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目录Pt5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） Pt5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Pt5嘉泰姆

 Pt5嘉泰姆

一,产品概述(General Description)      Pt5嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-upPt5嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerPt5嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanPt5嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034Pt5嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagePt5嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atPt5嘉泰姆
light loads, further extend battery life. Switching frequency is internally set at 1.2MHz, design for use of small value surface mount inductor, input andPt5嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.Pt5嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectPt5嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.Pt5嘉泰姆
二.产品特点(Features)Pt5嘉泰姆
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Input Voltage Operating Range: 0.85V to 5VPt5嘉泰姆
Voltage Output Range: 2.5V to 5.5VPt5嘉泰姆
Efficiency Up to 94%Pt5嘉泰姆
3.3V/100mA Output at 1.0V InputPt5嘉泰姆
5V/700mA Output at 3.6V InputPt5嘉泰姆
Low Start-up Voltage: 0.85V TypicalPt5嘉泰姆
1.2MHz Constant Frequency OperationPt5嘉泰姆
Internal Synchronous RectifierPt5嘉泰姆
EMI Reduction Anti-Ring Control CircuitryPt5嘉泰姆
Low Shutdown Current: < 1.0uAPt5嘉泰姆
Over Current ProtectionPt5嘉泰姆
Over Temperature ProtectionPt5嘉泰姆
Light Load PFM Mode OperationPt5嘉泰姆
SOT23-6 PackagePt5嘉泰姆
三,应用范围 (Applications)Pt5嘉泰姆
Pt5嘉泰姆

 Li-ion Battery ChargerPt5嘉泰姆

 TYPICAL APPLICATIONS
USB AudioPt5嘉泰姆
Wireless MousePt5嘉泰姆
Digital Still CamerasPt5嘉泰姆
MP3/MP4 PlayersPt5嘉泰姆
Portable InstrumentsPt5嘉泰姆
四.技术规格书下载（产品PDF）Pt5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！Pt5嘉泰姆

 Pt5嘉泰姆

五,产品封装图 (Package)Pt5嘉泰姆
Pt5嘉泰姆
Pt5嘉泰姆

六.电路原理图Pt5嘉泰姆
Pt5嘉泰姆
Pt5嘉泰姆
七,功能概述Pt5嘉泰姆
Pt5嘉泰姆
1)General DescriptionPt5嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.Pt5嘉泰姆
It utilizes internal MOSFET switches to achieve highPt5嘉泰姆
efficiency over full load current range. It operates at aPt5嘉泰姆
fixed switching frequency of 1.2MHz, and uses thePt5嘉泰姆
slope compensated peak current mode pulse widthPt5嘉泰姆
modulation (PWM) architecture. The device canPt5嘉泰姆
operate with an input voltage below 1V and thePt5嘉泰姆
minimum start-up voltage is 0.85V.Pt5嘉泰姆
2) Current Mode Operation Pt5嘉泰姆
The CXSU63034 is based on a slope compensated peakPt5嘉泰姆
current mode PWM control topology. It operates at aPt5嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachPt5嘉泰姆
clock cycle, the main switch (NMOS) is turned on andPt5嘉泰姆
the inductor current starts to ramp. After the maximumPt5嘉泰姆
duty cycle or the sense current signal equals the errorPt5嘉泰姆
amplifier output, the main switch is turned off and thePt5嘉泰姆
synchronous switch (PMOS) is turned on. This controlPt5嘉泰姆
topology features cycle-by-cycle current limiting whichPt5嘉泰姆
can prevent the main switch from overstress and thePt5嘉泰姆
external inductor from saturating.Pt5嘉泰姆
3) Synchronous Rectification Pt5嘉泰姆
The CXSU63034 integrates a synchronous rectifier toPt5嘉泰姆
improve efficiency as well as to eliminate the need forPt5嘉泰姆
an external Schottky diode. The synchronous rectifier isPt5嘉泰姆
used to reduce the loss condition contributed by thePt5嘉泰姆
forward voltage of an external Schottky diode. ThePt5嘉泰姆
synchronous rectifier is realized by a P-channel MOSPt5嘉泰姆
(PMOS) with gate control circuitry that incorporatesPt5嘉泰姆
八,相关芯片选择指南           更多同类产品........    Pt5嘉泰姆

Pt5嘉泰姆

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