Rainbow-electronics MAX684 Instrukcja Użytkownika Pobierz pdf (Strona 4)

MAX682/MAX683/MAX684

3.3V-Input to Regulated 5V-Output

Charge Pumps

4 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuit of Figure 5, V

= 3.3V, component values from Tables 2 and 3, T

= +25°C, unless otherwise noted.)

100

1 10 100 1000

MAX682 EFFICIENCY

vs. LOAD CURRENT (SKIP = HIGH)

MAX682 TOC13

LOAD CURRENT (mA)

EFFICIENCY (%)

= 5.0V

= 3.3V

= 3.0V

SHDN

= 22µA

100

1 10 100 1000

MAX683 EFFICIENCY

vs. LOAD CURRENT (SKIP = HIGH)

MAX682 TOC14

LOAD CURRENT (mA)

EFFICIENCY (%)

= 5.0V

= 3.3V

= 3.0V

SHDN

= 22µA

1 10 100

MAX684 EFFICIENCY

vs. LOAD CURRENT (SKIP = HIGH)

MAX682 TOC15

LOAD CURRENT (mA)

EFFICIENCY (%)

= 3.0V

= 3.3V

= 5.0V

SHDN

= 22µA

200ns/div

OUTPUT WAVEFORM

(SKIP = HIGH)

MAX682 TOC16

50mV/div

SKIP = HIGH, I

SHDN

= 22µA, I

LOAD

= 250mA, MAX682

200ns/div

OUTPUT WAVEFORM

(SKIP = LOW)

MAX682 TOC17

50mV/div

SKIP = LOW, I

LOAD

= 250mA, MAX682

100

0.1 1 10 100 1000

MAX682 EFFICIENCY

vs. LOAD CURRENT (SKIP = LOW)

MAX682 TOC10

LOAD CURRENT (mA)

EFFICIENCY (%)

= 3.6V

= 3.3V

= 3.0V

100

0.1 1 10 100 1000

MAX683 EFFICIENCY

vs. LOAD CURRENT (SKIP = LOW)

MAX682 TOC11

LOAD CURRENT (mA)

EFFICIENCY (%)

= 3.6V

= 3.3V

= 3.0V

100

0.1 1 10 100

MAX684 EFFICIENCY

vs. LOAD CURRENT (SKIP = LOW)

MAX682 TOC12

LOAD CURRENT (mA)

EFFICIENCY (%)

= 3.6V

= 3.3V

= 3.0V

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

MAX682/MAX683/MAX684 1
Charge Pumps 1

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