Rainbow-electronics MAX1625 Manual de usuario descargar pdf (Pagina 7)

MAX1624/MAX1625

High-Speed Step-Down Controllers with

Synchronous Rectification for CPU Power

_______________________________________________________________________________________ 7

____________________________Typical Operating Characteristics (continued)

= +25°C, using the MAX1624 evaluation kit, unless otherwise noted.)

1.1020

1.1000

0.1 10.01 10

MAX1624

OUTPUT VOLTAGE vs. OUTPUT CURRENT

OUT

= 1.1V)

1.1002

1.1006

1.1004

MAX1624/25 TOC07

OUTPUT CURRENT (A)

OUTPUT VOLTAGE (V)

1.1008

1.1010

1.1014

1.1012

1.1016

1.1018

LG = V

LG = REF

LG = AGND

R9 AND R10 = 4.7Ω

2.500

2.490

0.1 10.01 10

MAX1624

OUTPUT VOLTAGE vs. OUTPUT CURRENT

OUT

= 2.5V)

2.491

2.492

MAX1624/25 TOC08

OUTPUT CURRENT (A)

OUTPUT VOLTAGE (V)

2.493

2.494

2.496

2.495

2.497

2.498

2.499

LG = V

LG = REF

LG = AGND

R9 AND R10 = 4.7Ω

3.500

3.480

0.1 10.01 10

MAX1624

OUTPUT VOLTAGE vs. OUTPUT CURRENT

OUT

= 3.5V)

3.482

3.486

3.484

MAX1624/25 TOC09

OUTPUT CURRENT (A)

OUTPUT VOLTAGE (V)

3.488

3.494

3.490

3.492

3.496

3.498

LG = V

LG = REF

LG = AGND

R9 AND R10 = 4.7Ω

5.094

1.094

0.001 0.1 10.01 10

REFERENCE VOLTAGE

vs. OUTPUT CURRENT

1.594

2.094

MAX1624/25 TOC12

OUTPUT CURRENT (mA)

REFERENCE VOLTAGE (V)

2.594

3.594

3.094

4.094

4.594

SOURCING

CURRENT

SINKING

CURRENT

MAXIMUM DUTY CYCLE

vs. SWITCHING FREQUENCY

MAX1624/25 tTOC13

SWITCHING FREQUENCY (kHz)

MAXIMUM DUTY CYCLE (%)

200 800 1000 1200

100

600400

-10

1.7 2.3 2.91.1 3.5

MAX1624

OUTPUT ERROR vs.

DAC OUTPUT VOLTAGE SETTING

-8

-4

-6

MAX1624/25 TOC19

DAC OUTPUT VOLTAGE SETTING (V)

OUTPUT ERROR (mV)

-2

1 2 3 4 5 6 7 8 9 10 11 12 ... 23 24

MAX1624/MAX1625 1

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Rainbow-electronics MAX1625 Manual de usuario Pagina 7

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