Rainbow-electronics MAX773 Manual de usuario descargar pdf (Pagina 5)

MAX770–MAX773

5V/12V/15V or Adjustable, High-Efficiency,

Low I

, Step-Up DC-DC Controllers

_______________________________________________________________________________________

250

-60 -20 60 140

REFERENCE OUTPUT RESISTANCE vs.

TEMPERATURE

MAX770–3-10

TEMPERATURE (°C)

REFERENCE OUTPUT RESISTANCE (Ω)

20 100

150

-40 0 8040 120

100

200

100µA

50µA

10µA

1.502

-60 -20 60 140

REFERENCE vs. TEMPERATURE

MAX770–3-11

TEMPERATURE (°C)

REFERENCE (V)

20 100-40 0 8040 120

1.500

1.498

1.496

1.494

1.492

1.504

1.506

4.0

-60 -20 60 140

SHUTDOWN CURRENT vs. TEMPERATURE

MAX770–3-12

TEMPERATURE (°C)

(µA)

20 100-40 0 8040 120

3.5

3.0

2.5

2.0

1.5

1.0

0.5

V+ = 15V

V+ = 4V

V+ = 8V

15.5

16.0

16.5

-60

-30 0 30 60

120 150

MAXIMUM SWITCH ON-TIME vs.

TEMPERATURE

TEMPERATURE (°C)

ON(MAX) (µs)

MAX770–3-13

2.20

2.25

2.30

-60

-30 0 30 60

120 150

MINIMUM SWITCH OFF-TIME vs.

TEMPERATURE

TEMPERATURE (°C)

OFF(MIN) (µs)

MAX770–3-14

6.0

7.0

8.0

-60

-30 0 30 60

120 150

MAXIMUM SWITCH ON-TIME/

MINIMUM SWITCH OFF-TIME RATIO

vs. TEMPERATURE

TEMPERATURE (°C)

ON(MAX)/

OFF(MIN) RATIO

MAX770–3-15

7.5

6.5

____________________________Typical Operating Characteristics (continued)

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 ... 19 20

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Rainbow-electronics MAX773 Manual de usuario Pagina 5

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