參數(shù)資料
型號： TC7660MJAG
元件分類： 穩(wěn)壓器
英文描述： SWITCHED CAPACITOR REGULATOR, 10 kHz SWITCHING FREQ-MAX, CDIP8
封裝： CERDIP-8
文件頁數(shù)： 18/18頁
文件大?。?/td> 396K
代理商： TC7660MJAG
2002 Microchip Technology Inc.
DS21465B-page 9
TC7660
FIGURE 5-7:
Combined Negative
Converter And Positive Multiplier.
5.7
Efficient Positive Voltage
Multiplication/Conversion
Since the switches that allow the charge pumping
operation are bidirectional, the charge transfer can be
performed
backwards
as
easily
as
forwards.
Figure 5-8 shows a TC7660 transforming -5V to +5V
(or +5V to +10V, etc.). The only problem here is that the
internal clock and switch-drive section will not operate
until some positive voltage has been generated. An ini-
tial inefficient pump, as shown in Figure 5-7, could be
used to start this circuit up, after which it will bypass the
other (D1 and D2 in Figure 5-7 would never turn on), or
else the diode and resistor shown dotted in Figure 5-8
can be used to "force" the internal regulator on.
FIGURE 5-8:
Positive Voltage
Conversion.
+
C1
D1
+
C3
C4
C2
D2
+
VOUT =
1
2
3
4
8
7
6
5
TC7660
V+
(2 V+) - (2 VF)
VOUT
= -V+
VOUT = -V
-
+
1M
V - input
+
1
2
3
4
8
7
6
5
TC7660
10 F
C1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC7660MOA 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Charge Pump DC-to-DC Voltage Converter
TC7660MOA713 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Charge Pump DC-to-DC Voltage Converter
TC7660MPA 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Charge Pump DC-to-DC Voltage Converter
TC7660S 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:SUPER CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER
TC7660SCOA 功能描述:電荷泵 High 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
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