Rainbow-electronics MAX1748 Manual de usuario descargar pdf (Pagina 14)

MAX1748

Triple-Output TFT LCD DC-DC Converter

14 ______________________________________________________________________________________

INTG

470pF

REF

0.22µF

49.9k

0.22µF

6.8µH

0.1µF

1.0µF

0.47µF

MAIN

= +18V, 140mA

NEG

= -8V, 20mA

319k

49.9k

= 5.0V

SUPN

SHDN

RDY

POS

+25V, 5mA

10k

130k

COMP

68nF

OUT

10µF

IN SUPP

DRVP

FBP

INTG

TGND

GND

FBN

REF

PGND

MAX1748

0.22µF

0.1µF

0.47µF

3.3µF

100k

DRVN

1.0µF

Figure 4. Power Supply Using Cascoded MOSFET

1 2 ... 9 10 11 12 13 14 15 16

General Description 1
Features 1
Pin Configuration 1
Ordering Information 1
ABSOLUTE MAXIMUM RATINGS 2
ELECTRICAL CHARACTERISTICS 2
(Circuit of Figure 5, V 6
= 3.3V, T 6
Pin Description 7
Detailed Description 8
Pin Description (continued) 8
Shutdown 9
Power-Up Sequencing 9
Design Procedure 11
Table 1. Component Suppliers 12
Applications Information 13
Chip Information 13
Typical Operating Circuit 15
Package Information 16

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Rainbow-electronics MAX1748 Manual de usuario Pagina 14

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