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MAX1684 Datasheet(PDF) 5 Page - Maxim Integrated Products

Part No. MAX1684
Description  Low-Noise, 14V Input, 1A, PWM Step-Down Converters
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX1684 Datasheet(HTML) 5 Page - Maxim Integrated Products

 
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Low-Noise, 14V Input, 1A, PWM
Step-Down Converters
_______________________________________________________________________________________
5
100
0
0.1
1
10
100
1,000
10,000
MAX1684
EFFICIENCY vs. LOAD CURRENT
(VIN = 3.3V, VOUT = 1.8V, 2.5V)
20
10
LOAD CURRENT (mA)
40
30
60
80
90
70
50
A: VOUT = 2.5V LP MODE
B: VOUT = 1.8V LP MODE
C: VOUT = 2.5V NORM MODE
D: VOUT = 1.8V NORM MODE
E: VOUT = 2.5V PWM MODE
F: VOUT = 1.8V PWM MODE
A
D
E
B
F
C
100
0
0.1
1
10
100
1,000
10,000
MAX1684
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V)
20
10
LOAD CURRENT (mA)
40
30
60
80
90
70
50
A: VIN = 4V LOW-POWER MODE
B: VIN = 12V LOW-POWER MODE
C: VIN = 4V NORMAL MODE
D: VIN = 12V NORMAL MODE
D
C
A
B
1
100
10
1,000
10,000
MAX1684
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V, PWM MODE)
LOAD CURRENT (mA)
100
0
20
10
50
40
30
70
60
90
80
A: VIN = 4V
B: VIN = 5V
C: VIN = 9V
D: VIN = 12V
C
B
A
D
100
20
0.1
1
10
100
1,000
10,000
MAX1684
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5V)
40
30
LOAD CURRENT (mA)
50
70
90
80
60
A: VIN = 6V LP MODE
B: VIN = 9V LP MODE
C: VIN = 12V LP MODE
D: VIN = 6V NORMAL MODE
E: VIN = 9V NORMAL MODE
F: VIN = 12V NORMAL MODE
E
B
F
E
D
A
C
100
0
0.1
1
10
100
1,000
10,000
MAX1685
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V)
20
10
LOAD CURRENT (mA)
40
30
60
80
90
70
50
A: VIN = 4V LP MODE
B: VIN = 12V LP MODE
C: VIN = 4V NORMAL MODE
D: VIN = 12V NORMAL MODE
D
C
B
A
1
100
10
1,000
10,000
MAX1684
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5V, PWM MODE)
LOAD CURRENT (mA)
100
0
20
10
50
40
30
70
60
90
80
A: VIN = 6V
B: VIN = 9V
C: VIN =12V
C
B
A
1
100
10
1,000
10,000
MAX1685
EFFICIENCY vs. LOAD CURRENT
(VOUT = 3.3V, PWM MODE)
LOAD CURRENT (mA)
100
0
20
10
50
40
30
70
60
90
80
VIN = 5V
VIN =9V
VIN = 12V
VIN = 4V
1
100
10
1,000
10,000
MAX1685
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5V PWM MODE)
LOAD CURRENT (mA)
100
0
20
10
50
40
30
70
60
90
80
VIN = 6V
VIN = 9V
VIN =12V
100
0
0.1
1
10
100
1,000
10,000
MAX1685
EFFICIENCY vs. LOAD CURRENT
(VOUT = 5V)
20
10
LOAD CURRENT (mA)
40
30
60
80
90
70
50
A: VIN = 6V LOW-POWER MODE
B: VIN = 9V LOW-POWER MODE
C: VIN = 12V LOW-POWER MODE
D: VIN = 6V NORMAL MODE
E: VIN = 9V NORMAL MODE
F: VIN =12V NORMAL MODE
A
F
E
D
C
B
Typical Operating Characteristics
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)


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