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参数资料
| 型号： | ICL7660ISA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG 20MA 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 切换式电容器（充电泵），分配器，倍增器，反相 |
| 输出数： | 1 |
| 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： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-SOIC |
MAX1044/ICL7660
Switched-Capacitor Voltage Converters
V+
V+
1
8
1
8
V OUT = -(V+)
C1
10μF
2
3
MAX1044
ICL7660
7
6
C1
2
3
MAX1044
ICL7660
LV
7
6
C3
4
LV
5
4
5
V OUT = 2(V+) - 2V D
V OUT = V+
1
2
C2
10μF
C2
C4
Figure 10. Voltage Divider
Positive Voltage Doubler
Figure 9 illustrates the recommended voltage doubler
circuit for the MAX1044/ICL7660. To reduce the voltage
drops contributed by the diodes (V D ), use Schottky
diodes. For true voltage doubling or higher output cur-
rents, use the MAX660.
Voltage Divider
The voltage divider shown in Figure 10 splits the power
supply in half. A third capacitor can be added between
V+ and V OUT .
Combined Positive Multiplication and
Negative Voltage Conversion
Figure 11 illustrates this dual-function circuit.
Capacitors C1 and C3 perform the bucket and reser-
voir functions for generating the negative voltage.
Capacitors C2 and C4 are the bucket and reservoir
Figure 11. Combined Positive and Negative Converter
capacitors for the doubled positive voltage. This circuit
has higher output impedances resulting from the use of
a common charge-pump driver.
Cascading Devices
Larger negative multiples of the supply voltage can be
obtained by cascading MAX1044/ICL7660 devices
(Figure 12). The output voltage is nominally V OUT = -n(V+)
where n is the number of devices cascaded. The out-
put voltage is reduced slightly by the output resistance
of the first device, multiplied by the quiescent current of
the second, etc. Three or more devices can be cascaded
in this way, but output impedance rises dramatically.
For example, the output resistance of two cascaded
MAX1044s is approximately five times the output resis-
tance of a single voltage converter. A better solution
may be an inductive switching regulator, such as the
MAX755, MAX759, MAX764, or MAX774.
1
8
V+
1
8
1
8
2
MAX1044
7
2
MAX1044
7
2
MAX1044
7
10μF
3
4
ICL7660
1
6
5
10μF
3
4
ICL7660
2
6
5
10μF
3
4
ICL7660
3
6
5
V OUT = -n(V+)
10μF
Figure 12. Cascading MAX1044/ICL7660 for Increased Output Voltage
10
10μF
10μF
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICL7660ISA+ | 功能描述:电荷泵 Switched-Capacitor Voltage Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| ICL7660ISA+T | 功能描述:电荷泵 Switched-Capacitor Voltage Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| ICL7660ISA-T | 功能描述:电荷泵 Switched-Capacitor Voltage Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| ICL7660ISA-TG074 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| ICL7660MSA/PR | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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