目录Fx6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） Fx6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Fx6嘉泰姆

 Fx6嘉泰姆

一,产品概述(General Description)      Fx6嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-upFx6嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerFx6嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanFx6嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034Fx6嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageFx6嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atFx6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 andFx6嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.Fx6嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectFx6嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.Fx6嘉泰姆
二.产品特点(Features)Fx6嘉泰姆
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Input Voltage Operating Range: 0.85V to 5VFx6嘉泰姆
Voltage Output Range: 2.5V to 5.5VFx6嘉泰姆
Efficiency Up to 94%Fx6嘉泰姆
3.3V/100mA Output at 1.0V InputFx6嘉泰姆
5V/700mA Output at 3.6V InputFx6嘉泰姆
Low Start-up Voltage: 0.85V TypicalFx6嘉泰姆
1.2MHz Constant Frequency OperationFx6嘉泰姆
Internal Synchronous RectifierFx6嘉泰姆
EMI Reduction Anti-Ring Control CircuitryFx6嘉泰姆
Low Shutdown Current: < 1.0uAFx6嘉泰姆
Over Current ProtectionFx6嘉泰姆
Over Temperature ProtectionFx6嘉泰姆
Light Load PFM Mode OperationFx6嘉泰姆
SOT23-6 PackageFx6嘉泰姆
三,应用范围 (Applications)Fx6嘉泰姆
Fx6嘉泰姆

 Li-ion Battery ChargerFx6嘉泰姆

 TYPICAL APPLICATIONS
USB AudioFx6嘉泰姆
Wireless MouseFx6嘉泰姆
Digital Still CamerasFx6嘉泰姆
MP3/MP4 PlayersFx6嘉泰姆
Portable InstrumentsFx6嘉泰姆
四.技术规格书下载（产品PDF）Fx6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！Fx6嘉泰姆

 Fx6嘉泰姆

五,产品封装图 (Package)Fx6嘉泰姆
Fx6嘉泰姆
Fx6嘉泰姆

六.电路原理图Fx6嘉泰姆
Fx6嘉泰姆
Fx6嘉泰姆
七,功能概述Fx6嘉泰姆
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1)General DescriptionFx6嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.Fx6嘉泰姆
It utilizes internal MOSFET switches to achieve highFx6嘉泰姆
efficiency over full load current range. It operates at aFx6嘉泰姆
fixed switching frequency of 1.2MHz, and uses theFx6嘉泰姆
slope compensated peak current mode pulse widthFx6嘉泰姆
modulation (PWM) architecture. The device canFx6嘉泰姆
operate with an input voltage below 1V and theFx6嘉泰姆
minimum start-up voltage is 0.85V.Fx6嘉泰姆
2) Current Mode Operation Fx6嘉泰姆
The CXSU63034 is based on a slope compensated peakFx6嘉泰姆
current mode PWM control topology. It operates at aFx6嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachFx6嘉泰姆
clock cycle, the main switch (NMOS) is turned on andFx6嘉泰姆
the inductor current starts to ramp. After the maximumFx6嘉泰姆
duty cycle or the sense current signal equals the errorFx6嘉泰姆
amplifier output, the main switch is turned off and theFx6嘉泰姆
synchronous switch (PMOS) is turned on. This controlFx6嘉泰姆
topology features cycle-by-cycle current limiting whichFx6嘉泰姆
can prevent the main switch from overstress and theFx6嘉泰姆
external inductor from saturating.Fx6嘉泰姆
3) Synchronous Rectification Fx6嘉泰姆
The CXSU63034 integrates a synchronous rectifier toFx6嘉泰姆
improve efficiency as well as to eliminate the need forFx6嘉泰姆
an external Schottky diode. The synchronous rectifier isFx6嘉泰姆
used to reduce the loss condition contributed by theFx6嘉泰姆
forward voltage of an external Schottky diode. TheFx6嘉泰姆
synchronous rectifier is realized by a P-channel MOSFx6嘉泰姆
(PMOS) with gate control circuitry that incorporatesFx6嘉泰姆
八,相关芯片选择指南           更多同类产品........    Fx6嘉泰姆

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