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參數(shù)資料
| 型號： | MAX1720 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Switched Capacitor Voltage Inverter with Shutdown(帶關(guān)斷功能的開關(guān)電容電壓反相器) |
| 中文描述： | SOT23封裝、開關(guān)電容電壓反相器，帶有關(guān)斷 |
| 文件頁數(shù)： | 7/18頁 |
| 文件大?。?/td> | 182K |
| 代理商： | MAX1720 |
MAX1720
http://onsemi.com
7
The MAX1720 primary function is a voltage inverter. The device will convert 5.0 V into 5.0 V with light loads. Two capacitors
are required for the inverter to function. A third capacitor, the input bypass capacitor, may be required depending on the power
source for the inverter. The performance for this device is illustrated below.
Figure 19. Inverter Load Regulation, Output Voltage vs. Output Current
0
2.0
30
5.0
20
10
V
o
,
6.0
0
I
out
, OUTPUT CURRENT (mA)
4.0
3.0
1.0
40
50
T
A
= 25
°
C
V
in
= 3.3 V
V
in
= 5.0 V
Figure 20. Cascaded Devices for Increased Negative Output Voltage
+
6
4
2
3
1
OSC
Capacitors = 10 F
+
V
in
5
+
6
4
2
3
1
OSC
+
5
V
out
+
Two or more devices can be cascaded for increased output voltage. Under light load conditions, the output voltage is
approximately equal to V
in
times the number of stages. The converter output resistance increases dramatically with each
additional stage. This is due to a reduction of input voltage to each successive stage as the converter output is loaded. Note that
the ground connection for each successive stage must connect to the negative output of the previous stage. The performance
characteristics for a converter consisting of two cascaded devices are shown below.
Figure 21. Cascade Load Regulation, Output Voltage vs. Output Current
2.0
4.0
10.0
0
I
out
, OUTPUT CURRENT (mA)
V
o
,
0
20
40
6.0
8.0
10
30
A
B
T
A
= 25
°
C
A
5.0
140
B
3.0
174
Curve
V
in
(V)
R
out
( )
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1720EUT | 功能描述:電荷泵 Switched Cap Voltage RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1720EUT+ | 制造商:Maxim Integrated Products 功能描述:CHG PUMP INV -1.25V TO -5.5V 25MA 6PIN SOT-23 - Rail/Tube |
| MAX1720EUT+T | 功能描述:電荷泵 Switched-Cap Voltage Inverter w/Shutdown RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1720EUTG | 功能描述:電荷泵 Switched Cap Voltage Inverter w/Shutdown RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX1720EUT-T | 功能描述:電荷泵 Switched-Cap Voltage Inverter w/Shutdown RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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