MAX8550-MAX8551 MAXIM [Maxim Integrated Products], MAX8550-MAX8551 Datasheet - Page 6

• Manufacturer Part Number: MAX8550-MAX8551
• Description: Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards
• Manufacturer: MAXIM [Maxim Integrated Products]

Integrated DDR Power-Supply Solutions for
Desktops, Notebooks, and Graphic Cards
(V
6
VIN
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
100
700
680
660
640
620
600
580
560
540
520
500
480
460
440
420
400
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
0
SWITCHING FREQUENCY vs. INPUT VOLTAGE
= 12V, V
0.01
-3
4
f
SW
6
EFFICIENCY vs. LOAD CURRENT
= 600kHz
-2
8 10 12 14 16 18
OUT
0.1
vs. VTT CURRENT
VTT VOLTAGE
-1
V
= 2.5V, TON = GND, SKIP = AV
(TON = GND)
(TON = GND)
OUT
I
LOAD
I
V
VTT
= 1.5V
IN
1
0
(V)
(A)
(A)
V
OUT
20 22
1
= 1.8V
I
I
V
LOAD
SKIP = GND
SKIP = AV
10
LOAD
OUT
24
= 12A
2
= 2.5V
= 0A
26
DD
100
28
3
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
100
700
690
680
670
660
650
640
630
620
610
600
90
80
70
60
50
40
30
20
10
0
SWITCHING FREQUENCY vs. TEMPERATURE
DD
0.01
-40
-15
, circuit of Figure 8, T
f
SW
-25
EFFICIENCY vs. LOAD CURRENT
= 300kHz
-10
-10
0.1
vs. VTTR CURRENT
TEMPERATURE (°C)
VTTR VOLTAGE
-5
(TON = OPEN)
(TON = GND)
5
I
I
VTTR
LOAD
V
20
OUT
1
0
(mA)
(A)
Typical Operating Characteristics
= 1.5V
35
V
A
5
OUT
50
SKIP = GND
SKIP = AV
= +25°C, unless otherwise noted.)
10
I
V
LOAD
= 1.8V
OUT
65
10
= 12A
= 2.5V
DD
80
100
15
2.540
2.535
2.530
2.525
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
SWITCHING FREQUENCY vs. LOAD CURRENT
0
4
0
6
1
2
8 10 12 14 16 18
2
3
vs. LOAD CURRENT
OUTPUT VOLTAGE
LINE REGULATION
4
(V
4
(TON = GND)
OUT
5
I
I
6
LOAD
LOAD
V
IN
vs. V
6
(V)
(A)
(A)
8
7
IN
I
LOAD
20 22
I
)
LOAD
8
V
TON = GND
10
SKIP = GND
SKIP = AV
IN
SKIP = GND
SKIP = AV
= 0A
9
= 15V,
= 12A
24
10
12
26
11
DD
DD
14
28
12