Rainbow-electronics MAX17000 Bedienungsanleitung PDF herunterladen (Seite 8)

MAX17000

Complete DDR2 and DDR3 Memory

Power-Management Solution

8 _______________________________________________________________________________________

Typical Operating Characteristics

(MAX17000 Circuit of Figure 1, V

= 12V, V

= V

= 5V, SKIP = GND, T

= +25°C, unless otherwise noted.)

SMPS 1.8V EFFICIENCY

vs. LOAD CURRENT

MAX17000 toc01

LOAD CURRENT (A)

EFFICIENCY (%)

10.1

100

0.01 10

STANDBY MODE

PWM MODE

= 7V

SKIP MODE

SMPS 1.8V EFFICIENCY

vs. LOAD CURRENT

MAX17000 toc02

LOAD CURRENT (A)

EFFICIENCY (%)

10.1

100

0.01 10

STANDBY MODE

PWM MODE

= 12V

SKIP MODE

SMPS 1.8V EFFICIENCY

vs. LOAD CURRENT

MAX17000 toc03

LOAD CURRENT (A)

EFFICIENCY (%)

10.1

100

0.01 10

STANDBY MODE

PWM MODE

= 20V

SKIP MODE

SMPS 1.8V OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX17000 toc04

LOAD CURRENT (A)

OUTPUT VOLTAGE (V)

0.1 10.01

1.79

1.80

1.81

1.82

1.78

0.001 10

PWM MODE

= 12V

SKIP MODE

SMPS SWITCHING FREQUENCY

vs. LOAD CURRENT

MAX17000 toc05

LOAD CURRENT (A)

SWITCHING FREQUENCY (kHz)

4682

100

200

150

300

250

350

010

= 12V

OUT

= 1.8V

SMPS VALLEY-CURRENT LIMIT

vs. INPUT VOLTAGE

MAX17000 toc06

INPUT VOLTAGE (V)

CURRENT LIMIT (A)

12 16 20 248

9.75

10.00

10.25

10.50

9.50

428

SENSE

= 2m

NO-LOAD SUPPLY CURRENT

vs. INPUT VOLTAGE

MAX17000 toc07

INPUT VOLTAGE (V)

SUPPLY CURRENT (mA)

12 16 20 248

0.1

100

0.01

428

PWM MODE, I

+ I

SKIP MODE, I

+ I

SKIP MODE, I

STANDBY MODE, I

+ I

STANDBY MODE, I

PWM MODE, I

NO LOAD

PRESET 1.5V OUTPUT

VOLTAGE DISTRIBUTION

MAX17000 toc08

OUTPUT VOLTAGE (V)

SAMPLE PERCENTAGE (%)

1.500 1.5051.495

1.490 1.510

SAMPLE SIZE = 150 +85

+25

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 30 31

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