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参数资料
| 型号： | ICL7660ISA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/13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
current is: I = f x Δ Q = f x C1(V+ - V OUT ). Rewriting this
equation in Ohm’s law form defines an equivalent resis-
tance synthesized by the switched-capacitor circuit
S1
S2
where:
V+
C1
I =
(V+ - V OUT )
1 / (f x C1)
and
S3
S4
C2
V OUT = -(V+)
R EQUIV =
1
f x C1
where f is one-half the oscillator frequency. This resis-
tance is a major component of the output impedance of
switched-capacitor circuits like the MAX1044/ICL7660.
As shown in Figure 4, the MAX1044/ICL7660 contain
MOSFET switches, the necessary transistor drive cir-
Figure 2. Ideal Voltage Inverter
f
cuitry, and a timing oscillator.
________________Design Information
The MAX1044/ICL7660 are designed to provide a
simple, compact, low-cost solution where negative or
doubled supply voltages are needed for a few low-
V+
V OUT
power components. Figure 5 shows the basic negative
voltage converter circuit. For many applications, only
two external capacitors are needed. The type of
capacitor used is not critical.
C1
C2
R LOAD
Proper Use of the Low-Voltage (LV) Pin
Figure 4 shows an internal voltage regulator inside the
MAX1044/ICL7660. Use the LV pin to bypass this
regulator, in order to improve low-voltage performance
Figure 3a. Switched Capacitor Model
R EQUIV
1M
V+
pin 8
S1
CAP+
pin 2
S2
V+
R EQUIV =
1
f × C1
V OUT
BOOST
pin 1
OSC
÷2
Q
Q
pin 7
C2
R LOAD
S3
S4
V OUT
pin 5
LV
pin 6
GND
pin 3
CAP-
pin 4
Figure 3b. Equivalent Circuit
6
Figure 4. MAX1044 and ICL7660 Functional Diagram
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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