目录Bjq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） Bjq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Bjq嘉泰姆

 Bjq嘉泰姆

一,产品概述(General Description)      Bjq嘉泰姆
Bjq嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upBjq嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerBjq嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanBjq嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034Bjq嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageBjq嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atBjq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 andBjq嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.Bjq嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectBjq嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.Bjq嘉泰姆
二.产品特点(Features)Bjq嘉泰姆
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Input Voltage Operating Range: 0.85V to 5VBjq嘉泰姆
Voltage Output Range: 2.5V to 5.5VBjq嘉泰姆
Efficiency Up to 94%Bjq嘉泰姆
3.3V/100mA Output at 1.0V InputBjq嘉泰姆
5V/700mA Output at 3.6V InputBjq嘉泰姆
Low Start-up Voltage: 0.85V TypicalBjq嘉泰姆
1.2MHz Constant Frequency OperationBjq嘉泰姆
Internal Synchronous RectifierBjq嘉泰姆
EMI Reduction Anti-Ring Control CircuitryBjq嘉泰姆
Low Shutdown Current: < 1.0uABjq嘉泰姆
Over Current ProtectionBjq嘉泰姆
Over Temperature ProtectionBjq嘉泰姆
Light Load PFM Mode OperationBjq嘉泰姆
SOT23-6 PackageBjq嘉泰姆
三,应用范围 (Applications)Bjq嘉泰姆
Bjq嘉泰姆

 Li-ion Battery ChargerBjq嘉泰姆

 TYPICAL APPLICATIONS
USB AudioBjq嘉泰姆
Wireless MouseBjq嘉泰姆
Digital Still CamerasBjq嘉泰姆
MP3/MP4 PlayersBjq嘉泰姆
Portable InstrumentsBjq嘉泰姆
四.技术规格书下载（产品PDF）Bjq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！Bjq嘉泰姆

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五,产品封装图 (Package)Bjq嘉泰姆
Bjq嘉泰姆
Bjq嘉泰姆

六.电路原理图Bjq嘉泰姆
Bjq嘉泰姆
Bjq嘉泰姆
七,功能概述Bjq嘉泰姆
Bjq嘉泰姆
1)General DescriptionBjq嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.Bjq嘉泰姆
It utilizes internal MOSFET switches to achieve highBjq嘉泰姆
efficiency over full load current range. It operates at aBjq嘉泰姆
fixed switching frequency of 1.2MHz, and uses theBjq嘉泰姆
slope compensated peak current mode pulse widthBjq嘉泰姆
modulation (PWM) architecture. The device canBjq嘉泰姆
operate with an input voltage below 1V and theBjq嘉泰姆
minimum start-up voltage is 0.85V.Bjq嘉泰姆
2) Current Mode Operation Bjq嘉泰姆
The CXSU63034 is based on a slope compensated peakBjq嘉泰姆
current mode PWM control topology. It operates at aBjq嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachBjq嘉泰姆
clock cycle, the main switch (NMOS) is turned on andBjq嘉泰姆
the inductor current starts to ramp. After the maximumBjq嘉泰姆
duty cycle or the sense current signal equals the errorBjq嘉泰姆
amplifier output, the main switch is turned off and theBjq嘉泰姆
synchronous switch (PMOS) is turned on. This controlBjq嘉泰姆
topology features cycle-by-cycle current limiting whichBjq嘉泰姆
can prevent the main switch from overstress and theBjq嘉泰姆
external inductor from saturating.Bjq嘉泰姆
3) Synchronous Rectification Bjq嘉泰姆
The CXSU63034 integrates a synchronous rectifier toBjq嘉泰姆
improve efficiency as well as to eliminate the need forBjq嘉泰姆
an external Schottky diode. The synchronous rectifier isBjq嘉泰姆
used to reduce the loss condition contributed by theBjq嘉泰姆
forward voltage of an external Schottky diode. TheBjq嘉泰姆
synchronous rectifier is realized by a P-channel MOSBjq嘉泰姆
(PMOS) with gate control circuitry that incorporatesBjq嘉泰姆
八,相关芯片选择指南           更多同类产品........    Bjq嘉泰姆

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