目录ash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） ash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ash嘉泰姆

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一,产品概述(General Description)      ash嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-upash嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. Powerash嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanash嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034ash嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageash嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atash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 andash嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.ash嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectash嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.ash嘉泰姆
二.产品特点(Features)ash嘉泰姆
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Input Voltage Operating Range: 0.85V to 5Vash嘉泰姆
Voltage Output Range: 2.5V to 5.5Vash嘉泰姆
Efficiency Up to 94%ash嘉泰姆
3.3V/100mA Output at 1.0V Inputash嘉泰姆
5V/700mA Output at 3.6V Inputash嘉泰姆
Low Start-up Voltage: 0.85V Typicalash嘉泰姆
1.2MHz Constant Frequency Operationash嘉泰姆
Internal Synchronous Rectifierash嘉泰姆
EMI Reduction Anti-Ring Control Circuitryash嘉泰姆
Low Shutdown Current: < 1.0uAash嘉泰姆
Over Current Protectionash嘉泰姆
Over Temperature Protectionash嘉泰姆
Light Load PFM Mode Operationash嘉泰姆
SOT23-6 Packageash嘉泰姆
三,应用范围 (Applications)ash嘉泰姆
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 Li-ion Battery Chargerash嘉泰姆

 TYPICAL APPLICATIONS
USB Audioash嘉泰姆
Wireless Mouseash嘉泰姆
Digital Still Camerasash嘉泰姆
MP3/MP4 Playersash嘉泰姆
Portable Instrumentsash嘉泰姆
四.技术规格书下载（产品PDF）ash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！ash嘉泰姆

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五,产品封装图 (Package)ash嘉泰姆
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六.电路原理图ash嘉泰姆
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七,功能概述ash嘉泰姆
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1)General Descriptionash嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.ash嘉泰姆
It utilizes internal MOSFET switches to achieve highash嘉泰姆
efficiency over full load current range. It operates at aash嘉泰姆
fixed switching frequency of 1.2MHz, and uses theash嘉泰姆
slope compensated peak current mode pulse widthash嘉泰姆
modulation (PWM) architecture. The device canash嘉泰姆
operate with an input voltage below 1V and theash嘉泰姆
minimum start-up voltage is 0.85V.ash嘉泰姆
2) Current Mode Operation ash嘉泰姆
The CXSU63034 is based on a slope compensated peakash嘉泰姆
current mode PWM control topology. It operates at aash嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachash嘉泰姆
clock cycle, the main switch (NMOS) is turned on andash嘉泰姆
the inductor current starts to ramp. After the maximumash嘉泰姆
duty cycle or the sense current signal equals the errorash嘉泰姆
amplifier output, the main switch is turned off and theash嘉泰姆
synchronous switch (PMOS) is turned on. This controlash嘉泰姆
topology features cycle-by-cycle current limiting whichash嘉泰姆
can prevent the main switch from overstress and theash嘉泰姆
external inductor from saturating.ash嘉泰姆
3) Synchronous Rectification ash嘉泰姆
The CXSU63034 integrates a synchronous rectifier toash嘉泰姆
improve efficiency as well as to eliminate the need forash嘉泰姆
an external Schottky diode. The synchronous rectifier isash嘉泰姆
used to reduce the loss condition contributed by theash嘉泰姆
forward voltage of an external Schottky diode. Theash嘉泰姆
synchronous rectifier is realized by a P-channel MOSash嘉泰姆
(PMOS) with gate control circuitry that incorporatesash嘉泰姆
八,相关芯片选择指南           更多同类产品........    ash嘉泰姆

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