目录5IK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） 5IK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5IK嘉泰姆

 5IK嘉泰姆

一,产品概述(General Description)      5IK嘉泰姆
5IK嘉泰姆
     The CXSU63034 is a highly efficient fix frequencysynchronous step-up5IK嘉泰姆
DC/DC converter. Output voltage of the device is adjustable. Power5IK嘉泰姆
dissipation during operation is only 40μA typical and drops to less than5IK嘉泰姆
1μA in shutdown. The 0.85V to 5V input voltage range makes the CXSU630345IK嘉泰姆
ideally suitable for single cell Li-ion battery, single or dual AA battery voltage5IK嘉泰姆
step-up applications. Automatic PFM Mode operation increases efficiency at5IK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 and5IK嘉泰姆
output capacitors. The internal synchronous switchesenhance efficiency.5IK嘉泰姆
Anti-ringing control circuitry reduces EMI by damping the inductance effect5IK嘉泰姆
in DCM mode. The CXSU63034 is available in SOT23-6 package.5IK嘉泰姆
二.产品特点(Features)5IK嘉泰姆
5IK嘉泰姆
Input Voltage Operating Range: 0.85V to 5V5IK嘉泰姆
Voltage Output Range: 2.5V to 5.5V5IK嘉泰姆
Efficiency Up to 94%5IK嘉泰姆
3.3V/100mA Output at 1.0V Input5IK嘉泰姆
5V/700mA Output at 3.6V Input5IK嘉泰姆
Low Start-up Voltage: 0.85V Typical5IK嘉泰姆
1.2MHz Constant Frequency Operation5IK嘉泰姆
Internal Synchronous Rectifier5IK嘉泰姆
EMI Reduction Anti-Ring Control Circuitry5IK嘉泰姆
Low Shutdown Current: < 1.0uA5IK嘉泰姆
Over Current Protection5IK嘉泰姆
Over Temperature Protection5IK嘉泰姆
Light Load PFM Mode Operation5IK嘉泰姆
SOT23-6 Package5IK嘉泰姆
三,应用范围 (Applications)5IK嘉泰姆
5IK嘉泰姆

 Li-ion Battery Charger5IK嘉泰姆

 TYPICAL APPLICATIONS
USB Audio5IK嘉泰姆
Wireless Mouse5IK嘉泰姆
Digital Still Cameras5IK嘉泰姆
MP3/MP4 Players5IK嘉泰姆
Portable Instruments5IK嘉泰姆
四.技术规格书下载（产品PDF）5IK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！5IK嘉泰姆

 5IK嘉泰姆

五,产品封装图 (Package)5IK嘉泰姆
5IK嘉泰姆
5IK嘉泰姆

六.电路原理图5IK嘉泰姆
5IK嘉泰姆
5IK嘉泰姆
七,功能概述5IK嘉泰姆
5IK嘉泰姆
1)General Description5IK嘉泰姆
The CXSU63034 is a synchronous step-up DC-DC converter.5IK嘉泰姆
It utilizes internal MOSFET switches to achieve high5IK嘉泰姆
efficiency over full load current range. It operates at a5IK嘉泰姆
fixed switching frequency of 1.2MHz, and uses the5IK嘉泰姆
slope compensated peak current mode pulse width5IK嘉泰姆
modulation (PWM) architecture. The device can5IK嘉泰姆
operate with an input voltage below 1V and the5IK嘉泰姆
minimum start-up voltage is 0.85V.5IK嘉泰姆
2) Current Mode Operation 5IK嘉泰姆
The CXSU63034 is based on a slope compensated peak5IK嘉泰姆
current mode PWM control topology. It operates at a5IK嘉泰姆
fixed frequency of 1.2MHz. At the beginning of each5IK嘉泰姆
clock cycle, the main switch (NMOS) is turned on and5IK嘉泰姆
the inductor current starts to ramp. After the maximum5IK嘉泰姆
duty cycle or the sense current signal equals the error5IK嘉泰姆
amplifier output, the main switch is turned off and the5IK嘉泰姆
synchronous switch (PMOS) is turned on. This control5IK嘉泰姆
topology features cycle-by-cycle current limiting which5IK嘉泰姆
can prevent the main switch from overstress and the5IK嘉泰姆
external inductor from saturating.5IK嘉泰姆
3) Synchronous Rectification 5IK嘉泰姆
The CXSU63034 integrates a synchronous rectifier to5IK嘉泰姆
improve efficiency as well as to eliminate the need for5IK嘉泰姆
an external Schottky diode. The synchronous rectifier is5IK嘉泰姆
used to reduce the loss condition contributed by the5IK嘉泰姆
forward voltage of an external Schottky diode. The5IK嘉泰姆
synchronous rectifier is realized by a P-channel MOS5IK嘉泰姆
(PMOS) with gate control circuitry that incorporates5IK嘉泰姆
八,相关芯片选择指南           更多同类产品........    5IK嘉泰姆

5IK嘉泰姆