MAX649 Maxim, MAX649 Datasheet - Page 4

• Manufacturer Part Number: MAX649
• Description: 5V/3.3V/3V or Adjustable / High-Efficiency /
• Manufacturer: Maxim

5V/3.3V/3V or Adjustable, High-Efficiency,
Low I
__________________________________________Typical Operating Characteristics
(T
4
A
100
90
80
70
60
50
40
30
20
10
= +25°C, unless otherwise noted.)
17
16
15
_______________________________________________________________________________________
80
78
76
74
72
70
68
66
0
100
-60 -40 -20
-60
SUPPLY CURRENT vs. TEMPERATURE
V
-40
OUT
V+ = 5V
EFFICIENCY vs. LOAD CURRENT
= 5V
-20
1m
Q
vs. TEMPERATURE
SWITCH ON-TIME
0
TEMPERATURE (°C)
TEMPERATURE (°C)
LOAD CURRENT (A)
0
, Step-Down DC-DC Controllers
20
MAX649
20 40
10m
40
60
TOP TO BOTTOM:
60
100m
V+ = 4V
80
V+ = 10V
V+ = 16.5V
80 100 120
100
V
V
V
V
V
IN
IN
IN
IN
IN
= 6V
= 8V
= 10V
= 12V
= 15V
120
1
140
100
90
70
50
30
10
80
60
40
20
2.5
2.0
1.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
100
-60
-60 -40 -20
V
-40
OUT
V+ = 5V
V+ = 4V
EFFICIENCY vs. LOAD CURRENT
= 3.3V
-20
SHUTDOWN CURRENT
1m
vs. TEMPERATURE
vs. TEMPERATURE
SWITCH OFF-TIME
0
TEMPERATURE (°C)
TEMPERATURE (°C)
LOAD CURRENT (A)
0
V+ = 16.5V
20
MAX651
V+ = 8V
20
10m
40
40
60
TOP TO BOTTOM:
60
100m
80
V
V
V
V
V
V
80 100 120
100
IN
IN
IN
IN
IN
IN
= 4.3V
= 5V
= 8V
= 10V
= 12V
= 15V
120
1
140
2500
2000
1500
1000
500
100
8.0
7.8
7.6
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
90
80
70
60
50
40
30
20
10
0
0
-60
100
0 1 2 3 4 5 6 7 8 9 10 11 12 13 1415
MAX649 MAXIMUM LOAD CURRENT
V
CIRCUIT OF FIGURE 1
SWITCH ON-TIME/OFF-TIME RATIO
V
-40
OUT
V+ = 5V
OUT
EFFICIENCY vs. LOAD CURRENT
= 5V
-20
= 3V
vs. SUPPLY VOLTAGE
1m
vs. TEMPERATURE
INPUT VOLTAGE (V)
0
TEMPERATURE (°C)
LOAD CURRENT (A)
20
MAX652
10m
40
60
TOP TO BOTTOM:
80
100m
V
V
V
V
V
V
100
IN
IN
IN
IN
IN
IN
= 4.3V
= 5V
= 8V
= 10V
= 12V
= 15V
120
1
140