1.8 V

59 k

Ω

1.5 V

84.5 k

Ω

1.2 V

150 k

Ω

0.9 V

590 k

Ω

15

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