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参数资料
| 型号： | TC7660IJA |
| 厂商： | Microchip Technology |
| 文件页数： | 9/20页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHD CAP INV ADJ 8CDIP |
| 标准包装： | 56 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -1.5 V ~ -10 V |
| 输入电压： | 1.5 V ~ 10 V |
| 频率 - 开关： | 10kHz |
| 电流 - 输出： | 20mA |
| 同步整流器： | 无 |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-CDIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 供应商设备封装： | 8-CERDIP |
| 其它名称： | 158-1065 158-1065-ND |
TC7660
V +
1
8
V OUT
= -V +
2
3
TC7660
7
6
D 1
+
C 3
+
C 1
4
+
C 2
5
V OUT =
D 2 (2 V + ) - (2 V F )
+
C 4
FIGURE 5-7: Combined Negative
Converter a nd 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.
(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 (D 1 and D 2 in Figure 5-7 would never turn on), or
can be used to “force” the internal regulator on.
V OUT = -V -
C 1
10 μF
+
1
2
3
TC7660
8
7
6
1 M ?
+
10 μF
4
5
V - input
FIGURE 5-8:
Conversion.
Positive Voltage
? 2002-2011 Microchip Technology Inc.
DS21465C-page 9
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