目录fub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） fub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fub嘉泰姆

 fub嘉泰姆

一,产品概述(General Description)      fub嘉泰姆
fub嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upfub嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. Powerfub嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanfub嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034fub嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagefub嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atfub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 andfub嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.fub嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectfub嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.fub嘉泰姆
二.产品特点(Features)fub嘉泰姆
fub嘉泰姆
Input Voltage Operating Range: 0.85V to 5Vfub嘉泰姆
Voltage Output Range: 2.5V to 5.5Vfub嘉泰姆
Efficiency Up to 94%fub嘉泰姆
3.3V/100mA Output at 1.0V Inputfub嘉泰姆
5V/700mA Output at 3.6V Inputfub嘉泰姆
Low Start-up Voltage: 0.85V Typicalfub嘉泰姆
1.2MHz Constant Frequency Operationfub嘉泰姆
Internal Synchronous Rectifierfub嘉泰姆
EMI Reduction Anti-Ring Control Circuitryfub嘉泰姆
Low Shutdown Current: < 1.0uAfub嘉泰姆
Over Current Protectionfub嘉泰姆
Over Temperature Protectionfub嘉泰姆
Light Load PFM Mode Operationfub嘉泰姆
SOT23-6 Packagefub嘉泰姆
三,应用范围 (Applications)fub嘉泰姆
fub嘉泰姆

 Li-ion Battery Chargerfub嘉泰姆

 TYPICAL APPLICATIONS
USB Audiofub嘉泰姆
Wireless Mousefub嘉泰姆
Digital Still Camerasfub嘉泰姆
MP3/MP4 Playersfub嘉泰姆
Portable Instrumentsfub嘉泰姆
四.技术规格书下载（产品PDF）fub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！fub嘉泰姆

 fub嘉泰姆

五,产品封装图 (Package)fub嘉泰姆
fub嘉泰姆
fub嘉泰姆

六.电路原理图fub嘉泰姆
fub嘉泰姆
fub嘉泰姆
七,功能概述fub嘉泰姆
fub嘉泰姆
1)General Descriptionfub嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.fub嘉泰姆
It utilizes internal MOSFET switches to achieve highfub嘉泰姆
efficiency over full load current range. It operates at afub嘉泰姆
fixed switching frequency of 1.2MHz, and uses thefub嘉泰姆
slope compensated peak current mode pulse widthfub嘉泰姆
modulation (PWM) architecture. The device canfub嘉泰姆
operate with an input voltage below 1V and thefub嘉泰姆
minimum start-up voltage is 0.85V.fub嘉泰姆
2) Current Mode Operation fub嘉泰姆
The CXSU63034 is based on a slope compensated peakfub嘉泰姆
current mode PWM control topology. It operates at afub嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachfub嘉泰姆
clock cycle, the main switch (NMOS) is turned on andfub嘉泰姆
the inductor current starts to ramp. After the maximumfub嘉泰姆
duty cycle or the sense current signal equals the errorfub嘉泰姆
amplifier output, the main switch is turned off and thefub嘉泰姆
synchronous switch (PMOS) is turned on. This controlfub嘉泰姆
topology features cycle-by-cycle current limiting whichfub嘉泰姆
can prevent the main switch from overstress and thefub嘉泰姆
external inductor from saturating.fub嘉泰姆
3) Synchronous Rectification fub嘉泰姆
The CXSU63034 integrates a synchronous rectifier tofub嘉泰姆
improve efficiency as well as to eliminate the need forfub嘉泰姆
an external Schottky diode. The synchronous rectifier isfub嘉泰姆
used to reduce the loss condition contributed by thefub嘉泰姆
forward voltage of an external Schottky diode. Thefub嘉泰姆
synchronous rectifier is realized by a P-channel MOSfub嘉泰姆
(PMOS) with gate control circuitry that incorporatesfub嘉泰姆
八,相关芯片选择指南           更多同类产品........    fub嘉泰姆

fub嘉泰姆