LM2576

http://onsemi.com

22

THE LM2576−5 STEP−DOWN VOLTAGE REGULATOR WITH 5.0 V @ 3.0 A OUTPUT POWER CAPABILITY.

TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT

Figure 35. Schematic Diagram of the LM2576−5 Step−Down Converter

D1

1N5822

L1

150

mH

Output

2

4

Feedback

Unregulated

DC Input

1000

mF

/16 V

C1

100

mF

/50 V

LM2576−5

1

5

3ON/OFF

GN

D

ON/OFF

Regulated Output

C1

−

100

mF, 50 V, Aluminium Electrolytic

C2

−

1000

mF, 16 V, Aluminium Electrolytic

D1

−

3.0 A, 40 V, Schottky Rectifier, 1N5822

L1

−

150

mH, RL2444, Renco Electronics

Figure 36. Printed Circuit Board Layout

Component Side

Figure 37. Printed Circuit Board Layout

Copper Side

LM2576

U1

D1

C1

C2

L1

+

+

t

n

ON/OFF

NOTE: Not to scale.

NOTE: Not to scale.