目录sKw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） sKw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sKw嘉泰姆

 sKw嘉泰姆

一,产品概述(General Description)      sKw嘉泰姆
sKw嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upsKw嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowersKw嘉泰姆
dissipation during operation is only 40μA typical and drops to less thansKw嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034sKw嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagesKw嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atsKw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 andsKw嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.sKw嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectsKw嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.sKw嘉泰姆
二.产品特点(Features)sKw嘉泰姆
sKw嘉泰姆
Input Voltage Operating Range: 0.85V to 5VsKw嘉泰姆
Voltage Output Range: 2.5V to 5.5VsKw嘉泰姆
Efficiency Up to 94%sKw嘉泰姆
3.3V/100mA Output at 1.0V InputsKw嘉泰姆
5V/700mA Output at 3.6V InputsKw嘉泰姆
Low Start-up Voltage: 0.85V TypicalsKw嘉泰姆
1.2MHz Constant Frequency OperationsKw嘉泰姆
Internal Synchronous RectifiersKw嘉泰姆
EMI Reduction Anti-Ring Control CircuitrysKw嘉泰姆
Low Shutdown Current: < 1.0uAsKw嘉泰姆
Over Current ProtectionsKw嘉泰姆
Over Temperature ProtectionsKw嘉泰姆
Light Load PFM Mode OperationsKw嘉泰姆
SOT23-6 PackagesKw嘉泰姆
三,应用范围 (Applications)sKw嘉泰姆
sKw嘉泰姆

 Li-ion Battery ChargersKw嘉泰姆

 TYPICAL APPLICATIONS
USB AudiosKw嘉泰姆
Wireless MousesKw嘉泰姆
Digital Still CamerassKw嘉泰姆
MP3/MP4 PlayerssKw嘉泰姆
Portable InstrumentssKw嘉泰姆
四.技术规格书下载（产品PDF）sKw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！sKw嘉泰姆

 sKw嘉泰姆

五,产品封装图 (Package)sKw嘉泰姆
sKw嘉泰姆
sKw嘉泰姆

六.电路原理图sKw嘉泰姆
sKw嘉泰姆
sKw嘉泰姆
七,功能概述sKw嘉泰姆
sKw嘉泰姆
1)General DescriptionsKw嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.sKw嘉泰姆
It utilizes internal MOSFET switches to achieve highsKw嘉泰姆
efficiency over full load current range. It operates at asKw嘉泰姆
fixed switching frequency of 1.2MHz, and uses thesKw嘉泰姆
slope compensated peak current mode pulse widthsKw嘉泰姆
modulation (PWM) architecture. The device cansKw嘉泰姆
operate with an input voltage below 1V and thesKw嘉泰姆
minimum start-up voltage is 0.85V.sKw嘉泰姆
2) Current Mode Operation sKw嘉泰姆
The CXSU63034 is based on a slope compensated peaksKw嘉泰姆
current mode PWM control topology. It operates at asKw嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachsKw嘉泰姆
clock cycle, the main switch (NMOS) is turned on andsKw嘉泰姆
the inductor current starts to ramp. After the maximumsKw嘉泰姆
duty cycle or the sense current signal equals the errorsKw嘉泰姆
amplifier output, the main switch is turned off and thesKw嘉泰姆
synchronous switch (PMOS) is turned on. This controlsKw嘉泰姆
topology features cycle-by-cycle current limiting whichsKw嘉泰姆
can prevent the main switch from overstress and thesKw嘉泰姆
external inductor from saturating.sKw嘉泰姆
3) Synchronous Rectification sKw嘉泰姆
The CXSU63034 integrates a synchronous rectifier tosKw嘉泰姆
improve efficiency as well as to eliminate the need forsKw嘉泰姆
an external Schottky diode. The synchronous rectifier issKw嘉泰姆
used to reduce the loss condition contributed by thesKw嘉泰姆
forward voltage of an external Schottky diode. ThesKw嘉泰姆
synchronous rectifier is realized by a P-channel MOSsKw嘉泰姆
(PMOS) with gate control circuitry that incorporatessKw嘉泰姆
八,相关芯片选择指南           更多同类产品........    sKw嘉泰姆

sKw嘉泰姆

共有条评论 用户名: 密码: 验证码: 匿名发表