Rainbow-electronics MAX1947 Manual do Utilizador descarregar pdf (Página 5)

MAX1947

Low Input/Output Voltage

Step-Up DC-DC Converter with

RESET

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

= 1.5V, Circuit of Typical Application Circuit, T

= +25°C, unless otherwise noted.)

1.74

1.76

1.80

1.78

1.82

1.84

0 10050 150 200 250 300 350

OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX1947toc10

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

HEAVY-LOAD SWITCHING WAVEFORMS

MAX1947toc13

OUT

(AC-COUPLED)

50mV/div

2V/div

500mA/div

2µs/div

LINE-TRANSIENT WAVEFORMS

MAX1947toc15

OUT

(AC-COUPLED)

1.5V

50mV/div

10µs/div

1.74

1.76

1.80

1.78

1.82

1.84

0.7 0.90.8 1.0 1.1 1.3 1.51.2 1.4 1.6 1.7

NO-LOAD OUTPUT VOLTAGE

vs. INPUT VOLTAGE

MAX1947toc11

INPUT VOLTAGE (V)

OUTPUT VOLTAGE (V)

LIGHT-LOAD SWITCHING WAVEFORMS

MAX1947toc14

OUT

(AC-COUPLED)

50mV/div

2V/div

500mA/div

2µs/div

LOAD-TRANSIENT WAVEFORMS

MAX1947toc16

LOAD

OUT

(AC-COUPLED)

200mA/div

50mV/div

10µs/div

1.74

1.76

1.80

1.78

1.82

1.84

-40 10-15 35 60 85

OUTPUT VOLTAGE

vs. TEMPERATURE

MAX1947toc12

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

LOAD

= 40mA

1 2 3 4 5 6 7 8 9 10

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