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目录gl5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） gl5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gl5嘉泰姆

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一,产品概述(General Description)      gl5嘉泰姆
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     The CXSU63034 is a highly efficient fix frequencysynchronous step-upgl5嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. Powergl5嘉泰姆
dissipation during operation is only 40μA typical and drops to less thangl5嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034gl5嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagegl5嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atgl5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 andgl5嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.gl5嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectgl5嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.gl5嘉泰姆
二.产品特点(Features)gl5嘉泰姆
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Input Voltage Operating Range: 0.85V to 5Vgl5嘉泰姆
Voltage Output Range: 2.5V to 5.5Vgl5嘉泰姆
Efficiency Up to 94%gl5嘉泰姆
3.3V/100mA Output at 1.0V Inputgl5嘉泰姆
5V/700mA Output at 3.6V Inputgl5嘉泰姆
Low Start-up Voltage: 0.85V Typicalgl5嘉泰姆
1.2MHz Constant Frequency Operationgl5嘉泰姆
Internal Synchronous Rectifiergl5嘉泰姆
EMI Reduction Anti-Ring Control Circuitrygl5嘉泰姆
Low Shutdown Current: < 1.0uAgl5嘉泰姆
Over Current Protectiongl5嘉泰姆
Over Temperature Protectiongl5嘉泰姆
Light Load PFM Mode Operationgl5嘉泰姆
SOT23-6 Packagegl5嘉泰姆
三,应用范围 (Applications)gl5嘉泰姆
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 Li-ion Battery Chargergl5嘉泰姆

 TYPICAL APPLICATIONS
USB Audiogl5嘉泰姆
Wireless Mousegl5嘉泰姆
Digital Still Camerasgl5嘉泰姆
MP3/MP4 Playersgl5嘉泰姆
Portable Instrumentsgl5嘉泰姆
四.技术规格书下载（产品PDF）gl5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！gl5嘉泰姆

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五,产品封装图 (Package)gl5嘉泰姆
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六.电路原理图gl5嘉泰姆
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七,功能概述gl5嘉泰姆
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1)General Descriptiongl5嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.gl5嘉泰姆
It utilizes internal MOSFET switches to achieve highgl5嘉泰姆
efficiency over full load current range. It operates at agl5嘉泰姆
fixed switching frequency of 1.2MHz, and uses thegl5嘉泰姆
slope compensated peak current mode pulse widthgl5嘉泰姆
modulation (PWM) architecture. The device cangl5嘉泰姆
operate with an input voltage below 1V and thegl5嘉泰姆
minimum start-up voltage is 0.85V.gl5嘉泰姆
2) Current Mode Operation gl5嘉泰姆
The CXSU63034 is based on a slope compensated peakgl5嘉泰姆
current mode PWM control topology. It operates at agl5嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachgl5嘉泰姆
clock cycle, the main switch (NMOS) is turned on andgl5嘉泰姆
the inductor current starts to ramp. After the maximumgl5嘉泰姆
duty cycle or the sense current signal equals the errorgl5嘉泰姆
amplifier output, the main switch is turned off and thegl5嘉泰姆
synchronous switch (PMOS) is turned on. This controlgl5嘉泰姆
topology features cycle-by-cycle current limiting whichgl5嘉泰姆
can prevent the main switch from overstress and thegl5嘉泰姆
external inductor from saturating.gl5嘉泰姆
3) Synchronous Rectification gl5嘉泰姆
The CXSU63034 integrates a synchronous rectifier togl5嘉泰姆
improve efficiency as well as to eliminate the need forgl5嘉泰姆
an external Schottky diode. The synchronous rectifier isgl5嘉泰姆
used to reduce the loss condition contributed by thegl5嘉泰姆
forward voltage of an external Schottky diode. Thegl5嘉泰姆
synchronous rectifier is realized by a P-channel MOSgl5嘉泰姆
(PMOS) with gate control circuitry that incorporatesgl5嘉泰姆
八,相关芯片选择指南           更多同类产品........    gl5嘉泰姆

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◀ 上一篇:1.5MHz定频开关内部同步整流器2.5V至5V输出自动PFM/PWM模式运行CXSU63033A定频升压型DC/DC变换器

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