目录Jgm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） Jgm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Jgm嘉泰姆

 Jgm嘉泰姆

一,产品概述(General Description)      Jgm嘉泰姆
Jgm嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upJgm嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerJgm嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanJgm嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034Jgm嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageJgm嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atJgm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 andJgm嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.Jgm嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectJgm嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.Jgm嘉泰姆
二.产品特点(Features)Jgm嘉泰姆
Jgm嘉泰姆
Input Voltage Operating Range: 0.85V to 5VJgm嘉泰姆
Voltage Output Range: 2.5V to 5.5VJgm嘉泰姆
Efficiency Up to 94%Jgm嘉泰姆
3.3V/100mA Output at 1.0V InputJgm嘉泰姆
5V/700mA Output at 3.6V InputJgm嘉泰姆
Low Start-up Voltage: 0.85V TypicalJgm嘉泰姆
1.2MHz Constant Frequency OperationJgm嘉泰姆
Internal Synchronous RectifierJgm嘉泰姆
EMI Reduction Anti-Ring Control CircuitryJgm嘉泰姆
Low Shutdown Current: < 1.0uAJgm嘉泰姆
Over Current ProtectionJgm嘉泰姆
Over Temperature ProtectionJgm嘉泰姆
Light Load PFM Mode OperationJgm嘉泰姆
SOT23-6 PackageJgm嘉泰姆
三,应用范围 (Applications)Jgm嘉泰姆
Jgm嘉泰姆

 Li-ion Battery ChargerJgm嘉泰姆

 TYPICAL APPLICATIONS
USB AudioJgm嘉泰姆
Wireless MouseJgm嘉泰姆
Digital Still CamerasJgm嘉泰姆
MP3/MP4 PlayersJgm嘉泰姆
Portable InstrumentsJgm嘉泰姆
四.技术规格书下载（产品PDF）Jgm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！Jgm嘉泰姆

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五,产品封装图 (Package)Jgm嘉泰姆
Jgm嘉泰姆
Jgm嘉泰姆

六.电路原理图Jgm嘉泰姆
Jgm嘉泰姆
Jgm嘉泰姆
七,功能概述Jgm嘉泰姆
Jgm嘉泰姆
1)General DescriptionJgm嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.Jgm嘉泰姆
It utilizes internal MOSFET switches to achieve highJgm嘉泰姆
efficiency over full load current range. It operates at aJgm嘉泰姆
fixed switching frequency of 1.2MHz, and uses theJgm嘉泰姆
slope compensated peak current mode pulse widthJgm嘉泰姆
modulation (PWM) architecture. The device canJgm嘉泰姆
operate with an input voltage below 1V and theJgm嘉泰姆
minimum start-up voltage is 0.85V.Jgm嘉泰姆
2) Current Mode Operation Jgm嘉泰姆
The CXSU63034 is based on a slope compensated peakJgm嘉泰姆
current mode PWM control topology. It operates at aJgm嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachJgm嘉泰姆
clock cycle, the main switch (NMOS) is turned on andJgm嘉泰姆
the inductor current starts to ramp. After the maximumJgm嘉泰姆
duty cycle or the sense current signal equals the errorJgm嘉泰姆
amplifier output, the main switch is turned off and theJgm嘉泰姆
synchronous switch (PMOS) is turned on. This controlJgm嘉泰姆
topology features cycle-by-cycle current limiting whichJgm嘉泰姆
can prevent the main switch from overstress and theJgm嘉泰姆
external inductor from saturating.Jgm嘉泰姆
3) Synchronous Rectification Jgm嘉泰姆
The CXSU63034 integrates a synchronous rectifier toJgm嘉泰姆
improve efficiency as well as to eliminate the need forJgm嘉泰姆
an external Schottky diode. The synchronous rectifier isJgm嘉泰姆
used to reduce the loss condition contributed by theJgm嘉泰姆
forward voltage of an external Schottky diode. TheJgm嘉泰姆
synchronous rectifier is realized by a P-channel MOSJgm嘉泰姆
(PMOS) with gate control circuitry that incorporatesJgm嘉泰姆
八,相关芯片选择指南           更多同类产品........    Jgm嘉泰姆

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