Rainbow-electronics MAX17031 Bedienungsanleitung PDF herunterladen (Seite 12)

MAX17031

Dual Quick-PWM Step-Down Controller with Low-

Power LDO and RTC Regulator for MAIN Supplies

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MAX17031

DH1

DL1

LDO5

SKIP

BST1

OUT1

LX1

PGOOD

RTC

REF

GND

0.1µF

10nF

1MΩ

100kΩ

0.1µF

BST1

0.1µF

4.7µF

OUT1

IN_PIN

0.1µF

5V OUTPUT

5V LDO OUTPUT

POWER GROUND

ANALOG GROUND

12V TO 15V

CHARGE PUMP

ILIM1

10nF

ON1

ON2

ONLDO

ILIM2

PAD

DH2

DL2 D2

BST2

OUT2

LX2

BST2

0.1µF

OUT2

3.3V OUTPUT

INPUT (V

7V TO 24V

COMBINED POWER-GOOD

RTC SUPPLY

200kΩ

47Ω

1.0µF

ILIM1

ILIM2

1µF

4x 10µF

25V

ON OFF

*NOTE: LOWER INPUT VOLTAGES REQUIRE ADDITIONAL INPUT CAPACITANCE. IF OPERATING NEAR DROPOUT, COMPONENT SELECTION MUST BE

CAREFULLY DONE TO ENSURE PROPER OPERATION.

Figure 1. Standard Application Circuit—Main Supply

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 23 24

MAX17031 1

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