目录llG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） llG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llG嘉泰姆

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一,产品概述(General Description)      llG嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-upllG嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerllG嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanllG嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034llG嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagellG嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atllG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 andllG嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.llG嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectllG嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.llG嘉泰姆
二.产品特点(Features)llG嘉泰姆
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Input Voltage Operating Range: 0.85V to 5VllG嘉泰姆
Voltage Output Range: 2.5V to 5.5VllG嘉泰姆
Efficiency Up to 94%llG嘉泰姆
3.3V/100mA Output at 1.0V InputllG嘉泰姆
5V/700mA Output at 3.6V InputllG嘉泰姆
Low Start-up Voltage: 0.85V TypicalllG嘉泰姆
1.2MHz Constant Frequency OperationllG嘉泰姆
Internal Synchronous RectifierllG嘉泰姆
EMI Reduction Anti-Ring Control CircuitryllG嘉泰姆
Low Shutdown Current: < 1.0uAllG嘉泰姆
Over Current ProtectionllG嘉泰姆
Over Temperature ProtectionllG嘉泰姆
Light Load PFM Mode OperationllG嘉泰姆
SOT23-6 PackagellG嘉泰姆
三,应用范围 (Applications)llG嘉泰姆
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 Li-ion Battery ChargerllG嘉泰姆

 TYPICAL APPLICATIONS
USB AudiollG嘉泰姆
Wireless MousellG嘉泰姆
Digital Still CamerasllG嘉泰姆
MP3/MP4 PlayersllG嘉泰姆
Portable InstrumentsllG嘉泰姆
四.技术规格书下载（产品PDF）llG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！llG嘉泰姆

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五,产品封装图 (Package)llG嘉泰姆
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六.电路原理图llG嘉泰姆
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七,功能概述llG嘉泰姆
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1)General DescriptionllG嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.llG嘉泰姆
It utilizes internal MOSFET switches to achieve highllG嘉泰姆
efficiency over full load current range. It operates at allG嘉泰姆
fixed switching frequency of 1.2MHz, and uses thellG嘉泰姆
slope compensated peak current mode pulse widthllG嘉泰姆
modulation (PWM) architecture. The device canllG嘉泰姆
operate with an input voltage below 1V and thellG嘉泰姆
minimum start-up voltage is 0.85V.llG嘉泰姆
2) Current Mode Operation llG嘉泰姆
The CXSU63034 is based on a slope compensated peakllG嘉泰姆
current mode PWM control topology. It operates at allG嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachllG嘉泰姆
clock cycle, the main switch (NMOS) is turned on andllG嘉泰姆
the inductor current starts to ramp. After the maximumllG嘉泰姆
duty cycle or the sense current signal equals the errorllG嘉泰姆
amplifier output, the main switch is turned off and thellG嘉泰姆
synchronous switch (PMOS) is turned on. This controlllG嘉泰姆
topology features cycle-by-cycle current limiting whichllG嘉泰姆
can prevent the main switch from overstress and thellG嘉泰姆
external inductor from saturating.llG嘉泰姆
3) Synchronous Rectification llG嘉泰姆
The CXSU63034 integrates a synchronous rectifier tollG嘉泰姆
improve efficiency as well as to eliminate the need forllG嘉泰姆
an external Schottky diode. The synchronous rectifier isllG嘉泰姆
used to reduce the loss condition contributed by thellG嘉泰姆
forward voltage of an external Schottky diode. ThellG嘉泰姆
synchronous rectifier is realized by a P-channel MOSllG嘉泰姆
(PMOS) with gate control circuitry that incorporatesllG嘉泰姆
八,相关芯片选择指南           更多同类产品........    llG嘉泰姆

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