目录lay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） lay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lay嘉泰姆

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一,产品概述(General Description)      lay嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-uplay嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. Powerlay嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanlay嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034lay嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagelay嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atlay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 andlay嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.lay嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectlay嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.lay嘉泰姆
二.产品特点(Features)lay嘉泰姆
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Input Voltage Operating Range: 0.85V to 5Vlay嘉泰姆
Voltage Output Range: 2.5V to 5.5Vlay嘉泰姆
Efficiency Up to 94%lay嘉泰姆
3.3V/100mA Output at 1.0V Inputlay嘉泰姆
5V/700mA Output at 3.6V Inputlay嘉泰姆
Low Start-up Voltage: 0.85V Typicallay嘉泰姆
1.2MHz Constant Frequency Operationlay嘉泰姆
Internal Synchronous Rectifierlay嘉泰姆
EMI Reduction Anti-Ring Control Circuitrylay嘉泰姆
Low Shutdown Current: < 1.0uAlay嘉泰姆
Over Current Protectionlay嘉泰姆
Over Temperature Protectionlay嘉泰姆
Light Load PFM Mode Operationlay嘉泰姆
SOT23-6 Packagelay嘉泰姆
三,应用范围 (Applications)lay嘉泰姆
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 Li-ion Battery Chargerlay嘉泰姆

 TYPICAL APPLICATIONS
USB Audiolay嘉泰姆
Wireless Mouselay嘉泰姆
Digital Still Cameraslay嘉泰姆
MP3/MP4 Playerslay嘉泰姆
Portable Instrumentslay嘉泰姆
四.技术规格书下载（产品PDF）lay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！lay嘉泰姆

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五,产品封装图 (Package)lay嘉泰姆
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六.电路原理图lay嘉泰姆
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七,功能概述lay嘉泰姆
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1)General Descriptionlay嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.lay嘉泰姆
It utilizes internal MOSFET switches to achieve highlay嘉泰姆
efficiency over full load current range. It operates at alay嘉泰姆
fixed switching frequency of 1.2MHz, and uses thelay嘉泰姆
slope compensated peak current mode pulse widthlay嘉泰姆
modulation (PWM) architecture. The device canlay嘉泰姆
operate with an input voltage below 1V and thelay嘉泰姆
minimum start-up voltage is 0.85V.lay嘉泰姆
2) Current Mode Operation lay嘉泰姆
The CXSU63034 is based on a slope compensated peaklay嘉泰姆
current mode PWM control topology. It operates at alay嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachlay嘉泰姆
clock cycle, the main switch (NMOS) is turned on andlay嘉泰姆
the inductor current starts to ramp. After the maximumlay嘉泰姆
duty cycle or the sense current signal equals the errorlay嘉泰姆
amplifier output, the main switch is turned off and thelay嘉泰姆
synchronous switch (PMOS) is turned on. This controllay嘉泰姆
topology features cycle-by-cycle current limiting whichlay嘉泰姆
can prevent the main switch from overstress and thelay嘉泰姆
external inductor from saturating.lay嘉泰姆
3) Synchronous Rectification lay嘉泰姆
The CXSU63034 integrates a synchronous rectifier tolay嘉泰姆
improve efficiency as well as to eliminate the need forlay嘉泰姆
an external Schottky diode. The synchronous rectifier islay嘉泰姆
used to reduce the loss condition contributed by thelay嘉泰姆
forward voltage of an external Schottky diode. Thelay嘉泰姆
synchronous rectifier is realized by a P-channel MOSlay嘉泰姆
(PMOS) with gate control circuitry that incorporateslay嘉泰姆
八,相关芯片选择指南           更多同类产品........    lay嘉泰姆

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