Rainbow-electronics MAX685 Manual do Utilizador descarregar pdf (Página 4)

1.240

1.242

1.244

1.248

1.246

1.250

1.252

1.254

-40 200-20 40 60 80 100

REFERENCE VOLTAGE

vs. TEMPERATURE

MAX685-13

TEMPERATURE (°C)

REFERENCE VOLTAGE (V)

= 5.0V

= 3.3V

MAX685

Dual-Output (Positive and Negative),

DC-DC Converter for CCD and LCD

4 _______________________________________________________________________________________

0 42 6 8 10

EFFICIENCY vs. LOAD CURRENT

(POSITIVE OUTPUT LOADED)

MAX685-01

LOAD CURRENT (mA)

EFFICIENCY (%)

= 5.0V

= 3.3V

0 42 3 51 6 7 98 10

EFFICIENCY vs. LOAD CURRENT

(NEGATIVE OUTPUT LOADED)

MAX685-02

LOAD CURRENT (mA)

EFFICIENCY (%)

= 5.0V

= 3.3V

0 42 6 8 10

EFFICIENCY vs. LOAD CURRENT

(BOTH OUTPUTS LOADED)

MAX685-03

LOAD CURRENT (mA)

EFFICIENCY (%)

= 5.0V

= 3.3V

0.5

1.0

1.5

2.0

2.5 3.53.0 4.0 4.5 5.0 5.5

NO-LOAD CURRENT vs.

INPUT VOLTAGE

MAX685-04

INPUT VOLTAGE (V)

NO-LOAD CURRENT (mA)

150

180

170

160

190

200

210

220

230

240

250

2.7 3.73.2 4.2 4.7 5.2 5.7

LX SWITCHING FREQUENCY

vs. INPUT VOLTAGE

MAX865-07

INPUT VOLTAGE (V)

OSCILLATOR FREQUENCY (kHz)

SYNC = V

1.248

1.249

1.250

0 15 205 10 25 30 35 40 45 50

REFERENCE LOAD REGULATION

MAX685-06

LOAD CURRENT (µA)

REFERENCE VOLTAGE (V)

Typical Operating Characteristics

(Circuit of Figure 3, V

OUT+

= 15V, V

OUT-

= -7.5V, T

= +25°C, unless otherwise noted.)

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

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Rainbow-electronics MAX685 Manual do Utilizador Página 4

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