• "

样品申请

目录6Tt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） 6Tt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6Tt嘉泰姆

 6Tt嘉泰姆

一,产品概述(General Description)      6Tt嘉泰姆
6Tt嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-up6Tt嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. Power6Tt嘉泰姆
dissipation during operation is only 40μA typical and drops to less than6Tt嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU630346Tt嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltage6Tt嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency at6Tt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 and6Tt嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.6Tt嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effect6Tt嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.6Tt嘉泰姆
二.产品特点(Features)6Tt嘉泰姆
6Tt嘉泰姆
Input Voltage Operating Range: 0.85V to 5V6Tt嘉泰姆
Voltage Output Range: 2.5V to 5.5V6Tt嘉泰姆
Efficiency Up to 94%6Tt嘉泰姆
3.3V/100mA Output at 1.0V Input6Tt嘉泰姆
5V/700mA Output at 3.6V Input6Tt嘉泰姆
Low Start-up Voltage: 0.85V Typical6Tt嘉泰姆
1.2MHz Constant Frequency Operation6Tt嘉泰姆
Internal Synchronous Rectifier6Tt嘉泰姆
EMI Reduction Anti-Ring Control Circuitry6Tt嘉泰姆
Low Shutdown Current: < 1.0uA6Tt嘉泰姆
Over Current Protection6Tt嘉泰姆
Over Temperature Protection6Tt嘉泰姆
Light Load PFM Mode Operation6Tt嘉泰姆
SOT23-6 Package6Tt嘉泰姆
三,应用范围 (Applications)6Tt嘉泰姆
6Tt嘉泰姆

 Li-ion Battery Charger6Tt嘉泰姆

 TYPICAL APPLICATIONS
USB Audio6Tt嘉泰姆
Wireless Mouse6Tt嘉泰姆
Digital Still Cameras6Tt嘉泰姆
MP3/MP4 Players6Tt嘉泰姆
Portable Instruments6Tt嘉泰姆
四.技术规格书下载（产品PDF）6Tt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！6Tt嘉泰姆

 6Tt嘉泰姆

五,产品封装图 (Package)6Tt嘉泰姆
6Tt嘉泰姆
6Tt嘉泰姆

六.电路原理图6Tt嘉泰姆
6Tt嘉泰姆
6Tt嘉泰姆
七,功能概述6Tt嘉泰姆
6Tt嘉泰姆
1)General Description6Tt嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.6Tt嘉泰姆
It utilizes internal MOSFET switches to achieve high6Tt嘉泰姆
efficiency over full load current range. It operates at a6Tt嘉泰姆
fixed switching frequency of 1.2MHz, and uses the6Tt嘉泰姆
slope compensated peak current mode pulse width6Tt嘉泰姆
modulation (PWM) architecture. The device can6Tt嘉泰姆
operate with an input voltage below 1V and the6Tt嘉泰姆
minimum start-up voltage is 0.85V.6Tt嘉泰姆
2) Current Mode Operation 6Tt嘉泰姆
The CXSU63034 is based on a slope compensated peak6Tt嘉泰姆
current mode PWM control topology. It operates at a6Tt嘉泰姆
fixed frequency of 1.2MHz. At the beginning of each6Tt嘉泰姆
clock cycle, the main switch (NMOS) is turned on and6Tt嘉泰姆
the inductor current starts to ramp. After the maximum6Tt嘉泰姆
duty cycle or the sense current signal equals the error6Tt嘉泰姆
amplifier output, the main switch is turned off and the6Tt嘉泰姆
synchronous switch (PMOS) is turned on. This control6Tt嘉泰姆
topology features cycle-by-cycle current limiting which6Tt嘉泰姆
can prevent the main switch from overstress and the6Tt嘉泰姆
external inductor from saturating.6Tt嘉泰姆
3) Synchronous Rectification 6Tt嘉泰姆
The CXSU63034 integrates a synchronous rectifier to6Tt嘉泰姆
improve efficiency as well as to eliminate the need for6Tt嘉泰姆
an external Schottky diode. The synchronous rectifier is6Tt嘉泰姆
used to reduce the loss condition contributed by the6Tt嘉泰姆
forward voltage of an external Schottky diode. The6Tt嘉泰姆
synchronous rectifier is realized by a P-channel MOS6Tt嘉泰姆
(PMOS) with gate control circuitry that incorporates6Tt嘉泰姆
八,相关芯片选择指南           更多同类产品........    6Tt嘉泰姆

6Tt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