Advanced Monolithic Systems, Inc.

6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

AMS34063

TYPICAL APPLICATIONS

Step-Down Converter

Test

Conditions

Results

Line Regulation

15mV

Load Regulation

5.0mV

Output Ripple

Short Circuit Current

Ω

2.3A

Efficiency

84.7%

a. External NPN Switch

b. External PNP Saturated Switch

1.25V

REF

REG

8

7

6

5

+

-

+

C

O

V

OUT

5.0V/500mA

470

µF

470

pF

C

T

100

µF

+

4

1

2

3

COMP.

I

PK

C

T

OSC

R

S

Q

Q

2

Q

1

1N5822

L

220

µH

R

2

R

1

1.2 k

3.6 k

R

SC

0.33

V

IN

25V

8

7

6

V

OUT

1

2

R

SC

V

IN

8

7

6

1

2

R

SC

V

IN

V

OUT