Rainbow-electronics MAX1724 Manual de usuario descargar pdf (Pagina 4)

MAX1722/MAX1723/MAX1724

1.5µA I

, Step-Up DC-DC Converters

in Thin SOT23-5

4 _______________________________________________________________________________________

Typical Operating Characteristics

(Figure 3 (MAX1723), Figure 7 (MAX1722), Figure 8 (MAX1724), V

BATT

= V

= 1.5V, L = 10µH, C

= 10µF, C

OUT

= 10µF, T

= +25°C,

unless otherwise noted.)

120

160

200

021345

MAXIMUM OUTPUT CURRENT

vs. INPUT VOLTAGE

MAX1722 toc04

INPUT VOLTAGE (V)

OUT(MAX)

(mA)

OUT

= 2.5V

OUT

= 5.0V

OUT

= 3.3V

10 100

0.8

1.0

1.2

1.4

1.6

2.0

1.8

2.2

2.4

0.01 0.1 1

STARTUP VOLTAGE

vs. LOAD CURRENT

MAX1722 toc05

LOAD CURRENT (mA)

STARTUP VOLTAGE (V)

0.6

RESISTIVE LOAD

OUT

= 5.0V

0.4

0.2

0.8

0.6

1.2

1.0

1.4

1.8

1.6

2.0

1.0 2.0 2.5 3.01.5 3.5 4.0 4.5 5.0 5.5

MAX1722 toc06

QUIESCENT CURRENT (µA)

OUTPUT VOLTAGE (V)

QUIESCENT CURRENT INTO OUT

vs. OUTPUT VOLTAGE

NO LOAD

100

0.01 0.1 1 10 100 1000

EFFICIENCY vs. LOAD CURRENT

OUT

= 5.0V)

MAX1722 toc01

LOAD CURRENT (mA)

EFFICIENCY (%)

= 2.0V

= 3.3V V

= 4.0V

= 1.5V

= 1.0V

L = DO1606

100

0.01 0.1 1 10 100 1000

EFFICIENCY vs. LOAD CURRENT

OUT

= 3.3V)

MAX1722 toc02

LOAD CURRENT (mA)

EFFICIENCY (%)

= 2.0V

= 2.5V

= 1.5V

= 1.0V

L = DO1606

100

0.01 0.1 1 10 100 1000

EFFICIENCY vs. LOAD CURRENT

OUT

= 2.5V)

MAX1722 toc03

LOAD CURRENT (mA)

EFFICIENCY (%)

= 1.5V

= 2.0V

= 1.0V

L = DO1606

0.4

0.2

0.8

0.6

1.0

1.2

-40 85

STARTUP VOLTAGE vs.

TEMPERATURE

MAX1722 toc07

TEMPERATURE (°C)

STARTUP VOLTAGE (V)

10-15 35 60

NO LOAD

1µs/div

500mA/div

OUT

50mV/div

2V/div

SWITCHING WAVEFORMS

MAX1722 toc08

OUT

= 50mA, V

OUT

= 5.0V, V

= 3.3V

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

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Rainbow-electronics MAX1724 Manual de usuario Pagina 4

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