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ADM660ARUZ-REEL

更新时间： 2024-01-14 13:55:18
品牌 Logo 应用领域
亚德诺 - ADI 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
11页 179K
描述
CMOS Switched-Capacitor Voltage Converters

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中文翻译

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ADM660ARUZ-REEL 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Active零件包装代码：SOIC
包装说明：ROHS COMPLIANT, MS-012AA, SOIC-8针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：0.84
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHED CAPACITOR CONVERTER
控制模式：VOLTAGE-MODE最大输入电压：7 V
最小输入电压：1.5 V标称输入电压：5 V
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.1 A封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm子类别：Other Analog ICs
表面贴装：YES切换器配置：DOUBLER INVERTER
最大切换频率：120 kHz技术：CMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.9 mmBase Number Matches：1

ADM660ARUZ-REEL 数据手册

 浏览型号ADM660ARUZ-REEL的Datasheet PDF文件第5页浏览型号ADM660ARUZ-REEL的Datasheet PDF文件第6页浏览型号ADM660ARUZ-REEL的Datasheet PDF文件第7页浏览型号ADM660ARUZ-REEL的Datasheet PDF文件第8页浏览型号ADM660ARUZ-REEL的Datasheet PDF文件第10页浏览型号ADM660ARUZ-REEL的Datasheet PDF文件第11页 
ADM660/ADM8660  
current levels. The ADM660/ADM8660 is tested using low  
ESR, 10 µF, capacitors for both C1 and C2. Smaller values of  
C1 increase the output resistance, while increasing C1 will  
reduce the output resistance. The output resistance is also depen-  
dent on the internal switches on resistance as well as the  
capacitors ESR, so the effect of increasing C1 becomes negligible  
past a certain point.  
Capacitor C2  
The output capacitor size C2 affects the output ripple. Increas-  
ing the capacitor size reduces the peak-to-peak ripple. The ESR  
affects both the output impedance and the output ripple.  
Reducing the ESR reduces the output impedance and ripple.  
For convenience it is recommended that both C1 and C2 be the  
same value.  
Figure 9 shows how the output resistance varies with oscillator  
frequency for three different capacitor values. At low oscillator  
frequencies, the output impedance is dominated by the 1/fC  
term. This explains why the output impedance is higher for  
smaller capacitance values. At high oscillator frequencies, the  
1/fC term becomes insignificant and the output impedance is  
dominated by the internal switches on resistance. From an out-  
put impedance viewpoint, therefore, there is no benefit to be  
gained from using excessively large capacitors.  
Table III. Capacitor Selection  
Charge-Pump  
Frequency  
Capacitor  
C1, C2  
25 kHz  
120 kHz  
10 µF  
2.2 µF  
Power Efficiency and Oscillator Frequency Trade-Off  
While higher switching frequencies allow smaller capacitors to  
be used for equivalent performance, or improved performance  
with the same capacitors, there is a trade-off to consider. As the  
oscillator frequency is increased, the quiescent current increases.  
This happens as a result of a finite charge being lost at each  
switching cycle. The charge loss per unit cycle at very high  
frequencies can be significant, thereby reducing the power effi-  
ciency. Since the power efficiency is also degraded at low oscillator  
frequencies due to an increase in output impedance, this means  
that there is an optimum frequency band for maximum power  
transfer. Refer to the Typical Performance Characteristics section.  
500  
C1 = C2 = 2.2␮F  
400  
300  
C1 = C2 = 1␮F  
200  
C1 = C2 = 10␮F  
Bypass Capacitor  
100  
The ac impedance of the ADM660/ADM8660 may be reduced  
by using a bypass capacitor on the input supply. This capacitor  
should be connected between the input supply and GND. It  
will provide instantaneous current surges as required. Suitable  
capacitors of 0.1 µF or greater may be used.  
0
0.1  
1
10  
100  
OSCILLATOR FREQUENCY – kHz  
Figure 9. Output Impedance vs. Oscillator Frequency  
C
REV.  
–9–  
1...67891011

中文翻译

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ADM660ARUZ-REEL 替代型号

型号 品牌 替代类型 描述 数据表
ADM660ARZ-REEL ADI

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