參數(shù)資料
型號: MAX1712
廠商: Maxim Integrated Products, Inc.
英文描述: High-Speed, Digitally Adjusted Step-Down Controllers for Notebook CPUs
中文描述: 高速、數(shù)字可調(diào)、降壓型控制器,用于筆記本電腦
文件頁數(shù): 6/28頁
文件大?。?/td> 437K
代理商: MAX1712
M
High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
6
_______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(7A CPU supply circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
FREQUENCY vs. TEMPERATURE
(V
IN
= 15V, V
O
= 2.0V)
474
0
0.2
0.1
0.5
0.4
0.3
0.8
0.7
0.6
0.9
0
10
INPUT VOLTAGE (V)
5
15
20
25
30
CONTINUOUS TO DISCONTINUOUS
INDUCTOR CURRENT POINT
vs. INPUT VOLTAGE
M
L
V
O
= 2.0V
V
O
= 1.6V
V
O
= 1.3V
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
0
10
INPUT VOLTAGE (V)
5
15
20
25
30
INDUCTOR CURRENT PEAKS AND
VALLEYS vs. INPUT VOLTAGE
(AT CURRENT-LIMIT POINT)
M
I
I
PEAK
I
VALLEY
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0
5
15
25
10
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(PWM MODE, f = 550kHz)
20
30
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(SKIP MODE, f = 300kHz)
M
S
I
CC
I
BATT
I
DD
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0
10
INPUT VOLTAGE (V)
20
30
5
15
25
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(SKIP MODE, f = 550kHz)
M
S
I
CC
I
BATT
I
DD
0
6
4
2
8
10
12
14
16
18
20
0
10
INPUT VOLTAGE (V)
5
15
20
25
30
NO-LOAD SUPPLY CURRENTS
vs. INPUT VOLTAGE
(PWM MODE, f = 300kHz)
M
S
I
DD
I
BAT
I
CC
0
6
4
2
8
10
12
14
16
18
20
0
10
INPUT VOLTAGE (V)
5
15
20
25
30
M
S
I
DD
I
BAT
I
CC
285
290
295
300
305
310
315
-60
-20
-40
0
20
40
60
80
100
M
TEMPERATURE (°C)
F
I
O
= 7A
I
O
= 4A
I
O
= 1A
TON = OPEN
456
460
458
466
464
462
472
470
468
-60
0
20
-40
-20
40
60
80
100
ON-TIME vs. TEMPERATURE
M
TEMPERATURE (
°
C)
O
I
O
= 1A
I
O
= 4A OR 7A
0
5
10
15
20
25
30
-60
-20
-40
0
20
40
60
80
100
CURRENT-LIMIT TRIP POINT
vs. TEMPERATURE
M
TEMPERATURE (
°
C)
C
I
LIM
= 400k
I
LIM
= V
CC
I
LIM
= 100k
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