MAX1711 Maxim, MAX1711 Datasheet - Page 6

• Manufacturer Part Number: MAX1711
• Description: High-Speed / Digitally Adjusted Step-Down Controllers for Notebook CPUs
• Manufacturer: Maxim

High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
(7A CPU supply circuit of Figure 1, T
6
_____________________________Typical Operating Characteristics (continued)
_______________________________________________________________________________________
0.7
0.6
0.5
0.4
0.3
0.2
0.1
315
310
305
300
295
290
285
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0
-60
0
TON = OPEN
CONTINUOUS TO DISCONTINUOUS
FREQUENCY vs. TEMPERATURE
-40
NO-LOAD SUPPLY CURRENTS
5
INDUCTOR CURRENT POINT
(SKIP MODE, f = 550kHz)
5
(V
-20
vs. INPUT VOLTAGE
vs. INPUT VOLTAGE
V
IN
INPUT VOLTAGE (V)
10
O
I
TEMPERATURE (°C)
INPUT VOLTAGE (V)
BATT
10
= 2.0V
= 15V, V
I
0
CC
15
V
20
15
O
I
= 1.6V
DD
O
= 2.0V)
40
V
20
O
20
= 1.3V
I
I
I
O
O
O
60
= 7A
= 4A
= 1A
25
25
A
80
= +25°C, unless otherwise noted.)
30
100
30
474
472
470
468
466
464
462
460
458
456
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
20
18
16
14
12
10
8
6
4
2
0
-60
0
0
-40 -20
INDUCTOR CURRENT PEAKS AND
NO-LOAD SUPPLY CURRENTS
ON-TIME vs. TEMPERATURE
VALLEYS vs. INPUT VOLTAGE
5
(PWM MODE, f = 300kHz)
(AT CURRENT-LIMIT POINT)
5
I
DD
I
BAT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
10
TEMPERATURE (°C)
INPUT VOLTAGE (V)
10
I
CC
0
I
I
15
20
PEAK
VALLEY
15
I
O
I
O
= 4A OR 7A
= 1A
40
20
20
60
25
25
80
100
30
30
0.7
0.6
0.5
0.4
0.3
0.2
0.1
20
18
16
14
12
10
30
25
20
15
10
8
6
4
2
0
5
0
0
-60
0
0
-40
NO-LOAD SUPPLY CURRENTS
NO-LOAD SUPPLY CURRENTS
CURRENT-LIMIT TRIP POINT
5
5
(PWM MODE, f = 550kHz)
(SKIP MODE, f = 300kHz)
-20
I
I
vs. INPUT VOLTAGE
DD
vs. INPUT VOLTAGE
BAT
vs. TEMPERATURE
INPUT VOLTAGE (V)
10
TEMPERATURE (°C)
INPUT VOLTAGE (V)
10
I
CC
0
I
CC
I
15
BATT
15
20
I
DD
I
LIM
40
I
20
20
LIM
I
LIM
= 400k
= 100k
60
= V
25
CC
25
80
100
30
30