Typical operating characteristics – Rainbow Electronics MAX1853 User Manual

Page 3

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background image

MAX1852/MAX1853

SC70 Inverting Charge Pumps

with Shutdown

_______________________________________________________________________________________

3

12

14

16

18

20

22

24

26

28

-40

-15

10

35

60

85

MAX1853

OUTPUT RESISTANCE vs. TEMPERATURE

MAX1852/3 toc09

TEMPERATURE (

°C)

OUTPUT RESISTANCE (

)

V

IN

= +3.3V

V

IN

= +5V

V

IN

= +2.5V

12

14

16

18

20

22

24

26

28

-40

-15

10

35

60

85

MAX1852

OUTPUT RESISTANCE vs. TEMPERATURE

MAX1852/3 toc08

TEMPERATURE (

°C)

OUTPUT RESISTANCE (

)

V

IN

= +2.5V

V

IN

= +5V

V

IN

= +3.3V

0

1

2

3

4

5

6

7

8

-40

-15

10

35

60

85

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX1852/3 toc07

TEMPERATURE (

°C)

SUPPLY CURRENT (nA)

-5.5

-4.5

-5.0

-3.5

-4.0

-2.5

-3.0

-2.0

0

10

15

5

20

25

30

MAX1852

OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX1852/3 toc01

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

V

IN

= +3.3V

V

IN

= +5V

0

30

20

10

40

50

60

70

80

90

100

0

10

5

15

20

25

30

MAX1853

EFFICIENCY vs. LOAD CURRENT

MAX1852/3 toc04

LOAD CURRENT (mA)

EFFICIENCY (%)

V

IN

= +3.3V

V

IN

= +2.5V

V

IN

= +5V

-5.5

-4.5

-5.0

-3.5

-4.0

-2.5

-3.0

-2.0

0

10

15

5

20

25

30

MAX1853

OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX1852/3 toc02

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

V

IN

= +3.3V

V

IN

= +5V

0

30

20

10

40

50

60

70

80

90

100

0

10

5

15

20

25

30

MAX1852

EFFICIENCY vs. LOAD CURRENT

MAX1852/3 toc03

LOAD CURRENT (mA)

EFFICIENCY (%)

V

IN

= +5V

V

IN

= +2.5V

V

IN

= +3.3V

13

16

15

14

17

18

19

20

21

22

23

2.5

3.5

3.0

4.0

4.5

5.0

5.5

OUTPUT RESISTANCE vs. INPUT VOLTAGE

MAX1852/3 toc05

INPUT VOLTAGE (V)

OUTPUT RESISTANCE (

)

MAX1852

MAX1853

0

40

20

100

80

60

120

140

180

160

200

0

1

2

3

4

5

NO-LOAD SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX1852/3 toc06

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (

µ

A)

MAX1853

MAX1852

Typical Operating Characteristics

(Circuit of Figure 1, capacitors from Table 2, V

IN

= +5V, SHDN = IN, T

A

= +25°C, unless otherwise noted.)

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