MAX1678 Maxim, MAX1678 Datasheet - Page 4
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MAX1678
Manufacturer Part Number
MAX1678
Description
1-Cell to 2-Cell / Low-Noise / High-Efficiency / Step-Up DC-DC Converter
Manufacturer
Maxim
Datasheet
1.MAX1678.pdf
(12 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX1678EUA
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX1678EUA+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
MAX1678EUG
Manufacturer:
MAX
Quantity:
5 510
Company:
Part Number:
MAX1678EUG
Manufacturer:
OMRON
Quantity:
5 510
1-Cell to 2-Cell, Low-Noise,
High-Efficiency, Step-Up DC-DC Converter
(Circuit of Figure 7 (Fixed Mode, 3.3V) or Figure 8 (Adjustable Mode), T
4
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_______________________________________________________________________________________
0
0
0
0.01
0.01
0.01
V
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
V
IN
IN
= 3.0V
V
= 2.0V
(V
(V
(V
IN
0.1
0.1
0.1
= 4.5V
OUT
OUT
OUT
V
LOAD CURRENT (mA)
IN
LOAD CURRENT (mA)
V
LOAD CURRENT (mA)
IN
V
= 3.3V, L1 = 22 H)
= 2.5V
= 5.0V, L1 = 22 H)
= 2.4V, L1 = 22 H)
IN
= 0.85V
= 1.5V
V
L1 = 22 H
SUMIDA CD43-220
R1 = 200k , R2 = 200k
IN
V
L1 = 22 H
SUMIDA CD43-220
R1 = 619k , R2 = 200k
1
1
1
IN
= 0.85V
= 0.85V
V
L1 = 22 H
SUMIDA CD43-220
FB = GND
IN
= 1.2V
V
V
10
10
10
IN
IN
V
V
= 1.5V
IN
= 2.0V
IN
V
= 1.2V
= 1.2V
IN
= 2.0V
100 200
100 200
100 200
100
100
100
90
70
50
30
10
90
70
50
30
10
90
70
50
30
10
80
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20
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60
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60
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0
0
0
0.01
0.01
0.01
V
(V
(V
(V
IN
V
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
OUT
OUT
IN
OUT
= 3.0V
= 2.5V
0.1
0.1
0.1
V
= 2.4V, L1 = SUMIDA 47 H)
= 3.3V, L1 = SUMIDA 47 H)
= 5.0V, L1 = SUMIDA 47 H)
IN
= 4.5V
V
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
IN
V
IN
IN
= 1.5V
= 0.85V
= 0.85V
L1 = 47 H
SUMIDA CD43-470
R1 = 200k , R2 = 200k
V
L1 = 47 H
SUMIDA CD43-470
R1 = 619k , R2 = 200k
1
1
1
IN
V
IN
A
= 0.85V
= 1.2V
Typical Operating Characteristics
L1 = 47 H
SUMIDA CD43-470
FB = GND
= +25°C, unless otherwise noted.)
V
V
V
IN
IN
IN
V
10
10
10
= 1.5V
IN
= 2.0V
V
= 2.0V
IN
= 1.2V
V
= 1.2V
IN
= 2.0V
100 200
100 200
100 200
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100
100
90
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70
60
50
40
30
20
10
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80
70
60
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20
10
90
70
50
30
10
80
60
40
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0
0
0
0.01
0.01
0.01
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
V
EFFICIENCY vs. LOAD CURRENT
V
(V
(V
V
IN
(V
IN
IN
OUT
OUT
= 3.0V
OUT
= 1.5V
0.1
= 4.5V
0.1
0.1
V
= 3.3V, L1 = TDK 47 H)
= 5.0V, L1 = TDK 47 H)
V
= 2.4V, L1 = TDK 47 H)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
LOAD CURRENT (mA)
IN
V
IN
IN
IN
V
= 2.5V
= 0.85V
IN
= 0.85V
= 2.0V
= 0.85V
L1 = 47 H
TDK NLC453232T-470K
R1 = 200k , R2 = 200k
1
L1 = 47 H
TDK NLC453232-470K
R1 = 619k , R2 = 200k
1
1
V
L1 = 47 H
TDK NLC453232T-470K
FB = GND
IN
= 1.2V
V
IN
V
V
= 1.2V
IN
10
10
IN
10
V
= 1.2V
= 1.5V
IN
V
IN
= 2.0V
= 2.0V
100 200
100 200
100 200