目录dGN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） dGN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dGN嘉泰姆

 dGN嘉泰姆

一,产品概述(General Description)      dGN嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-updGN嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerdGN嘉泰姆
dissipation during operation is only 40μA typical and drops to less thandGN嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034dGN嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagedGN嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atdGN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 anddGN嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.dGN嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectdGN嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.dGN嘉泰姆
二.产品特点(Features)dGN嘉泰姆
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Input Voltage Operating Range: 0.85V to 5VdGN嘉泰姆
Voltage Output Range: 2.5V to 5.5VdGN嘉泰姆
Efficiency Up to 94%dGN嘉泰姆
3.3V/100mA Output at 1.0V InputdGN嘉泰姆
5V/700mA Output at 3.6V InputdGN嘉泰姆
Low Start-up Voltage: 0.85V TypicaldGN嘉泰姆
1.2MHz Constant Frequency OperationdGN嘉泰姆
Internal Synchronous RectifierdGN嘉泰姆
EMI Reduction Anti-Ring Control CircuitrydGN嘉泰姆
Low Shutdown Current: < 1.0uAdGN嘉泰姆
Over Current ProtectiondGN嘉泰姆
Over Temperature ProtectiondGN嘉泰姆
Light Load PFM Mode OperationdGN嘉泰姆
SOT23-6 PackagedGN嘉泰姆
三,应用范围 (Applications)dGN嘉泰姆
dGN嘉泰姆

 Li-ion Battery ChargerdGN嘉泰姆

 TYPICAL APPLICATIONS
USB AudiodGN嘉泰姆
Wireless MousedGN嘉泰姆
Digital Still CamerasdGN嘉泰姆
MP3/MP4 PlayersdGN嘉泰姆
Portable InstrumentsdGN嘉泰姆
四.技术规格书下载（产品PDF）dGN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！dGN嘉泰姆

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五,产品封装图 (Package)dGN嘉泰姆
dGN嘉泰姆
dGN嘉泰姆

六.电路原理图dGN嘉泰姆
dGN嘉泰姆
dGN嘉泰姆
七,功能概述dGN嘉泰姆
dGN嘉泰姆
1)General DescriptiondGN嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.dGN嘉泰姆
It utilizes internal MOSFET switches to achieve highdGN嘉泰姆
efficiency over full load current range. It operates at adGN嘉泰姆
fixed switching frequency of 1.2MHz, and uses thedGN嘉泰姆
slope compensated peak current mode pulse widthdGN嘉泰姆
modulation (PWM) architecture. The device candGN嘉泰姆
operate with an input voltage below 1V and thedGN嘉泰姆
minimum start-up voltage is 0.85V.dGN嘉泰姆
2) Current Mode Operation dGN嘉泰姆
The CXSU63034 is based on a slope compensated peakdGN嘉泰姆
current mode PWM control topology. It operates at adGN嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachdGN嘉泰姆
clock cycle, the main switch (NMOS) is turned on anddGN嘉泰姆
the inductor current starts to ramp. After the maximumdGN嘉泰姆
duty cycle or the sense current signal equals the errordGN嘉泰姆
amplifier output, the main switch is turned off and thedGN嘉泰姆
synchronous switch (PMOS) is turned on. This controldGN嘉泰姆
topology features cycle-by-cycle current limiting whichdGN嘉泰姆
can prevent the main switch from overstress and thedGN嘉泰姆
external inductor from saturating.dGN嘉泰姆
3) Synchronous Rectification dGN嘉泰姆
The CXSU63034 integrates a synchronous rectifier todGN嘉泰姆
improve efficiency as well as to eliminate the need fordGN嘉泰姆
an external Schottky diode. The synchronous rectifier isdGN嘉泰姆
used to reduce the loss condition contributed by thedGN嘉泰姆
forward voltage of an external Schottky diode. ThedGN嘉泰姆
synchronous rectifier is realized by a P-channel MOSdGN嘉泰姆
(PMOS) with gate control circuitry that incorporatesdGN嘉泰姆
八,相关芯片选择指南           更多同类产品........    dGN嘉泰姆

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