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低压电源升压输出电压转换器CXSU6338B单碱性镍氢电池1MHz的开关频率效率高达95%输出电流300毫安同步整流器
发表时间:2020-06-02浏览次数:307
低压电源升压输出电压转换器CXSU6338B单碱性镍氢电池1MHz的开关频率效率高达95%输出电流300毫安同步整流器
 

目录IrH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) IrH嘉泰姆
5.产品封装图   6.电路原理图  7.功能概述      8.相关产品IrH嘉泰姆

 IrH嘉泰姆

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

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

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

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

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

external parts count.IrH嘉泰姆

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

二.产品特点(Features)IrH嘉泰姆
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Up to 95% EfficiencyIrH嘉泰姆

Output voltage accuracy 3%IrH嘉泰姆

1MHz Switching Frequency allows small inductorIrH嘉泰姆

and output capIrH嘉泰姆

Input boost-strapping allows using small or noIrH嘉泰姆

input capIrH嘉泰姆

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

for Single Alkaline Cell operationsIrH嘉泰姆

Maximum Output Current up to 300mAIrH嘉泰姆

Low Noise PWM controlIrH嘉泰姆

Internally Compensated Current Mode ControlIrH嘉泰姆

Internal Synchronous RectifierIrH嘉泰姆

Logic Control Shutdown (IQ<1uA)IrH嘉泰姆

三,应用范围 (Applications)IrH嘉泰姆
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One to Three Cell Battery Operated DevicesIrH嘉泰姆

Medical InstrumentsIrH嘉泰姆

Bluetooth HeadsetsIrH嘉泰姆

Flash-Based MP3 PlayersIrH嘉泰姆

Noise Canceling HeadphonesIrH嘉泰姆

四.技术规格书下载(产品PDF)IrH嘉泰姆
直线IrH嘉泰姆

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IrH嘉泰姆

 QQ截图20160419174301.jpgIrH嘉泰姆

五,产品封装图 (Package)IrH嘉泰姆
直线IrH嘉泰姆
blob.pngIrH嘉泰姆

六.电路原理图IrH嘉泰姆
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blob.pngIrH嘉泰姆

七,功能概述IrH嘉泰姆
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ParametersIrH嘉泰姆

ConditionIrH嘉泰姆

Min.IrH嘉泰姆

Typ.IrH嘉泰姆

Max.IrH嘉泰姆

UnitIrH嘉泰姆

Minimum Input   VoltageIrH嘉泰姆

   

0.7IrH嘉泰姆

 

VIrH嘉泰姆

Startup VoltageIrH嘉泰姆

   

0.85IrH嘉泰姆

1.1IrH嘉泰姆

VIrH嘉泰姆

Dropout Voltage,   Vout≥2.8VIrH嘉泰姆

FB=OUTIrH嘉泰姆

 

3.3IrH嘉泰姆

 

VIrH嘉泰姆

FB=GIrH嘉泰姆

 

5IrH嘉泰姆

 

VIrH嘉泰姆

FB Feedback   VoltageIrH嘉泰姆

Vout=2.5 to 5VIrH嘉泰姆

 

0.6IrH嘉泰姆

 

VIrH嘉泰姆

FB Input CurrentIrH嘉泰姆

     

50IrH嘉泰姆

nAIrH嘉泰姆

Output Voltage   RangeIrH嘉泰姆

External dividerIrH嘉泰姆

2.5IrH嘉泰姆

 

5IrH嘉泰姆

VIrH嘉泰姆

Quiescent Current   at OUTIrH嘉泰姆

Vfb=0.7VIrH嘉泰姆

 

25IrH嘉泰姆

 

uAIrH嘉泰姆

Shutdown Supply   Current at OUTIrH嘉泰姆

EN=GIrH嘉泰姆

 

0.1IrH嘉泰姆

1IrH嘉泰姆

uAIrH嘉泰姆

NMOS Switch On   ResistanceIrH嘉泰姆

Isw=100mAIrH嘉泰姆

 

0.3IrH嘉泰姆

 

ohmIrH嘉泰姆

PMOS Switch On   ResistanceIrH嘉泰姆

Isw=100mAIrH嘉泰姆

 

0.7IrH嘉泰姆

 

ohmIrH嘉泰姆

NMOS Switch   Current LimitIrH嘉泰姆

 

1IrH嘉泰姆

   

AIrH嘉泰姆

SW Leakage   CurrentIrH嘉泰姆

Vout=5.5V, Vsw=0   or 5.5V,IrH嘉泰姆

EN=GIrH嘉泰姆

   

1IrH嘉泰姆

uAIrH嘉泰姆

EN Input CurrentIrH嘉泰姆

     

1IrH嘉泰姆

uAIrH嘉泰姆

EN Input Voltage   for “Low”IrH嘉泰姆

     

0.3IrH嘉泰姆

VIrH嘉泰姆

EN Input Voltage   for “High”IrH嘉泰姆

 

0.6IrH嘉泰姆

   

VIrH嘉泰姆

八,相关芯片选择指南IrH嘉泰姆
直线IrH嘉泰姆

升压型DC/DC转换器(DC/DC Step-up Converter )
Part No. MODE VIN VOUT IQ FOSC Eff. Accu. Power switching IOUT Package
CXSU6337 PFM 0.8~5.5V 2.5~6V 100mV Step 4μA 450KHz 85% ±2% Internal MOSFET 300mA SOT89-3 SOT23-3 SOT23-5
CXSU6337C PFM 0.8~5.5V 2.5~6V 100mV Step 6μA 400KHz 90% ±2% External MOSFET - SOT89-5 SOT23-3 SOT23-5
CXSU6338B Sync Boost PFM/PWM 0.85~5V 3.3, 5V, ADJ 25μA 1MHz 95% ±2% Internal Sync Rectifier 300mA SOT23-5
CXSU6339 Sync Boost PWM 0.9~5V 1.8~3.6V 8μA 1MHz 94% ±2% Internal Sync   Rectifier 300mA SOT89-3 SOT23-3 SOT23-5
CXSU6340 Sync Boost PWM 0.9~5V 1.8~3.6V 8μA 1MHz 94% ±2% Internal Sync Rectifier 300mA SOT89-3 SOT23-3 SOT23-5

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