200mA电荷泵电压逆变器1.4V到5.5V输入电压CXUS65140两个或三个镍镉电池镍氢电池或碱性电池锂离子电池反向输入电源电压

CXUS65140从1.4V到5.5V的输入电压产生不受调节的负输出电压。该设备通常由5V或3.3V的预调节供电轨供电。由于其输入电压范围宽，两个或三个镍镉电池、镍氢电池或碱性电池以及一个锂离子电池也可以为其供电。
一个完整的DC/DC电荷泵逆变器只需要三个外部电容。整个转换器组装在一个小包装内，可以建造在一个50平方米的板上。通过用集成电路将启动时通常需要的肖特基二极管替换为负载，可以实现额外的板面积和组件数量减少。
该CXUS15140可以提供最大输出电流为200毫安，具有典型的转换效率大于80%，在宽的输出电流范围。
CXUS65140在SOT-23-6软件包中提供。它在-40℃到+85℃的环境温度范围内工作。

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXUS65140 generates an unregulated negative output voltage from an input voltage ranging from 1.4V to 5.5V. The device is typically supplied by a pre-regulated supply rail of 5V or 3.3V. Due to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-ion cell can also power them.

Only three external capacitors are required to build a complete DC/DC charge pump inverter. Assembled in a small package, the complete converter can be built on a 50mm² board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.

The CXUS65140 can deliver a maximum output current of 200mA with a typical conversion efficiency of greater than 80% over a wide output current range.

The CXUS65140 is available in SOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.

   产品特点 返回TOP

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• Inverts Input Supply Voltage
• Up to 200mA Output Current
• Input Voltage Range from 1.4V to 5.5V
• Quiescent Current: 1.5mA (TYP)
• 950kHz Switching Frequency
• Integrated Active Schottky Diode for Start-Up into  Load
• -40℃ to +85℃ Operating Temperature Range
• Available in Green SOT-23-6 Package

   应用范围 返回TOP

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LCD Bias
GaAs Bias for RF Power Amps
Sensor Supply in Portable Instruments
Bipolar Amplifier Supply

   技术规格书（产品PDF) 返回TOP 

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     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！

 

产品封装图 返回TOP

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电路原理图 返回TOP

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电荷泵DC/DC转换器
Product	CH	Enable	VCC(Min) (V)	VCC(Max) (V)	VOUT(V)	IOUT (mA)	Frequency (kHz)	Iq(mA)	SHDN Iq (μA)	Package
CXUS65138	1	Y	2.7	5	5	100	750	60	1	SOT-23-6
CXUS65139	2	Y	2.7	5	5	500	1700	70	2	TDFN-3x3-8L
CXUS65140	1	Y	1.4	5.5	-VIN	200	950	1500	1	SOT-23-6
CXUS65141	1	N	1.4	5.5	-VIN	60	47	115	NA	SOT-23-5