MAX757EPA datasheet(3/8 Pages) MAXIM

Part #	MAX757EPA

Description	3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters

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Manufacturer	MAXIM [Maxim Integrated Products]

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3.3V/5V/Adjustable-Output,

Step-Up DC-DC Converters

_________________________________________________________________________________________________

3

MINIMUM START-UP INPUT VOLTAGE

vs. LOAD CURRENT

LOAD CURRENT (mA)

10

100

1000

1

1.8

1.6

1.4

1.2

1.0

0.8

3.3V MODE

40

0.1

10

1000

EFFICIENCY vs. LOAD CURRENT

3.3V OUTPUT MODE

LOAD CURRENT (mA)

60

80

90

50

70

1

100

VIN = 2.0V

VIN = 1.2V

40

0.1

10

1000

EFFICIENCY vs. LOAD CURRENT

5V OUTPUT MODE

LOAD CURRENT (mA)

60

80

90

50

70

1

100

VIN = 3.3V

VIN = 2.5V

VIN = 1.25V

800

0

02

MAXIMUM OUTPUT CURRENT

vs. INPUT VOLTAGE

200

600

INPUT VOLTAGE (V)

4

400

100

300

500

700

13

5

3.3V MODE

5V MODE

1M

10

µ

10m

1

SWITCHING FREQUENCY

vs. LOAD CURRENT

100

LOAD CURRENT (A)

1k

10k

100k

100

µ

1m

100m

5V MODE

3.3V MODE

VIN = 2.5V

0

2

QUIESCENT CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

4

100

200

300

400

500

1

3

5

VOUT = 3.3V

VOUT = 5V

CURRENT MEASURED AT VIN

50

0

12

5

SHUTDOWN QUIESCENT CURRENT

vs. INPUT VOLTAGE

20

INPUT VOLTAGE (V)

4

40

10

30

3

CURRENT MEASURED AT VIN

10

0

REFERENCE VOLTAGE

LOAD REGULATION

2

8

LOAD CURRENT (

µA)

6

4

50

100

150

200

250

VOUT = 3.3V

__________________________________________Typical Operating Characteristics

(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)

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