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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(kāi)關(guān)電容電壓反相器) |
| 中文描述： | SOT23封裝、開(kāi)關(guān)電容電壓反相器，帶有關(guān)斷 |
| 文件頁(yè)數(shù)： | 17/18頁(yè) |
| 文件大?。?/td> | 182K |
| 代理商： | MAX1720 |
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MAX1720
http://onsemi.com
17
All of the previously shown converter circuits have only single outputs. Applications requiring multiple outputs can be
constructed by incorporating combinations of the former circuits. The converter shown above combines Figures 26 and 32 to
form a regulated negative output inverter with a nonregulated positive output doubler. The magnitude of V
out
is controlled
by the resistor values and follows the relationship V
ref
(R
2
/R
1
+ 1). Since the positive output is not within the feedback loop,
its output voltage will increase as the negative output load increases. This cross regulation characteristic is shown in the upper
portion of Figure 50. The dashed line is the open loop and the solid line is the closed loop configuration for the load regulation.
The load regulation for the positive doubler with a constant load on the V
out
is shown in Figure 51.
4.0
5.0
3.0
8.0
9.0
I
out
, NEGATIVE INVERTER OUTPUT CURRENT (mA)
Figure 50. Load Regulation, Output
Voltage vs. Output Current
V
o
,
0
20
10
30
8.0
7.0
9.0
10.0
I
out
, POSITIVE DOUBLER OUTPUT CURRENT (mA)
Figure 51. Load Regulation, Output
Voltage vs. Output Current
V
o
,
0
30
20
10
50
R
1
= 10 k
R
2
= 20 k
T
A
= 25
°
C
40
Negative Inverter I
out
= 15 mA
Negative Inverter
Positive Doubler
I
out
= 15 mA
R
out
= 45 Open Loop
R
out
= 2 Closed Loop
R1 = 10 k, R2 = 20 k
T
A
= 25
°
C
Figure 52. Inverter Circuit Board Layout, Top View Copper Side
V
in
GND
IC1
C
1
Inverter Size = 0.5 in x 0.2 in
Area = 0.10 in
2
, 64.5 mm
2
V
out
GND
C
3
+
C
2
+
SHDN
+
0.5
″
TAPING FORM
PIN 1
USER DIRECTION OF FEED
Component Taping Orientation for TSOP6 Devices
Standard Reel Component Orientation
(Mark Right Side Up)
DEVICE
MARKING
TSOP6
Package
Tape Width (W)
Pitch (P)
Part Per Full Reel
Diameter
8 mm
4 mm
3000
7 inches
Tape & Reel Specifications Table
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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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