Rainbow-electronics MAX669 Bedienungsanleitung PDF herunterladen (Seite 17)

Chip Information

TRANSISTOR COUNT: 1861

MAX668/MAX669

1.8V to 28V Input, PWM Step-Up

Controllers in µMAX

______________________________________________________________________________________ 17

MAX668

LDO

CS+

SHDN

PGND

FREQREF

GND

2:1

EXT

= +5V

T1: COILTRONICS CTX03-14232

+5V @ 400mA

+5V RETURN

0.1Ω

301k

510Ω

TLV431

610Ω0.068µF

100k

MBR0540L

47µH

220µF

10V

0.22µF

1µF

100k

10k

MOC211

IRF7603

220µF

10V

0.1µF

Figure 7. Isolated +5V to +5V at 400mA Power Supply

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Rainbow-electronics MAX669 Bedienungsanleitung Seite 17