Rainbow-electronics MAX1621 Bedienungsanleitung PDF herunterladen (Seite 6)

MAX1620/MAX1621

Digitally Adjustable LCD Bias Supplies

6 _______________________________________________________________________________________

_____________________________Typical Operating Characteristics (continued)

5V, V

BATT

= 10V, L1 = 100µH, T

= +25°C, unless otherwise noted.)

0.70

0.75

0.80

0.85

0.90

0.95

1.00

-26 -24 -22 -20 -18 -16 -14 -12

EFFICIENCY vs. OUTPUT VOLTAGE

MAX1620/21-04

OUTPUT VOLTAGE (V)

EFFICIENCY (%)

-10mA

-20mA

0.70

0.75

0.80

0.85

0.90

0.95

1.00

2 4 6 8 10 12 14 16 18 20

EFFICIENCY vs. V

BATT

MAX1620/21-05

BATT

(V)

EFFICIENCY (%)

+20V, +10mA

-20V, -10mA

100

120

140

160

180

200

012345

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX1620/21-06

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

100

125

150

175

200

-40 -20 0 20 40 60 80

SUPPLY CURRENT vs. TEMPERATURE

MAX1620/21-07

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

1.49

1.50

1.51

-40 -20 0 20 40 60 80

REFERENCE VOLTAGE

vs. TEMPERATURE

MAX1620/21-10

TEMPERATURE (°C)

REFERENCE VOLTAGE (V)

012345

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX1620/21-08

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

-40 -20 0 20 40 60 80

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX1620/21-09

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

18.0

18.5

19.0

19.5

20.0

20.5

21.0

21.5

22.0

2.5 3.0 3.5 4.0 4.5 5.0

k-FACTOR vs. SUPPLY VOLTAGE

MAX1620/21-11

SUPPLY VOLTAGE (V)

k-FACTOR (µs-V)

18.0

18.5

19.0

19.5

20.0

20.5

21.0

21.5

22.0

-60 -40 -20 0 20 40 60 80 100

k-FACTOR vs. TEMPERATURE

MAX1620/21-12

TEMPERATURE (°C)

k-FACTOR (µs-V)

1 2 3 4 5 6 7 8 9 10 11 ... 19 20

MAX1620/MAX1621 1

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