Rainbow-electronics MAX1585 Manual do Utilizador descarregar pdf (Página 8)

MAX1584/MAX1585

5-Channel Slim DSC Power Supplies

8 _______________________________________________________________________________________

NO-LOAD INPUT CURRENT

vs. INPUT VOLTAGE (SWITCHING)

MAX1584/85 toc07

INPUT VOLTAGE (V)

INPUT CURRENT (mA)

4.54.03.0 3.51.0 1.5 2.0 2.50.5

05.0

BOOST-BUCK (SU + AUX3)

= 5.0V, OUT3 = 3.33V

= 5.0V

MINIMUM STARTUP VOLTAGE

vs. LOAD CURRENT (V

)

MAX5184/85 toc08

LOAD CURRENT (mA)

MINIMUM STARTUP VOLTAGE (V)

800600400200

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0 1000

SCHOTTKY DIODE CONNECTED

FROM IN TO V

REFERENCE VOLTAGE

vs. TEMPERATURE

MAX1584/85 toc09

TEMPERATURE (

REFERENCE VOLTAGE (V)

7550250-25

1.246

1.248

1.251

1.254

1.243

-50 100

REFERENCE VOLTAGE

vs. REFERENCE LOAD CURRENT

MAX1584/85 toc10

REFERENCE LOAD CURRENT (

REFERENCE VOLTAGE (V)

25020015010050

1.245

1.246

1.247

1.248

1.249

1.250

1.244

0300

OSCILLATOR FREQUENCY vs. R

OSC

MAX1584/85 toc11

OSC

(kΩ)

OSCILLATOR FREQUENCY (kHz)

10010

100

300

500

700

900

1100

-100

11000

OSC

= 470pF

OSC

= 330pF

OSC

= 220pF

OSC

= 100pF

OSC

= 47pF

SWITCHING FREQUENCY

vs. TEMPERATURE

MAX1584/85 toc12

TEMPERATURE (°C)

SWITCHING FREQUENCY (kHz)

7550250-25

502

503

504

505

506

507

508

509

510

501

-50 100

OSC

= 51kΩ

OSC

= 100pF

Typical Operating Characteristics (continued)

(Circuit of Figure 1, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 28 29

MAX1584/MAX1585 1
Package Information 29

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