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MAX640 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX640
Description  5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX640 Datasheet(HTML) 4 Page - Maxim Integrated Products

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0
10
MAX640
OUTPUT VOLTAGE RIPPLE vs.
INPUT VOLTAGE
25
100
V+ (V)
7
75
150
3
4
5
6
8
9
11
12
IOUT = 25mA
L = 100
µH
125
50
L = 220
µH
L = 470
µH
0
10
MAX653
OUTPUT VOLTAGE RIPPLE vs.
INPUT VOLTAGE
25
100
V+ (V)
7
75
150
3
4
5
6
8
9
11
12
ILOAD = 25mA
125
50
L = 220
µH
L = 470
µH
L = 100
µH
5V/3.3V/3V/Adjustable, High-Efficiency,
Low IQ, Step-Down DC-DC Converters
4
_______________________________________________________________________________________
100
50
10
µ
100
µ
1
EFFICIENCY vs.
OUTPUT CURRENT
60
OUTPUT CURRENT (A)
70
80
90
1m
10m
100m
L = 100
µH
MAX639, V+ = 6V
MAX640, V+ = 4.3V
MAX653, V+ = 4V
100
10
MAXIMUM OUTPUT CURRENT vs.
INPUT VOLTAGE
200
V+ (V)
7
250
3
4
5
6
8
9
11
12
150
MAX640
MAX653
MAX639
L = 100
µH
80
10
EFFICIENCY vs.
INPUT VOLTAGE
85
95
V+ (V)
7
90
100
3
4
5
6
8
9
11
12
IOUT = 100mA
MAX639
MAX640
MAX653
80
10
EFFICIENCY vs.
INPUT VOLTAGE
85
95
V+ (V)
7
90
100
3
4
5
6
8
9
11
12
L = 470
µH
IOUT = 25mA
MAX639
MAX640
MAX653
25
10
MAXIMUM OUTPUT CURRENT vs.
INPUT VOLTAGE
65
V+ (V)
7
75
3
4
5
6
8
9
11
12
55
MAX640
MAX653
MAX639
45
35
L = 470µH
0
10
MAX639
OUTPUT VOLTAGE RIPPLE vs.
INPUT VOLTAGE
25
100
INPUT VOLTAGE (V)
7
75
150
5
6
8
9
11
12
L = 100
µH
125
50
L = 220
µH
L = 470
µH
IOUT = 25mA
_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 3, internal feedback, L = 100µH, TA = +25°C, unless otherwise noted.)



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