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參數(shù)資料
| 型號(hào)： | MAX1774EEI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover |
| 中文描述： | 3 A SWITCHING CONTROLLER, 1250 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-28 |
| 文件頁(yè)數(shù)： | 8/21頁(yè) |
| 文件大?。?/td> | 398K |
| 代理商： | MAX1774EEI |
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M
Dual, High-Effic ienc y, S tep-Down
Converter with Bac kup Battery S witc hover
8
_______________________________________________________________________________________
Typic al Operating Charac teristic s
(Circuit of Figure 1, V
IN
= +5V, V
INC
= +3.3V, T
A
= +25
°
C, unless otherwise noted.)
100
0
1
10
100
1000
10,000
MAIN EFFICIENCY vs. LOAD
20
M
LOAD (mA)
E
40
60
80
70
50
30
10
90
V
IN
= +5V
V
IN
= +15V
V
IN
= +3.3V
V
IN
= +18V
V
IN
= +12V
V
MAIN
= 3.3V
90
0
1
1000
100
10
CORE EFFICIENCY vs. LOAD
30
20
10
70
60
50
100
40
80
M
LOAD (mA)
E
V
IN
= +5V
V
IN
= +2.7V
V
IN
= +3.3V
V
CORE
= 1.8V
100
0
0.01
0.1
1
10
100
BACKUP EFFICIENCY vs. LOAD
20
M
LOAD
(mA)
E
40
60
80
70
50
30
10
90
V
BBATT
= +0.8V
V
BBATT
= +1.0V
V
BBATT
= +2.5V
V
MAIN
= 3.3V
MAIN SWITCHING WAVEFORMS
(HEAVY LOAD 1A)
MAX1774-07
5
μ
s/div
4V
LX
5V/div
0
20mV
0
-20mV
1500mA
500mA
0
1000mA
V
(AC-COUPLED)
20mV/div
IL1
500mA/div
V
REF
ACCURACY vs. TEMPERATURE
M
-2.0
-1.5
-0.5
-1.0
1.0
1.5
0.5
0
2.0
V
R
-40
0
20
-20
40
60
80
100
TEMPERATURE (
°
C)
V
R
-1.6
-1.8
-2.0
-1.2
-1.4
-0.8
-1.0
-0.6
-0.4
-0.2
0
0
20
30
10
40
50
60
70
80
REFERENCE LOAD REGULATION
M
I
REF
(
μ
A)
MAIN SWITCHING WAVEFORMS
(LIGHT LOAD 100mA)
MAX1774-06
5
μ
s/div
5V
LX
5V/div
0
40mV
20mV
0
V
MAIN
(AC-COUPLED)
20mV/div
I
500mA/div
-20mV
500mA
0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1774EEI+ | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Dual Step-Down w/Switchover RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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(fēng)格:SMD/SMT |
| MAX1774EEI+T | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 Dual Step-Down w/Switchover RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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(fēng)格:SMD/SMT |
| MAX1774EEI-T | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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(fēng)格:SMD/SMT |
| MAX1774EGJ | 制造商:Maxim Integrated Products 功能描述: |
| MAX1774EMJ | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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(fēng)格:SMD/SMT |
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