MAX1717 查看數據表（PDF） - Maxim Integrated
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MAX1717 Datasheet PDF : 33 Pages
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Dynamically Adjustable, Synchronous
Step-Down Controller for Notebook CPUs
Typical Operating Characteristics (continued)
(Circuit of Figure 1, components of Table 1, V+ = +12V, VDD = VCC = SKP/SDN = +5V, VOUT = 1.6V, TA = +25°C, unless otherwise noted.)
FREQUENCY vs. LOAD CURRENT
400 300kHz VOLTAGE POSITIONED, CIRCUIT 2
PWM MODE
300
200
SKIP MODE
100
FREQUENCY vs. LOAD CURRENT
1250
1000kHz VOLTAGE POSITIONED, CIRCUIT 5
1000 PWM MODE
750
500
SKIP MODE
250
FREQUENCY vs. INPUT VOLTAGE
400 300kHz VOLTAGE POSITIONED, CIRCUIT 2
350
IOUT = 12A
300
250
IOUT = 0.3A
0
0
3
6
9
12
LOAD CURRENT (A)
0
200
0
3
6
9
12
5
10
15
20
25
LOAD CURRENT (A)
INPUT VOLTAGE (V)
FREQUENCY vs. INPUT VOLTAGE
1200 1000kHz VOLTAGE POSITIONED, CIRCUIT 5
1000
IOUT = 12A
800
600
400
5
IOUT = 0.3A
10
15
20
25
INPUT VOLTAGE (V)
FREQUENCY vs. TEMPERATURE
350 300kHz VOLTAGE POSITIONED, CIRCUIT 2
340
330
320
310
300
-40 -20
0 20 40 60 80 85
TEMPERATURE (°C)
OUTPUT CURRENT AT CURRENT LIMIT
vs. TEMPERATURE
30 300kHz VOLTAGE POSITIONED, CIRCUIT 2
25
20
15
10
5
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 85
CONTINUOUS-TO-DISCONTINUOUS
INDUCTOR CURRENT POINT
3.0 300kHz VOLTAGE POSITIONED, CIRCUIT 2
2.5
2.0
1.5
1.0
0.5
0
0
5
10
15
20
25
INPUT VOLTAGE (V)
INDUCTOR CURRENT PEAKS AND
VALLEYS vs. INPUT VOLTAGE
30
25
IPEAK
20
IVALLEY
15
10
5
AT CURRENT-LIMIT POINT
0 300kHz VOLTAGE POSITIONED, CIRCUIT 2
5 7 9 11 13 15 17 19 21 23 25
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
1000
300kHz VOLTAGE POSITIONED, CIRCUIT 2,
SKIP MODE
800
ICC + IDD
600
400
200
I+
0
5
10
15
20
25
INPUT VOLTAGE (V)
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