Datasheet > ADM660ARU-REEL7

ADM660ARU-REEL7

更新时间： 2024-02-05 08:06:26

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管
页数	文件大小	规格书
11页	191K
描述
CMOS Switched-Capacitor Voltage Converter

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中文翻译

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技术参数
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ADM660ARU-REEL7 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	TSSOP,	针数：	16
Reach Compliance Code：	unknown	风险等级：	5.32
模拟集成电路 - 其他类型：	SWITCHED CAPACITOR CONVERTER	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-G16	JESD-609代码：	e0
长度：	5 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	16
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	240	座面最大高度：	1.2 mm
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：	TIN LEAD
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	4.4 mm

ADM660ARU-REEL7 数据手册

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/f_C

term. This explains why the output impedance is higher for

smaller capacitance values. At high oscillator frequencies, the

1/f_Cterm 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.

0.1

100

OSCILLATOR FREQUENCY – kHz

Figure 9. Output Impedance vs. Oscillator Frequency

REV.

–9–

1...6 7 8910 11

中文翻译

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与ADM660ARU-REEL7相关器件

型号	品牌	获取价格	描述	数据表
ADM660ARUZ	ADI	获取价格	CMOS Switched-Capacitor Voltage Converters
ADM660ARUZ-REEL	ADI	获取价格	CMOS Switched-Capacitor Voltage Converters
ADM660ARUZ-REEL7	ADI	获取价格	CMOS Switched-Capacitor Voltage Converters
ADM660ARZ	ADI	获取价格	CMOS Switched-Capacitor Voltage Converters
ADM660ARZ-REEL	ADI	获取价格	CMOS Switched-Capacitor Voltage Converters
ADM660ARZ-REEL7	ADI	获取价格	CMOS Switched-Capacitor Voltage Converters
ADM663	ADI	获取价格	Tri-Mode: +3.3 V, +5 V, Adjustable Micropower Linear Voltage Regulators
ADM663A	ADI	获取价格	Tri-Mode: +3.3 V, +5 V, Adjustable Micropower Linear Voltage Regulators
ADM663AAN	ADI	获取价格	Tri-Mode: +3.3 V, +5 V, Adjustable Micropower Linear Voltage Regulators
ADM663AAR	ADI	获取价格	Tri-Mode: +3.3 V, +5 V, Adjustable Micropower Linear Voltage Regulators

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