• [ 产品资料下载 ]

样品申请

目录Nfn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） Nfn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Nfn嘉泰姆

 Nfn嘉泰姆

一,产品概述(General Description)      Nfn嘉泰姆
Nfn嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-upNfn嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. PowerNfn嘉泰姆
dissipation during operation is only 40μA typical and drops to less thanNfn嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU63034Nfn嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltageNfn嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency atNfn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 andNfn嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.Nfn嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effectNfn嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.Nfn嘉泰姆
二.产品特点(Features)Nfn嘉泰姆
Nfn嘉泰姆
Input Voltage Operating Range: 0.85V to 5VNfn嘉泰姆
Voltage Output Range: 2.5V to 5.5VNfn嘉泰姆
Efficiency Up to 94%Nfn嘉泰姆
3.3V/100mA Output at 1.0V InputNfn嘉泰姆
5V/700mA Output at 3.6V InputNfn嘉泰姆
Low Start-up Voltage: 0.85V TypicalNfn嘉泰姆
1.2MHz Constant Frequency OperationNfn嘉泰姆
Internal Synchronous RectifierNfn嘉泰姆
EMI Reduction Anti-Ring Control CircuitryNfn嘉泰姆
Low Shutdown Current: < 1.0uANfn嘉泰姆
Over Current ProtectionNfn嘉泰姆
Over Temperature ProtectionNfn嘉泰姆
Light Load PFM Mode OperationNfn嘉泰姆
SOT23-6 PackageNfn嘉泰姆
三,应用范围 (Applications)Nfn嘉泰姆
Nfn嘉泰姆

 Li-ion Battery ChargerNfn嘉泰姆

 TYPICAL APPLICATIONS
USB AudioNfn嘉泰姆
Wireless MouseNfn嘉泰姆
Digital Still CamerasNfn嘉泰姆
MP3/MP4 PlayersNfn嘉泰姆
Portable InstrumentsNfn嘉泰姆
四.技术规格书下载（产品PDF）Nfn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！Nfn嘉泰姆

 Nfn嘉泰姆

五,产品封装图 (Package)Nfn嘉泰姆
Nfn嘉泰姆
Nfn嘉泰姆

六.电路原理图Nfn嘉泰姆
Nfn嘉泰姆
Nfn嘉泰姆
七,功能概述Nfn嘉泰姆
Nfn嘉泰姆
1)General DescriptionNfn嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.Nfn嘉泰姆
It utilizes internal MOSFET switches to achieve highNfn嘉泰姆
efficiency over full load current range. It operates at aNfn嘉泰姆
fixed switching frequency of 1.2MHz, and uses theNfn嘉泰姆
slope compensated peak current mode pulse widthNfn嘉泰姆
modulation (PWM) architecture. The device canNfn嘉泰姆
operate with an input voltage below 1V and theNfn嘉泰姆
minimum start-up voltage is 0.85V.Nfn嘉泰姆
2) Current Mode Operation Nfn嘉泰姆
The CXSU63034 is based on a slope compensated peakNfn嘉泰姆
current mode PWM control topology. It operates at aNfn嘉泰姆
fixed frequency of 1.2MHz. At the beginning of eachNfn嘉泰姆
clock cycle, the main switch (NMOS) is turned on andNfn嘉泰姆
the inductor current starts to ramp. After the maximumNfn嘉泰姆
duty cycle or the sense current signal equals the errorNfn嘉泰姆
amplifier output, the main switch is turned off and theNfn嘉泰姆
synchronous switch (PMOS) is turned on. This controlNfn嘉泰姆
topology features cycle-by-cycle current limiting whichNfn嘉泰姆
can prevent the main switch from overstress and theNfn嘉泰姆
external inductor from saturating.Nfn嘉泰姆
3) Synchronous Rectification Nfn嘉泰姆
The CXSU63034 integrates a synchronous rectifier toNfn嘉泰姆
improve efficiency as well as to eliminate the need forNfn嘉泰姆
an external Schottky diode. The synchronous rectifier isNfn嘉泰姆
used to reduce the loss condition contributed by theNfn嘉泰姆
forward voltage of an external Schottky diode. TheNfn嘉泰姆
synchronous rectifier is realized by a P-channel MOSNfn嘉泰姆
(PMOS) with gate control circuitry that incorporatesNfn嘉泰姆
八,相关芯片选择指南           更多同类产品........    Nfn嘉泰姆

Nfn嘉泰姆

◀ 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

返回顶部

下一篇▶:1MHz开关频率CXSU63035紧凑高效同步升压转换器与功率mosfet集成用于单电池锂离子/聚合物电池内部软启动

共有条评论 用户名: 密码: 验证码: 匿名发表