CXUS65141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。
CXUS15141可以提供60mA的最大输出电流，在宽的输出电流范围内具有大于85%的典型转换效率。固定开关频率为47kHz。
CXUS65141在SOT-23-5软件包中提供。它在-40℃到+85℃的环境温度范围内工作。
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产品概述 返回TOP
The CXUS65141 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 CXUS65141 can deliver a maximum output current of 60mA with a typical conversion efficiency of greater than 85% over a wide output current range. The fixed switching frequency is 47kHz.
The CXUS65141 is available in SOT-23-5 package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Inverts Input Supply Voltage
• Up to 60mA Output Current
• Input Voltage Range from 1.4V to 5.5V
• Quiescent Current: 115μA (TYP)
• Integrated Active Schottky Diode for Start-Up into Load
• -40℃ to +85℃ Operating Temperature Range
• Available in Green SOT-23-5 Package
应用范围 返回TOP
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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产品封装图 返回TOP
电路原理图 返回TOP
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电荷泵DC/DC转换器 |
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|
Product |
CH |
Enable |
VCC(Min) (V) |
VCC(Max) (V) |
VOUT(V) |
IOUT (mA) |
Frequency (kHz) |
Iq(mA) |
SHDN Iq (μA) |
Package |
|
1 |
Y |
2.7 |
5 |
5 |
100 |
750 |
60 |
1 |
SOT-23-6 |
|
|
2 |
Y |
2.7 |
5 |
5 |
500 |
1700 |
70 |
2 |
TDFN-3x3-8L |
|
|
1 |
Y |
1.4 |
5.5 |
-VIN |
200 |
950 |
1500 |
1 |
SOT-23-6 |
|
|
1 |
N |
1.4 |
5.5 |
-VIN |
60 |
47 |
115 |
NA |
SOT-23-5 |
|
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