參數(shù)資料
型號(hào): TC7660HCOA
廠商: Microchip Technology Inc.
元件分類(lèi): 通用總線(xiàn)功能
英文描述: IC-CMOS- BINARY COUNTER
中文描述: 高頻7660型DC - DC電壓轉(zhuǎn)換器
文件頁(yè)數(shù): 9/9頁(yè)
文件大小: 131K
代理商: TC7660HCOA
4-59
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
TC7660
CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
1
2
3
4
8
7
6
5
+
VOUT = –V–
10μF
+
1 M
V– INPUT
C1
10μF
TC7660
+
RL1
RL2
VOUT =
V+–V–
2
50 μF
100 k
50 μF
V+
V–
50 μF
+
1 M
1
2
8
7
TC7660
3
4
6
5
+
Voltage Splitting
The same bidirectional characteristics used in Figure 10
can also be used to split a higher supply in half, as shown in
Figure 11. The combined load will be evenly shared be-
tween the two sides. Once again, a high value resistor to the
LV pin ensures start-up. Because the switches share the
load in parallel, the output impedance is much lower than in
the standard circuits, and higher currents can be drawn from
the device. By using this circuit, and then the circuit of Figure
5, +15V can be converted (via +7.5V and –7.5V) to a nominal
–15V, though with rather high series resistance (~250
).
Figure 10. Positive Voltage Conversion
Figure 11. Splitting a Supply in Half
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