Rainbow-electronics MAX742 Manual do Utilizador descarregar pdf (Página 9)

MAX742

Switch-Mode Regulator with

+5V to ±12V or ±15V Dual Output

_______________________________________________________________________________________ 9

MAX742

CSH+

VIN

4.5V to 6V*

CSL+

C2

6.8nF

+VO

D1

1N5820

L1

25µH

R2

0.02Ω

C8

1000µF

D4

1N914

D3

1N914

C9

1000µF

GND

EXT+

PUMP

PDRV

EXT-

V+

CSH-

CSL-

C7

1µF

C14

0.1µF

DISC CERAMIC

C1

0.1µF

NOTES:

Q1 = Motorola MTP25N06L

Q2 = International Rectifier IRF9Z30

L1, L2 = Gowanda 121AT2502VC

R2, R3 = KRL LB4-1 ±3%

C8–C13 = Nichicon PL Series (25V or 35V)

R3

0.02Ω

C10

1000µF

10V

C3

10µF

R1

100Ω

C4

2.2µF

C5

6.8nF

L2

25µH

-VO

D2

1N5820

C11

1000µF

C12

1000µF

1µF

FB+

CC+

AGND

AV+

100/200

12/15

VREF

* FOR HIGHER INPUT VOLTAGE, SEE

SUPPLY-VOLTAGE RANGE

SECTION.

CC-

FB-

C13

330µF

Figure 3. High-Power 22W Application Circuit

1 2 3 4 5 6 7 8 9 10 11 12

Switch-Mode Regulator with 1

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