Rainbow-electronics MAX799 Uživatelský manuál stáhnout pdf (Strana 6)

__________________________________________Typical Operating Characteristics

= +25°C, unless otherwise noted.)

100

0.001 10.10.01 10

EFFICIENCY vs.

LOAD CURRENT, 5V/3A CIRCUIT

MAX796-01

LOAD CURRENT (A)

EFFICIENCY (%)

STANDARD MAX797 5V/3A

CIRCUIT, FIGURE 1

f = 300kHz

= 6V

= 30V

100

0.001 10.10.01 10

EFFICIENCY vs.

LOAD CURRENT, 3.3V/3A CIRCUIT

MAX796-02

LOAD CURRENT (A)

EFFICIENCY (%)

STANDARD MAX797 3.3V/3A

CIRCUIT, FIGURE 1

f = 300kHz

= 12V

= 30V

= 5V

100

0.1 1 10

EFFICIENCY vs.

LOAD CURRENT, 3.3V/10A CIRCUIT

MAX796-03

LOAD CURRENT (A)

EFFICIENCY (%)

SKIP = LOW

SKIP = HIGH

STANDARD MAX797 3.3V/10A

CIRCUIT, FIGURE 1

f = 300kHz

= 5V

MAX796/MAX797/MAX799

Step-Down Controllers with

Synchronous Rectifier for CPU Power

6 _______________________________________________________________________________________

MAX799

SHDN

–5V

OUTPUT

+5V

OUTPUT

INPUT 6V TO 30V

BST

PGND

CSH

CSL

REF

FROM

REF

SYNC

GND

V+

SECFB

_____________________________________Typical Operating Circuits (continued)

1 2 3 4 5 6 7 8 9 10 11 ... 31 32

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