Rainbow-electronics MAX1677 Bedienungsanleitung PDF herunterladen (Seite 7)

MAX1677

Compact, High-Efficiency, Dual-Output

Step-Up and LCD Bias DC-DC Converter

_______________________________________________________________________________________ 7

1V/

div

OUT

50mV/

div

5ms/div

MAIN BOOST CONVERTER

LINE TRANSIENT

MAX1677-16

= 2V TO 3V, V

OUT

= 3.3V,

LOAD

= 150mA

1V/

div

LCD

50mV/

div

5ms/div

LCD LINE TRANSIENT

LCD

= +12V)

MAX1677-17

= 2V TO 3V, V

LCD

= +12V,

OUT

= 5mA

1V/

div

OUT

1V/

div

500µs/div

MAIN BOOST CONVERTER

STARTUP DELAY

MAX1677-19

= 2.4V, V

OUT

= 3.3V,

LOAD

= 10mA

Typical Operating Characteristics (continued)

(Circuits of Figures 2 and 3, T

= +25°C, unless otherwise noted.)

2V/

div

LCD

LCDON

10V/

div

10ms/div

LCD STARTUP DELAY

MAX1677-20

= 2.4V, V

LCD

= -20V,

OUT

= 5mA

1V/

div

LCD

50mV/

div

5ms/div

LCD LINE TRANSIENT

LCD

= -20V)

MAX1677-18

= 2V TO 3V, V

LCD

= -20V,

OUT

= 5mA

1 2 3 4 5 6 7 8 9 10 11 12 ... 15 16

EVALUATION KIT 1
AVAILABLE 1
ELECTRICAL CHARACTERISTICS 2
ABSOLUTE MAXIMUM RATINGS 2
MAX1677-16 7
MAX1677-17 7
MAX1677-19 7
MAX1677-20 7
MAX1677-18 7
Output Current 9
LCD Boost Converter (LCD) 11
Design Procedure 12
Applications Information 13
Table 4. Component Suppliers 14
Chip Information 15
Package Information 16

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