參數(shù)資料
型號： MAX1678
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： 1-Cell to 2-Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter
中文描述： 1節(jié)至2節(jié)電池、低噪聲、高效率、升壓型DC-DC轉(zhuǎn)換器
文件頁數(shù)： 5/12頁
文件大小： 166K
代理商： MAX1678
M
1-Cell to 2-Cell, Low-Noise,
High-Effic ienc y, S tep-Up DC-DC Converter
_______________________________________________________________________________________
5
90
50
COILCRAFT
EFFICIENCY WITH DIFFERENT INDUCTORS
55
85
80
D
D
C
4
μ
H
4
μ
H
4
μ
H
4
μ
H
2
μ
H
4
μ
H
2
μ
H
2
μ
H
C
L
L
N
N
M
E
75
70
65
60
V
BATT
= 1.2V
V
OUT
= 3.3V
I
LOAD
= 20mA
SUMIDA
MURATA
TDK
1000
10
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
M
N
μ
A
100
V
OUT
= 5.0V
R1 = 3M
, R2 = 1M
V
= 3.0V
FB = GND
L1 = 47
μ
H
SUMIDA CD43-470
V
OUT
= 2.4V
R1 = 1M
, R2 = 1M
45
0
-40
100
BATT AND OUT QUIESCENT CURRENT
vs. TEMPERATURE
10
5
40
35
30
M
TEMPERATURE (°C)
Q
μ
A
0
-20
80
60
40
20
25
20
15
V
BATT
= 1.3V
V
OUT
= 3.6V
FB = GND
I
OUT
I
BATT
12
0
0
6
SHUTDOWN BATTERY CURRENT
vs. INPUT VOLTAGE
2
10
8
M
INPUT VOLTAGE (V)
S
μ
A
2
1
5
4
3
6
4
3.3V FIXED MODE
L1 = 47
μ
H
SUMIDA CD43-470
140
0
0
5.0
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
(L1 = 22
μ
H)
20
120
100
M
INPUT VOLTAGE (V)
M
1.5
1.0
0.5
4.5
3.5 4.0
3.0
2.5
2.0
80
60
40
L1 = 22
μ
H
SUMIDA CD43-220
V
OUT
= 3.3V
V
OUT
= 5.0V
V
OUT
= 2.4V
9.0
7.6
-40
100
ON-TIME CONSTANT (K)
vs. TEMPERATURE
7.8
8.8
8.6
M
TEMPERATURE (°C)
O
μ
s
0
-20
80
60
40
20
8.4
8.2
8.0
V
BATT
= 1.3V
1.3
0.6
0
35
MINIMUM START-UP INPUT VOLTAGE
vs. LOAD CURRENT
0.7
1.2
1.1
M
LOAD CURRENT (mA)
S
10
5
30
25
20
15
1.0
0.9
0.8
L1 = 47
μ
H
SUMIDA CD43-470
3.3V FIXED MODE
WITH EXTERNAL
SCHOTTKY DIODE
(FIGURE 3)
WITHOUT
DIODE
140
0
0
5.0
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
(L1 = SUMIDA 47
μ
H)
20
120
100
M
INPUT VOLTAGE (V)
M
1.5
1.0
0.5
4.5
3.5 4.0
3.0
2.5
2.0
80
60
40
L1 = 47
μ
H
SUMIDA CD43-470
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.4V
140
0
0
5.0
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
(L1 = TDK 47
μ
H)
20
120
100
M
INPUT VOLTAGE (V)
M
1.5
1.0
0.5
4.5
3.5 4.0
3.0
2.5
2.0
80
60
40
L1 = 47
μ
H
TDK NLC453232T-470K
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.4V
Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 7 (Fixed Mode, 3.3V) or Figure 8 (Adjustable Mode), T
A
= +25°C, unless otherwise noted.)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1678ESA 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1678EUA 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
MAX1678EUA+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-2 Cell Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
MAX1678EUA+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1-2 Cell Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
MAX1678EUAT 制造商:Maxim Integrated Products 功能描述:
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