目录WQm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） WQm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WQm嘉泰姆

 WQm嘉泰姆

一,产品概述(General Description)      WQm嘉泰姆
WQm嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upWQm嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerWQm嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanWQm嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034WQm嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageWQm嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atWQm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 andWQm嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.WQm嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectWQm嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.WQm嘉泰姆
二.产品特点(Features)WQm嘉泰姆
WQm嘉泰姆
Input Voltage Operating Range: 0.85V to 5VWQm嘉泰姆
Voltage Output Range: 2.5V to 5.5VWQm嘉泰姆
Efficiency Up to 94%WQm嘉泰姆
3.3V/100mA Output at 1.0V InputWQm嘉泰姆
5V/700mA Output at 3.6V InputWQm嘉泰姆
Low Start-up Voltage: 0.85V TypicalWQm嘉泰姆
1.2MHz Constant Frequency OperationWQm嘉泰姆
Internal Synchronous RectifierWQm嘉泰姆
EMI Reduction Anti-Ring Control CircuitryWQm嘉泰姆
Low Shutdown Current: < 1.0uAWQm嘉泰姆
Over Current ProtectionWQm嘉泰姆
Over Temperature ProtectionWQm嘉泰姆
Light Load PFM Mode OperationWQm嘉泰姆
SOT23-6 PackageWQm嘉泰姆
三,应用范围 (Applications)WQm嘉泰姆
WQm嘉泰姆

 Li-ion Battery ChargerWQm嘉泰姆

 TYPICAL APPLICATIONS
USB AudioWQm嘉泰姆
Wireless MouseWQm嘉泰姆
Digital Still CamerasWQm嘉泰姆
MP3/MP4 PlayersWQm嘉泰姆
Portable InstrumentsWQm嘉泰姆
四.技术规格书下载（产品PDF）WQm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！WQm嘉泰姆

 WQm嘉泰姆

五,产品封装图 (Package)WQm嘉泰姆
WQm嘉泰姆
WQm嘉泰姆

六.电路原理图WQm嘉泰姆
WQm嘉泰姆
WQm嘉泰姆
七,功能概述WQm嘉泰姆
WQm嘉泰姆
1)General DescriptionWQm嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.WQm嘉泰姆
It utilizes internal MOSFET switches to achieve highWQm嘉泰姆
efficiency over full load current range. It operates at aWQm嘉泰姆
fixed switching frequency of 1.2MHz, and uses theWQm嘉泰姆
slope compensated peak current mode pulse widthWQm嘉泰姆
modulation (PWM) architecture. The device canWQm嘉泰姆
operate with an input voltage below 1V and theWQm嘉泰姆
minimum start-up voltage is 0.85V.WQm嘉泰姆
2) Current Mode Operation WQm嘉泰姆
The CXSU63034 is based on a slope compensated peakWQm嘉泰姆
current mode PWM control topology. It operates at aWQm嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachWQm嘉泰姆
clock cycle, the main switch (NMOS) is turned on andWQm嘉泰姆
the inductor current starts to ramp. After the maximumWQm嘉泰姆
duty cycle or the sense current signal equals the errorWQm嘉泰姆
amplifier output, the main switch is turned off and theWQm嘉泰姆
synchronous switch (PMOS) is turned on. This controlWQm嘉泰姆
topology features cycle-by-cycle current limiting whichWQm嘉泰姆
can prevent the main switch from overstress and theWQm嘉泰姆
external inductor from saturating.WQm嘉泰姆
3) Synchronous Rectification WQm嘉泰姆
The CXSU63034 integrates a synchronous rectifier toWQm嘉泰姆
improve efficiency as well as to eliminate the need forWQm嘉泰姆
an external Schottky diode. The synchronous rectifier isWQm嘉泰姆
used to reduce the loss condition contributed by theWQm嘉泰姆
forward voltage of an external Schottky diode. TheWQm嘉泰姆
synchronous rectifier is realized by a P-channel MOSWQm嘉泰姆
(PMOS) with gate control circuitry that incorporatesWQm嘉泰姆
八,相关芯片选择指南           更多同类产品........    WQm嘉泰姆

WQm嘉泰姆

共有条评论 用户名: 密码: 验证码: 匿名发表