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参数资料
| 型号： | LM2661M/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 13/13页 |
| 文件大小： | 358K |
| 代理商： | LM2661M/NOPB |
Other Applications (Continued)
CASCADING DEVICES
Cascading the LM2660s (or LM2661s) is an easy way to
produce a greater negative voltage (as shown in Figure 5). If
n is the integer representing the number of devices cas-
caded, the unloaded output voltage V
out is (nVin). The
effective output resistance is equal to the weighted sum of
each individual device:
A three-stage cascade circuit shown in Figure 6 generates
3V
in, from Vin.
Cascading is also possible when devices are operating in
doubling mode. In Figure 7, two devices are cascaded to
generate 3V
in.
generating +15V or 15V from a +5V input.
Note that, the number of n is practically limited since the
increasing of n significantly reduces the efficiency and in-
creases the output resistance and output voltage ripple.
01291123
FIGURE 5. Increasing Output Voltage by Cascading Devices
01291124
FIGURE 6. Generating 3V
in from +Vin
LM2660/LM2661
www.national.com
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2661MX | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM2661MX/NOPB | 功能描述:IC REG MULTI CONFIG 0.1A 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR |
| LM2661MX_NOPB | 制造商:TI 制造商全称:Texas Instruments 功能描述:LM2660 Switched Capacitor Voltage Converter |
| LM2662 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| LM2662M | 功能描述:电荷泵 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 |
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