目录Cp7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） Cp7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Cp7嘉泰姆

 Cp7嘉泰姆

一,产品概述(General Description)      Cp7嘉泰姆
Cp7嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upCp7嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerCp7嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanCp7嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034Cp7嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageCp7嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atCp7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 andCp7嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.Cp7嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectCp7嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.Cp7嘉泰姆
二.产品特点(Features)Cp7嘉泰姆
Cp7嘉泰姆
Input Voltage Operating Range: 0.85V to 5VCp7嘉泰姆
Voltage Output Range: 2.5V to 5.5VCp7嘉泰姆
Efficiency Up to 94%Cp7嘉泰姆
3.3V/100mA Output at 1.0V InputCp7嘉泰姆
5V/700mA Output at 3.6V InputCp7嘉泰姆
Low Start-up Voltage: 0.85V TypicalCp7嘉泰姆
1.2MHz Constant Frequency OperationCp7嘉泰姆
Internal Synchronous RectifierCp7嘉泰姆
EMI Reduction Anti-Ring Control CircuitryCp7嘉泰姆
Low Shutdown Current: < 1.0uACp7嘉泰姆
Over Current ProtectionCp7嘉泰姆
Over Temperature ProtectionCp7嘉泰姆
Light Load PFM Mode OperationCp7嘉泰姆
SOT23-6 PackageCp7嘉泰姆
三,应用范围 (Applications)Cp7嘉泰姆
Cp7嘉泰姆

 Li-ion Battery ChargerCp7嘉泰姆

 TYPICAL APPLICATIONS
USB AudioCp7嘉泰姆
Wireless MouseCp7嘉泰姆
Digital Still CamerasCp7嘉泰姆
MP3/MP4 PlayersCp7嘉泰姆
Portable InstrumentsCp7嘉泰姆
四.技术规格书下载（产品PDF）Cp7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！Cp7嘉泰姆

 Cp7嘉泰姆

五,产品封装图 (Package)Cp7嘉泰姆
Cp7嘉泰姆
Cp7嘉泰姆

六.电路原理图Cp7嘉泰姆
Cp7嘉泰姆
Cp7嘉泰姆
七,功能概述Cp7嘉泰姆
Cp7嘉泰姆
1)General DescriptionCp7嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.Cp7嘉泰姆
It utilizes internal MOSFET switches to achieve highCp7嘉泰姆
efficiency over full load current range. It operates at aCp7嘉泰姆
fixed switching frequency of 1.2MHz, and uses theCp7嘉泰姆
slope compensated peak current mode pulse widthCp7嘉泰姆
modulation (PWM) architecture. The device canCp7嘉泰姆
operate with an input voltage below 1V and theCp7嘉泰姆
minimum start-up voltage is 0.85V.Cp7嘉泰姆
2) Current Mode Operation Cp7嘉泰姆
The CXSU63034 is based on a slope compensated peakCp7嘉泰姆
current mode PWM control topology. It operates at aCp7嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachCp7嘉泰姆
clock cycle, the main switch (NMOS) is turned on andCp7嘉泰姆
the inductor current starts to ramp. After the maximumCp7嘉泰姆
duty cycle or the sense current signal equals the errorCp7嘉泰姆
amplifier output, the main switch is turned off and theCp7嘉泰姆
synchronous switch (PMOS) is turned on. This controlCp7嘉泰姆
topology features cycle-by-cycle current limiting whichCp7嘉泰姆
can prevent the main switch from overstress and theCp7嘉泰姆
external inductor from saturating.Cp7嘉泰姆
3) Synchronous Rectification Cp7嘉泰姆
The CXSU63034 integrates a synchronous rectifier toCp7嘉泰姆
improve efficiency as well as to eliminate the need forCp7嘉泰姆
an external Schottky diode. The synchronous rectifier isCp7嘉泰姆
used to reduce the loss condition contributed by theCp7嘉泰姆
forward voltage of an external Schottky diode. TheCp7嘉泰姆
synchronous rectifier is realized by a P-channel MOSCp7嘉泰姆
(PMOS) with gate control circuitry that incorporatesCp7嘉泰姆
八,相关芯片选择指南           更多同类产品........    Cp7嘉泰姆

Cp7嘉泰姆

共有条评论 用户名: 密码: 验证码: 匿名发表