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參數資料
| 型號： | MAX1649 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5V/3.3V or Adjustable, High-Efficiency,Low-Dropout, Step-Down DC-DC Controllers(5V或可調,降壓型，輸出電流2A,DC-DC變換器,MAX649的改進型) |
| 中文描述： | 5V/3.3V或可調、高效率、低壓差、降壓型DC-DC控制器 |
| 文件頁數： | 3/12頁 |
| 文件大?。?/td> | 167K |
| 代理商： | MAX1649 |
M
5V /3.3V or Adjustable, High-Effic ienc y,
Low-Dropout, S tep-Down DC-DC Controllers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
3V
≤
V+
≤
16V
V+ = 12V
V+ = 12V
CS Input Current
Switch Maximum On-Time
Switch Minimum Off-Time
±1
40
1.8
μA
μs
μs
C
EXT
= 0.001μF, V+ = 12V
C
EXT
= 0.001μF, V+ = 12V
EXT Rise Time
EXT Fall Time
25
25
ns
ns
Current-Limit Trip Level
(V+ to CS)
mV
V
CS
3V
≤
V+
≤
16V
80
110
140
t
ON
t
ON
+ t
OFF
x 100%
Maximum Duty Cycle
95
96.5
%
80
66
SUPPLY CURRENT vs. TEMPERATURE
68
78
I
μ
A
76
74
-60
-20
60
140
M
TEMPERATURE (°C)
20
100
-40
0
80
40
120
72
70
V+ = 10V
V+ = 16V
V+ = 4V
4.0
0
SHUTDOWN CURRENT
vs. TEMPERATURE
0.5
3.5
I
μ
A
3.0
2.5
-60
-20
60
140
M
TEMPERATURE (°C)
20
100
-40
0
80
40
120
2.0
1.5
V+ = 8V
V+ = 16V
V+ = 4V
1.0
24
0.8
32
1.1
t
ON
(max)
t
OFF
(min)
-60
-20
60
140
EXT RISE AND FALL TIMES
vs. TEMPERATURE (1nF)
M
TEMPERATURE (°C)
t
R
F
20
100
-40
0
80
40
120
60
55
50
45
40
35
30
25
20
15
V+ = 15V, t
FALL
V+ = 15V, t
RISE
V+ = 5V, t
FALL
V+ = 5V, t
RISE
C
EXT
= 1nF
1
10
10k
LOAD CURRENT (mA)
E
100
90
80
70
60
50
40
100
1k
0.1
M
EFFICIENCY
vs. LOAD CURRENT (V
OUT
= 5V)
V
= 5V
CIRCUIT OF
FIGURE 1
TOP TO
BOTTOM:
V
IN
= 6V
V
IN
= 8V
V
IN
= 10V
V
IN
= 12V
V
IN
= 15V
__________________________________________Typic al Operating Charac teristic s
(T
A
= +25°C, unless otherwise noted.)
40
-60
-20
60
140
EXT RISE AND FALL TIMES
vs. TEMPERATURE (5nF)
80
M
TEMPERATURE (°C)
t
R
F
20
100
-40
0
80
40
120
60
100
140
120
160
200
180
240
220
V+ = 15V, t
FALL
V+ = 15V, t
RISE
V+ = 5V, t
FALL
V+ = 5V, t
RISE
C
EXT
= 5nF
1
10
10k
LOAD CURRENT (mA)
E
100
90
80
70
60
50
40
100
1k
0.1
M
EFFICIENCY
vs. LOAD CURRENT (V
OUT
= 3.3V)
V
= 3.3V
CIRCUIT OF
FIGURE 1
TOP TO
BOTTOM:
V
IN
= 4.3V
V
IN
= 5V
V
IN
= 8V
V
IN
= 10V
V
IN
= 12V
V
IN
= 15V
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1651CPA | 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers |
| MAX1651CSA | 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers |
| MAX1651EPA | 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers |
| MAX1651ESA | 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1649CPA | 功能描述:DC/DC 開關控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1649CPA+ | 功能描述:DC/DC 開關控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1649CSA | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1649CSA+ | 功能描述:DC/DC 開關控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1649CSA+T | 功能描述:DC/DC 開關控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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