目录CGQ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） CGQ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CGQ嘉泰姆

 CGQ嘉泰姆

一,产品概述(General Description)      CGQ嘉泰姆
CGQ嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upCGQ嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerCGQ嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanCGQ嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034CGQ嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageCGQ嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atCGQ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 andCGQ嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.CGQ嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectCGQ嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.CGQ嘉泰姆
二.产品特点(Features)CGQ嘉泰姆
CGQ嘉泰姆
Input Voltage Operating Range: 0.85V to 5VCGQ嘉泰姆
Voltage Output Range: 2.5V to 5.5VCGQ嘉泰姆
Efficiency Up to 94%CGQ嘉泰姆
3.3V/100mA Output at 1.0V InputCGQ嘉泰姆
5V/700mA Output at 3.6V InputCGQ嘉泰姆
Low Start-up Voltage: 0.85V TypicalCGQ嘉泰姆
1.2MHz Constant Frequency OperationCGQ嘉泰姆
Internal Synchronous RectifierCGQ嘉泰姆
EMI Reduction Anti-Ring Control CircuitryCGQ嘉泰姆
Low Shutdown Current: < 1.0uACGQ嘉泰姆
Over Current ProtectionCGQ嘉泰姆
Over Temperature ProtectionCGQ嘉泰姆
Light Load PFM Mode OperationCGQ嘉泰姆
SOT23-6 PackageCGQ嘉泰姆
三,应用范围 (Applications)CGQ嘉泰姆
CGQ嘉泰姆

 Li-ion Battery ChargerCGQ嘉泰姆

 TYPICAL APPLICATIONS
USB AudioCGQ嘉泰姆
Wireless MouseCGQ嘉泰姆
Digital Still CamerasCGQ嘉泰姆
MP3/MP4 PlayersCGQ嘉泰姆
Portable InstrumentsCGQ嘉泰姆
四.技术规格书下载（产品PDF）CGQ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！CGQ嘉泰姆

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五,产品封装图 (Package)CGQ嘉泰姆
CGQ嘉泰姆
CGQ嘉泰姆

六.电路原理图CGQ嘉泰姆
CGQ嘉泰姆
CGQ嘉泰姆
七,功能概述CGQ嘉泰姆
CGQ嘉泰姆
1)General DescriptionCGQ嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.CGQ嘉泰姆
It utilizes internal MOSFET switches to achieve highCGQ嘉泰姆
efficiency over full load current range. It operates at aCGQ嘉泰姆
fixed switching frequency of 1.2MHz, and uses theCGQ嘉泰姆
slope compensated peak current mode pulse widthCGQ嘉泰姆
modulation (PWM) architecture. The device canCGQ嘉泰姆
operate with an input voltage below 1V and theCGQ嘉泰姆
minimum start-up voltage is 0.85V.CGQ嘉泰姆
2) Current Mode Operation CGQ嘉泰姆
The CXSU63034 is based on a slope compensated peakCGQ嘉泰姆
current mode PWM control topology. It operates at aCGQ嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachCGQ嘉泰姆
clock cycle, the main switch (NMOS) is turned on andCGQ嘉泰姆
the inductor current starts to ramp. After the maximumCGQ嘉泰姆
duty cycle or the sense current signal equals the errorCGQ嘉泰姆
amplifier output, the main switch is turned off and theCGQ嘉泰姆
synchronous switch (PMOS) is turned on. This controlCGQ嘉泰姆
topology features cycle-by-cycle current limiting whichCGQ嘉泰姆
can prevent the main switch from overstress and theCGQ嘉泰姆
external inductor from saturating.CGQ嘉泰姆
3) Synchronous Rectification CGQ嘉泰姆
The CXSU63034 integrates a synchronous rectifier toCGQ嘉泰姆
improve efficiency as well as to eliminate the need forCGQ嘉泰姆
an external Schottky diode. The synchronous rectifier isCGQ嘉泰姆
used to reduce the loss condition contributed by theCGQ嘉泰姆
forward voltage of an external Schottky diode. TheCGQ嘉泰姆
synchronous rectifier is realized by a P-channel MOSCGQ嘉泰姆
(PMOS) with gate control circuitry that incorporatesCGQ嘉泰姆
八,相关芯片选择指南           更多同类产品........    CGQ嘉泰姆

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