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參數資料
| 型號： | MAX829 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Switched Capacitor Voltage Converter |
| 中文描述： | 開關電容電壓反相器 |
| 文件頁數： | 15/18頁 |
| 文件大小： | 158K |
| 代理商： | MAX829 |
MAX828, MAX829
http://onsemi.com
15
2.6
I
out
, OUTPUT CURRENT (A)
Figure 46. Current Boosted Load Regulation,
Output Voltage vs. Output Current MAX828
V
o
,
0
0.4
0.5
0.3
0.2
0.1
0.6
3.2
2.4
2.8
2.2
V
in
= 5.0 V
R
out
= 0.9
T
A
= 25
°
C
3.0
2.6
I
out
, OUTPUT CURRENT (A)
Figure 47. Current Boosted Load Regulation,
Output Voltage vs. Output Current MAX829
V
o
,
0
0.4
0.5
0.3
0.2
0.1
0.6
3.2
2.4
2.8
2.2
2.0
V
in
= 5.0 V
R
out
= 1.0
T
A
= 25
°
C
3.0
Figure 48. Positive Output Voltage Doubler with High Current Capability
+
5
4
2
3
1
OSC
+
V
in
V
out
Q
1
C
3
+
C
2
Q
2
C
1
Capacitors = 220 F
Q
1
= PZT751
Q
2
= PZT651
50
50
The MAX828/829 can be configured to produce a positive output voltage doubler with current capability in excess of
500 mA. This is accomplished with the addition of two external switch transistors and two Schottky diodes. The output voltage
is approximately equal to 2V
in
minus the sum of the base emitter drops of both transistors and the forward voltage of both
diodes. The performance characteristics for the converter are shown below. Note that the output resistance is reduced to 1.8
.
8.0
I
out
, OUTPUT CURRENT (mA)
Figure 49. Positive Doubler with Current
Boosted Load Regulation, Output Voltage vs.
Output Current, MAX828
V
o
,
0
0.4
0.5
0.3
0.2
0.1
6.8
8.4
7.6
8.8
V
in
= 5.0 V
R
out
= 1.8
T
A
= 25
°
C
7.2
I
out
, OUTPUT CURRENT (mA)
Figure 50. Positive Doubler with Current
Boosted Load Regulation, Output Voltage vs.
Output Current, MAX829
V
o
,
7.0
9.0
V
in
= 5.0 V
R
out
= 1.8
T
A
= 25
°
C
7.4
8.6
8.2
7.8
0.6
0
0.4
0.5
0.3
0.2
0.1
0.6
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX829C/D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Switched-Capacitor Voltage Inverters |
| MAX829C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX829EUK | 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 |
| MAX829EUK+ | 制造商:Maxim Integrated Products 功能描述:CHG PUMP INV -5.5V TO -1.5V 25MA 5PIN SOT-23 - Rail/Tube |
| MAX829EUK+T | 功能描述:電荷泵 Switched-Capacitor Voltage Inverter 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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