目录PZ7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） PZ7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PZ7嘉泰姆

 PZ7嘉泰姆

一,产品概述(General Description)      PZ7嘉泰姆
PZ7嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upPZ7嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerPZ7嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanPZ7嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034PZ7嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltagePZ7嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atPZ7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 andPZ7嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.PZ7嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectPZ7嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.PZ7嘉泰姆
二.产品特点(Features)PZ7嘉泰姆
PZ7嘉泰姆
Input Voltage Operating Range: 0.85V to 5VPZ7嘉泰姆
Voltage Output Range: 2.5V to 5.5VPZ7嘉泰姆
Efficiency Up to 94%PZ7嘉泰姆
3.3V/100mA Output at 1.0V InputPZ7嘉泰姆
5V/700mA Output at 3.6V InputPZ7嘉泰姆
Low Start-up Voltage: 0.85V TypicalPZ7嘉泰姆
1.2MHz Constant Frequency OperationPZ7嘉泰姆
Internal Synchronous RectifierPZ7嘉泰姆
EMI Reduction Anti-Ring Control CircuitryPZ7嘉泰姆
Low Shutdown Current: < 1.0uAPZ7嘉泰姆
Over Current ProtectionPZ7嘉泰姆
Over Temperature ProtectionPZ7嘉泰姆
Light Load PFM Mode OperationPZ7嘉泰姆
SOT23-6 PackagePZ7嘉泰姆
三,应用范围 (Applications)PZ7嘉泰姆
PZ7嘉泰姆

 Li-ion Battery ChargerPZ7嘉泰姆

 TYPICAL APPLICATIONS
USB AudioPZ7嘉泰姆
Wireless MousePZ7嘉泰姆
Digital Still CamerasPZ7嘉泰姆
MP3/MP4 PlayersPZ7嘉泰姆
Portable InstrumentsPZ7嘉泰姆
四.技术规格书下载（产品PDF）PZ7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！PZ7嘉泰姆

 PZ7嘉泰姆

五,产品封装图 (Package)PZ7嘉泰姆
PZ7嘉泰姆
PZ7嘉泰姆

六.电路原理图PZ7嘉泰姆
PZ7嘉泰姆
PZ7嘉泰姆
七,功能概述PZ7嘉泰姆
PZ7嘉泰姆
1)General DescriptionPZ7嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.PZ7嘉泰姆
It utilizes internal MOSFET switches to achieve highPZ7嘉泰姆
efficiency over full load current range. It operates at aPZ7嘉泰姆
fixed switching frequency of 1.2MHz, and uses thePZ7嘉泰姆
slope compensated peak current mode pulse widthPZ7嘉泰姆
modulation (PWM) architecture. The device canPZ7嘉泰姆
operate with an input voltage below 1V and thePZ7嘉泰姆
minimum start-up voltage is 0.85V.PZ7嘉泰姆
2) Current Mode Operation PZ7嘉泰姆
The CXSU63034 is based on a slope compensated peakPZ7嘉泰姆
current mode PWM control topology. It operates at aPZ7嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachPZ7嘉泰姆
clock cycle, the main switch (NMOS) is turned on andPZ7嘉泰姆
the inductor current starts to ramp. After the maximumPZ7嘉泰姆
duty cycle or the sense current signal equals the errorPZ7嘉泰姆
amplifier output, the main switch is turned off and thePZ7嘉泰姆
synchronous switch (PMOS) is turned on. This controlPZ7嘉泰姆
topology features cycle-by-cycle current limiting whichPZ7嘉泰姆
can prevent the main switch from overstress and thePZ7嘉泰姆
external inductor from saturating.PZ7嘉泰姆
3) Synchronous Rectification PZ7嘉泰姆
The CXSU63034 integrates a synchronous rectifier toPZ7嘉泰姆
improve efficiency as well as to eliminate the need forPZ7嘉泰姆
an external Schottky diode. The synchronous rectifier isPZ7嘉泰姆
used to reduce the loss condition contributed by thePZ7嘉泰姆
forward voltage of an external Schottky diode. ThePZ7嘉泰姆
synchronous rectifier is realized by a P-channel MOSPZ7嘉泰姆
(PMOS) with gate control circuitry that incorporatesPZ7嘉泰姆
八,相关芯片选择指南           更多同类产品........    PZ7嘉泰姆

PZ7嘉泰姆