Rainbow-electronics MAX8625A Instrukcja Użytkownika Pobierz pdf (Strona 7)

MAX8625A

High-Efficiency, Seamless Transition,

Step-Up/Down DC-DC Converter

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

= 3.6V, SKIP = GND, T

= +25°C, Figure 4, unless otherwise noted.)

2.28

2.34

2.32

2.30

2.36

2.38

2.40

2.42

2.44

2.46

2.48

-50 0-25 25 50 75 100

MINIMUM STARTUP VOLTAGE

vs. TEMPERATURE

MAX8625A toc22

TEMPERATURE (°C)

MINIMUM STARTUP VOLTAGE (V)

OUT

= 3.3V, NO LOAD

1.22

1.24

1.23

1.26

1.25

1.27

1.28

-40 20 40-20 0 60 80 100

REFERENCE vs. TEMPERATURE

NO LOAD

MAX8625A toc23

TEMPERATURE (°C)

REFERENCE (V)

OUT

= 3.3V

= 3.0V,

3.6V,

4.2V,

5.0V

1.22

1.24

1.23

1.26

1.25

1.27

1.28

-40 20 40-20 0 60 80 100

REFERENCE vs. TEMPERATURE

WITH 300mA LOAD

MAX8625A toc24

TEMPERATURE (°C)

REFERENCE (V)

OUT

= 3.3V

= 3.0V,

3.6V,

4.2V,

5.0V

100

μs/div

SHUTDOWN DUE TO OVERLOAD

= 3.6V, V

OUT

= 3.288V

MAX8625A toc25

LX2

2V/div

LX2

2V/div

OUT

500mV/div

500mA/div

2μs/div

BOOST-TO-BUCK TRANSITION

FPWM MODE V

= 3.6V, V

OUT

= 3.288V

MAX8625A toc26

1V/div

DC OFFSET = 3V

OUT

100mV/div

AC-COUPLED

200mA/div

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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