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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 11/18頁(yè) |
| 文件大小： | 182K |
| 代理商： | MAX1720 |
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MAX1720
http://onsemi.com
11
A zener diode can be used with the shutdown input to provide closed loop regulation performance. This significantly reduces
the converter’s output resistance and dramatically enhances the load regulation. For closed loop operation, the desired
regulated output voltage must be lower in magnitude than V
in
. The output will regulate at a level of V
Z
+ V
th(SHDN)
. Note that
the shutdown input voltage threshold is typically 0.5 V
in
and therefore, the regulated output voltage will change proportional
to the converter’s input. This characteristic will not present a problem when used in applications with constant input voltage.
In this case the zener breakdown was measured at 25 A. The performance characteristics for the above converter are shown
below. Note that the dashed curve sections represent the converter’s open loop performance.
0
2.0
30
20
10
V
o
,
5.0
1.0
I
out
, OUTPUT CURRENT (mA)
4.0
3.0
40
60
50
Figure 31. Load Regulation, Output Voltage vs.
Output Current
A
B
T
A
= 25
°
C
A
3.3 V
4.5
B
5.0 V
6.5
Curve
V
in
(V)
V
z
(V)
2.8
3.8
V
out
(V)
Capacitors = 10 F
+
6
4
2
3
1
OSC
+
V
in
5
V
out
+
R
1
R
2
10 k
Figure 32. Line and Load Regulated Negative Output Voltage
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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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