• "

Ordering

目录ZQb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） ZQb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ZQb嘉泰姆

 ZQb嘉泰姆

一,产品概述(General Description)      ZQb嘉泰姆
ZQb嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upZQb嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerZQb嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanZQb嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034ZQb嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageZQb嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atZQb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 andZQb嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.ZQb嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectZQb嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.ZQb嘉泰姆
二.产品特点(Features)ZQb嘉泰姆
ZQb嘉泰姆
Input Voltage Operating Range: 0.85V to 5VZQb嘉泰姆
Voltage Output Range: 2.5V to 5.5VZQb嘉泰姆
Efficiency Up to 94%ZQb嘉泰姆
3.3V/100mA Output at 1.0V InputZQb嘉泰姆
5V/700mA Output at 3.6V InputZQb嘉泰姆
Low Start-up Voltage: 0.85V TypicalZQb嘉泰姆
1.2MHz Constant Frequency OperationZQb嘉泰姆
Internal Synchronous RectifierZQb嘉泰姆
EMI Reduction Anti-Ring Control CircuitryZQb嘉泰姆
Low Shutdown Current: < 1.0uAZQb嘉泰姆
Over Current ProtectionZQb嘉泰姆
Over Temperature ProtectionZQb嘉泰姆
Light Load PFM Mode OperationZQb嘉泰姆
SOT23-6 PackageZQb嘉泰姆
三,应用范围 (Applications)ZQb嘉泰姆
ZQb嘉泰姆

 Li-ion Battery ChargerZQb嘉泰姆

 TYPICAL APPLICATIONS
USB AudioZQb嘉泰姆
Wireless MouseZQb嘉泰姆
Digital Still CamerasZQb嘉泰姆
MP3/MP4 PlayersZQb嘉泰姆
Portable InstrumentsZQb嘉泰姆
四.技术规格书下载（产品PDF）ZQb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！ZQb嘉泰姆

 ZQb嘉泰姆

五,产品封装图 (Package)ZQb嘉泰姆
ZQb嘉泰姆
ZQb嘉泰姆

六.电路原理图ZQb嘉泰姆
ZQb嘉泰姆
ZQb嘉泰姆
七,功能概述ZQb嘉泰姆
ZQb嘉泰姆
1)General DescriptionZQb嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.ZQb嘉泰姆
It utilizes internal MOSFET switches to achieve highZQb嘉泰姆
efficiency over full load current range. It operates at aZQb嘉泰姆
fixed switching frequency of 1.2MHz, and uses theZQb嘉泰姆
slope compensated peak current mode pulse widthZQb嘉泰姆
modulation (PWM) architecture. The device canZQb嘉泰姆
operate with an input voltage below 1V and theZQb嘉泰姆
minimum start-up voltage is 0.85V.ZQb嘉泰姆
2) Current Mode Operation ZQb嘉泰姆
The CXSU63034 is based on a slope compensated peakZQb嘉泰姆
current mode PWM control topology. It operates at aZQb嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachZQb嘉泰姆
clock cycle, the main switch (NMOS) is turned on andZQb嘉泰姆
the inductor current starts to ramp. After the maximumZQb嘉泰姆
duty cycle or the sense current signal equals the errorZQb嘉泰姆
amplifier output, the main switch is turned off and theZQb嘉泰姆
synchronous switch (PMOS) is turned on. This controlZQb嘉泰姆
topology features cycle-by-cycle current limiting whichZQb嘉泰姆
can prevent the main switch from overstress and theZQb嘉泰姆
external inductor from saturating.ZQb嘉泰姆
3) Synchronous Rectification ZQb嘉泰姆
The CXSU63034 integrates a synchronous rectifier toZQb嘉泰姆
improve efficiency as well as to eliminate the need forZQb嘉泰姆
an external Schottky diode. The synchronous rectifier isZQb嘉泰姆
used to reduce the loss condition contributed by theZQb嘉泰姆
forward voltage of an external Schottky diode. TheZQb嘉泰姆
synchronous rectifier is realized by a P-channel MOSZQb嘉泰姆
(PMOS) with gate control circuitry that incorporatesZQb嘉泰姆
八,相关芯片选择指南           更多同类产品........    ZQb嘉泰姆

ZQb嘉泰姆

◀ Previous:800mA, 1.5MHz Micropower Synchronous Boost Converter in ThinSOT CXSU63033A is a synchronous, fixed frequency, step-up DC/DC converters delivering high efficiency in a 6 -lead ThinSOT package

Back to top

Next▶:CXSU63035 compact, high-efficiency, synchronous step-up converter with power MOSFETs integrated for a single-cell Li-ion/polymer battery. This converter consumes only 100uA quiescent current w