MAX1620-MAX1621 datasheet(6/20 Pages) MAXIM

Part #	MAX1620-MAX1621

Description	Digitally Adjustable LCD Bias Supplies

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Manufacturer	MAXIM [Maxim Integrated Products]

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Digitally Adjustable LCD Bias Supplies

6

_______________________________________________________________________________________

_____________________________Typical Operating Characteristics (continued)

(VDD = 5V, VBATT = 10V, L1 = 100µH, TA = +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

OUTPUT VOLTAGE (V)

-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. VBATT

VBATT (V)

+20V, +10mA

-20V, -10mA

0

20

40

60

80

100

120

140

160

180

200

0

1

234

5

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

100

125

150

175

200

-40

-20

0

20

40

60

80

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

1.49

1.50

1.51

-40

-20

0

20

40

60

80

REFERENCE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (°C)

0

2

4

6

8

10

12

14

16

18

20

0

1

234

5

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

6

8

10

12

14

16

18

20

-40

-20

0

20

40

60

80

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

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

SUPPLY VOLTAGE (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

TEMPERATURE (°C)

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MAX1620-MAX1621 Datasheet(PDF) 6 Page - Maxim Integrated Products

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