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:2020-05-29
浏览次数:366

目录N9M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) N9M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N9M嘉泰姆

 N9M嘉泰姆

一,产品概述(General Description)      N9M嘉泰姆
直线N9M嘉泰姆
    The CXSU6338B is a step-up converter that provides a boosted output voltage from a low voltage source.N9M嘉泰姆

Because of its proprietary design, it starts up at a very low input voltage down to 850mV, making itN9M嘉泰姆

an ideal choice for single cell alkaline/NiMH battery operations.N9M嘉泰姆

   A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profileN9M嘉泰姆

inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducingN9M嘉泰姆

external parts count.N9M嘉泰姆

     CXSU6338B is housed in a tiny SOT23-5 and SOT89-3 Package.N9M嘉泰姆

二.产品特点(Features)N9M嘉泰姆
直线N9M嘉泰姆

Up to 95% EfficiencyN9M嘉泰姆

Output voltage accuracy 3%N9M嘉泰姆

1MHz Switching Frequency allows small inductorN9M嘉泰姆

and output capN9M嘉泰姆

Input boost-strapping allows using small or noN9M嘉泰姆

input capN9M嘉泰姆

Low Vin Start-up Voltage down to 850mV IdealN9M嘉泰姆

for Single Alkaline Cell operationsN9M嘉泰姆

Maximum Output Current up to 300mAN9M嘉泰姆

Low Noise PWM controlN9M嘉泰姆

Internally Compensated Current Mode ControlN9M嘉泰姆

Internal Synchronous RectifierN9M嘉泰姆

Logic Control Shutdown (IQ<1uA)N9M嘉泰姆

三,应用范围 (Applications)N9M嘉泰姆
直线N9M嘉泰姆

One to Three Cell Battery Operated DevicesN9M嘉泰姆

Medical InstrumentsN9M嘉泰姆

Bluetooth HeadsetsN9M嘉泰姆

Flash-Based MP3 PlayersN9M嘉泰姆

Noise Canceling HeadphonesN9M嘉泰姆

四.技术规格书下载(产品PDF)N9M嘉泰姆
直线N9M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N9M嘉泰姆

 QQ截图20160419174301.jpgN9M嘉泰姆

五,产品封装图 (Package)N9M嘉泰姆
直线N9M嘉泰姆
blob.pngN9M嘉泰姆

六.电路原理图N9M嘉泰姆
直线N9M嘉泰姆
blob.pngN9M嘉泰姆

七,功能概述N9M嘉泰姆
直线N9M嘉泰姆

ParametersN9M嘉泰姆

ConditionN9M嘉泰姆

Min.N9M嘉泰姆

Typ.N9M嘉泰姆

Max.N9M嘉泰姆

UnitN9M嘉泰姆

Minimum Input   VoltageN9M嘉泰姆

   

0.7N9M嘉泰姆

 

VN9M嘉泰姆

Startup VoltageN9M嘉泰姆

   

0.85N9M嘉泰姆

1.1N9M嘉泰姆

VN9M嘉泰姆

Dropout Voltage,   Vout≥2.8VN9M嘉泰姆

FB=OUTN9M嘉泰姆

 

3.3N9M嘉泰姆

 

VN9M嘉泰姆

FB=GN9M嘉泰姆

 

5N9M嘉泰姆

 

VN9M嘉泰姆

FB Feedback   VoltageN9M嘉泰姆

Vout=2.5 to 5VN9M嘉泰姆

 

0.6N9M嘉泰姆

 

VN9M嘉泰姆

FB Input CurrentN9M嘉泰姆

     

50N9M嘉泰姆

nAN9M嘉泰姆

Output Voltage   RangeN9M嘉泰姆

External dividerN9M嘉泰姆

2.5N9M嘉泰姆

 

5N9M嘉泰姆

VN9M嘉泰姆

Quiescent Current   at OUTN9M嘉泰姆

Vfb=0.7VN9M嘉泰姆

 

25N9M嘉泰姆

 

uAN9M嘉泰姆

Shutdown Supply   Current at OUTN9M嘉泰姆

EN=GN9M嘉泰姆

 

0.1N9M嘉泰姆

1N9M嘉泰姆

uAN9M嘉泰姆

NMOS Switch On   ResistanceN9M嘉泰姆

Isw=100mAN9M嘉泰姆

 

0.3N9M嘉泰姆

 

ohmN9M嘉泰姆

PMOS Switch On   ResistanceN9M嘉泰姆

Isw=100mAN9M嘉泰姆

 

0.7N9M嘉泰姆

 

ohmN9M嘉泰姆

NMOS Switch   Current LimitN9M嘉泰姆

 

1N9M嘉泰姆

   

AN9M嘉泰姆

SW Leakage   CurrentN9M嘉泰姆

Vout=5.5V, Vsw=0   or 5.5V,N9M嘉泰姆

EN=GN9M嘉泰姆

   

1N9M嘉泰姆

uAN9M嘉泰姆

EN Input CurrentN9M嘉泰姆

     

1N9M嘉泰姆

uAN9M嘉泰姆

EN Input Voltage   for “Low”N9M嘉泰姆

     

0.3N9M嘉泰姆

VN9M嘉泰姆

EN Input Voltage   for “High”N9M嘉泰姆

 

0.6N9M嘉泰姆

   

VN9M嘉泰姆

八,相关芯片选择指南N9M嘉泰姆
直线N9M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