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參數(shù)資料
| 型號： | MAX8740 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | TFT-LCD Step-Up DC-DC Converter |
| 中文描述： | TFT-LCD升壓型DC-DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 341K |
| 代理商： | MAX8740 |
M
TFT-LCD Step-Up DC-DC Converter
4
_______________________________________________________________________________________
EFFICIENCY vs. LOAD CURRENT
(1.2MHz OPERATION)
M
LOAD CURRENT (mA)
E
100
10
50
60
70
80
90
100
40
1
1000
L = 2.7
μ
H
f
OSC
= 1.2MHz
V
IN
= 5.0V
V
IN
= 3.3V
EFFICIENCY vs. LOAD CURRENT
M
LOAD CURRENT (mA)
E
100
10
50
60
70
80
90
100
40
1
1000
L = 5.6
μ
H
f
OSC
= 640kHz
V
IN
= 5.0V
V
IN
= 3.3V
M
OUTPUT VOLTAGE vs. LOAD CURRENT
LOAD CURRENT (mA)
O
1
10
100
1000
10,000
11.5
11.7
11.9
12.1
12.3
12.5
12.7
12.9
V
IN
= 5.0V
V
IN
= 3.3V
f
OSC
= 1.2MHz
L = 2.7
μ
H
M
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
S
2.5
3.0
3.5
4.0
4.5
5.0
5.5
400
600
800
1000
1200
1400
FREQ = IN
FREQ = GND
M
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
S
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.1
0.2
0.3
0.4
0.5
0.6
0.7
SWITCHING
NONSWITCHING
M
SUPPLY CURRENT vs. TEMPERATURE
(SWITCHING)
TEMPERATURE (
°
C)
S
-40
-20
0
20
40
60
80
100
0.45
0.50
0.55
0.60
V
IN
= 5.0V
V
IN
= 3.3V
SOFT-START
(R
LOAD
= 30
)
MAX8740 toc07
2ms/div
SWITCHING WAVEFORMS
(I
LOAD
= 800mA)
MAX8740 toc08
400ns/div
Typical Operating Characteristics
(Circuit of Figure 1. V
IN
= 5V, V
MAIN
= 15V, 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 |
|---|---|
| MAX8740ETB | 制造商:Maxim Integrated Products 功能描述:LOW COST LCD MONITOR PANEL POWER SU - Rail/Tube |
| MAX8740ETB+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX8740ETB+T | 功能描述:LCD 驅(qū)動器 TFT-LCD Step-Up DC/DC Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8740ETB-T | 功能描述:LCD 驅(qū)動器 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX8740EUB+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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