CXSU6338B step-up converter that provides a boosted output voltage from a low voltage source. Because of its proprietary design, it starts up at a very low input voltage down to 850mV

发布时间:2020-04-06 09:43:38 浏览次数:715 作者:嘉泰姆 来源:1
摘要:CXSU6338B step-up converter that provides a boosted output voltage from a low voltage source. Because of its proprietary design, it starts up at a very low input voltage down to 850mV

目录88A嘉泰姆

1.产品概述       2.产品特点     3.应用范围      4.技术规格书下载(产品PDF文档) 
5.
产品封装图</span>   6.电路原理图</span>  7.功能概述      8.
相关产品88A嘉泰姆


,产品概述(General Description)      
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    The CXSU6338B is a step-up converter that provides a boosted output voltage from a low voltage source.88A嘉泰姆

Because of its proprietary design, it starts up at a very low input voltage down to 850mV, making it88A嘉泰姆

an ideal choice for single cell alkaline/NiMH battery operations.88A嘉泰姆

   A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profile88A嘉泰姆

inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing88A嘉泰姆

external parts count.88A嘉泰姆

     CXSU6338B is housed in a tiny SOT23-5 and SOT89-3 Package.88A嘉泰姆

二</span>.产品特点(Features)
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Up to 95% Efficiency88A嘉泰姆

Output voltage accuracy 3%</span>88A嘉泰姆

1MHz Switching Frequency allows small inductor88A嘉泰姆

and output cap88A嘉泰姆

Input boost-strapping allows using small or no88A嘉泰姆

input cap88A嘉泰姆

Low Vin Start-up Voltage down to 850mV Ideal88A嘉泰姆

for Single Alkaline Cell operations88A嘉泰姆

Maximum Output Current up to 300mA88A嘉泰姆

Low Noise PWM control88A嘉泰姆

Internally Compensated Current Mode Control88A嘉泰姆

Internal Synchronous Rectifier88A嘉泰姆

Logic Control Shutdown (IQ<1uA)88A嘉泰姆

三</span>,应用范围 (Applications)
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One to Three Cell Battery Operated Devices88A嘉泰姆

Medical Instruments88A嘉泰姆

Bluetooth Headsets88A嘉泰姆

Flash-Based MP3 Players88A嘉泰姆

Noise Canceling Headphones88A嘉泰姆

四.技术规格书下载(产品PDF)</span>
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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</span>!</p>

 QQ截图20160419174301.jpg88A嘉泰姆

五,产品封装图 (Package)
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blob.png88A嘉泰姆

六.电路原理图</span>
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blob.png88A嘉泰姆

七</span>,功能概述
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Parameters88A嘉泰姆

Condition88A嘉泰姆

Min.88A嘉泰姆

Typ.88A嘉泰姆

Max.88A嘉泰姆

Unit88A嘉泰姆

Minimum Input   Voltage88A嘉泰姆



0.788A嘉泰姆


V88A嘉泰姆

Startup Voltage88A嘉泰姆



0.8588A嘉泰姆

1.188A嘉泰姆

V88A嘉泰姆

Dropout Voltage,   Vout≥2.8V88A嘉泰姆

FB=OUT88A嘉泰姆


3.388A嘉泰姆


V88A嘉泰姆

FB=G88A嘉泰姆


588A嘉泰姆


V88A嘉泰姆

FB Feedback   Voltage88A嘉泰姆

Vout=2.5 to 5V88A嘉泰姆


0.688A嘉泰姆


V88A嘉泰姆

FB Input Current88A嘉泰姆




5088A嘉泰姆

nA88A嘉泰姆

Output Voltage   Range88A嘉泰姆

External divider88A嘉泰姆

2.588A嘉泰姆


588A嘉泰姆

V88A嘉泰姆

Quiescent Current   at OUT88A嘉泰姆

Vfb=0.7V88A嘉泰姆


2588A嘉泰姆


uA88A嘉泰姆

Shutdown Supply   Current at OUT88A嘉泰姆

EN=G88A嘉泰姆


0.188A嘉泰姆

188A嘉泰姆

uA88A嘉泰姆

NMOS Switch On   Resistance88A嘉泰姆

Isw=100mA88A嘉泰姆


0.388A嘉泰姆


ohm88A嘉泰姆

PMOS Switch On   Resistance88A嘉泰姆

Isw=100mA88A嘉泰姆


0.788A嘉泰姆


ohm88A嘉泰姆

NMOS Switch   Current Limit88A嘉泰姆


188A嘉泰姆



A88A嘉泰姆

SW Leakage   Current88A嘉泰姆

Vout=5.5V, Vsw=0   or 5.5V,88A嘉泰姆

EN=G88A嘉泰姆



188A嘉泰姆

uA88A嘉泰姆

EN Input Current88A嘉泰姆




188A嘉泰姆

uA88A嘉泰姆

EN Input Voltage   for “</span>Low”</span>88A嘉泰姆




0.388A嘉泰姆

V88A嘉泰姆

EN Input Voltage   for “</span>High”</span>88A嘉泰姆


0.688A嘉泰姆



V88A嘉泰姆

八,相关芯片选择指南
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升压型<span style="">DC/DC转换器</span>(DC/DC Step-up Converter )
Part No.MODEVINVOUTIQFOSCEff.Accu.Power switchingIOUTPackage
CXSU6337PFM0.8~5.5V2.5~6V 100mV Step4μA450KHz85%±2%Internal MOSFET300mASOT89-3 SOT23-3 SOT23-5
CXSU6337CPFM0.8~5.5V2.5~6V 100mV Step6μA400KHz90%±2%External MOSFET-SOT89-5 SOT23-3 SOT23-5
CXSU6338BSync Boost PFM/PWM0.85~5V3.3, 5V, ADJ25μA1MHz95%±2%Internal Sync Rectifier300mASOT23-5
CXSU6339Sync Boost PWM0.9~5V1.8~3.6V8μA1MHz94%±2%Internal Sync   Rectifier300mASOT89-3 SOT23-3 SOT23-5
CXSU6340Sync Boost PWM0.9~5V1.8~3.6V8μA1MHz94%±2%Internal Sync Rectifier300mASOT89-3 SOT23-3 SOT23-5

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