VIN

EN

GND

FB

SS

Ccomp

U1

VOUT

LMZ10503EXT

+

1

2

3

4, EP

5

6, 7

LMZ10503EXT

www.ti.com

SNVS668H – JUNE 2010 – REVISED SEPTEMBER 2015

8.3.2 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output

The compensation for each solution 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 27. Schematic for 2.5-V Output Based on 3.3-V to 5-V Input

DESIGNATOR

DESCRIPTION

CASE SIZE

MANUFACTURER

MANUFACTURER P/N

QUANTITY

U1

SIMPLE SWITCHER

PFM-7

Texas Instruments

LMZ10503EXTTZ

1

1 µF, X7R, 16 V

0805

TDK

C2012X7R1C105K

1

4.7 µF, X5R, 6.3 V

0805

TDK

C2012X5R0J475K

2

22 µF, X5R, 16 V

1210

TDK

C3225X5R1C226M

2

47 µF, X5R, 6.3 V

1210

TDK

C3225X5R0J476M

1

220 µF, 10 V, AL-Elec

E

Panasonic

EEE1AA221AP

1

100 µF, X5R, 6.3 V

1812

TDK

C4532X5R0J107M

1

75 k

Ω

0805

Vishay Dale

CRCW080575K0FKEA

1

34.8 k

Ω

0805

Vishay Dale

CRCW080534K8FKEA

1

1.1 k

Ω

0805

Vishay Dale

CRCW08051K10FKEA

1

180 pF, ±5%, C0G, 50 V

0603

TDK

C1608C0G1H181J

1

100 k

Ω

0805

Vishay Dale

CRCW0805100KFKEA

1

10 nF, ±5%, C0G, 50 V

0805

TDK

C2012C0G1H103J

1

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

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