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

目录yYI嘉泰姆

1.产品概述                       2.产品特点yYI嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 yYI嘉泰姆
5.产品封装图                     6.电路原理图                   yYI嘉泰姆
7.功能概述                        8.相关产品yYI嘉泰姆

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一,产品概述(General Description)         yYI嘉泰姆
         The CXSU63035 is a compact, high-efficiency, synchronous step-up converter with power MOSFETs integrated for a single-cell Li-ion/polymer battery. This converteryYI嘉泰姆
consumes only 100uA quiescent current when no switching. When current load is light, this converter enters burst mode to obtain high efficiency. When current load isyYI嘉泰姆
heavy enough, it enters fixed-frequency PWM mode. It adopts peak current mode for fast transient response with internal compensation. This converter contains  cycle-by-cycle current limiting and short protection circuit. It is suitable for iPad-like computers, smart phones and portable handheld devices. The device is packed in ESOP8 package.yYI嘉泰姆
二.产品特点(Features)yYI嘉泰姆
·Wide input range: 2.6-5V input, 2.0A @5V VoutyYI嘉泰姆
· 1MHz switching frequencyyYI嘉泰姆
· Low RDS(ON): 110mΩ@5V NMOS and 150mΩ@5V PMOSyYI嘉泰姆
· Up to 93% efficiencyyYI嘉泰姆
· Accurate Reference: 0.6V ReferenceyYI嘉泰姆
· Under-Voltage lockout ProtectionyYI嘉泰姆
  Over-Temperature Protection Short ProtectionyYI嘉泰姆
· Internal Soft StartyYI嘉泰姆
· 1uA Shutdown currentyYI嘉泰姆
· RoHS Compliant and Halogen FreeyYI嘉泰姆
· Compact package: ESOP8yYI嘉泰姆
三,应用范围 (Applications)yYI嘉泰姆
IPad- like tablet computersyYI嘉泰姆
Smart phonesyYI嘉泰姆
Other portable devicesyYI嘉泰姆
四.下载产品资料PDF文档 yYI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！yYI嘉泰姆

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五,产品封装图 (Package)yYI嘉泰姆
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六.电路原理图yYI嘉泰姆
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七,功能概述yYI嘉泰姆

UnderVoltage LockoutyYI嘉泰姆

An under voltage lockout function prevents device start-up if the supply voltage on VBAT is lower thanyYI嘉泰姆
approximately 2.8V. When in operation and the battery is being discharged, the device automatically enters theyYI嘉泰姆
shutdown mode if the voltage on VBAT drops below approximately 2.5V. This under voltage lockout function isyYI嘉泰姆
implemented in order to prevent the malfunctioning of the converter. yYI嘉泰姆
SoftStartyYI嘉泰姆
When the device enables the internal start-up cycle, it starts with the first step, the precharge phase. DuringyYI嘉泰姆
precharge, the rectifying switch is turned on until the output capacitor is charged to a value close to the inputyYI嘉泰姆
voltage. The rectifying switch current is limited in that phase. This also limits the output current underyYI嘉泰姆
short-circuit conditions at the output. After charging the output capacitor to the input voltage the device startsyYI嘉泰姆
switching.yYI嘉泰姆

Application InformationyYI嘉泰姆

Because of the high integration in the CXSU63035, the application circuit based on this regulator IC is ratheryYI嘉泰姆
simple. Only input capacitor CIN, output capacitor COUT, inductor L and feedback resistors (R1 and R2) need toyYI嘉泰姆
be selected for the targeted applications specifications.yYI嘉泰姆
Feedback resistor dividers R1 and R2:yYI嘉泰姆
Choose R1 and R2 to program the proper output voltage. To minimize the power consumption under light loads,yYI嘉泰姆
it is desirable to choose large resistance values for both R1 and R 2. A value of between 10k and 1M isyYI嘉泰姆
recommended for both resistors. If R1=200k is chosen, then R2 can be calculated to be:yYI嘉泰姆
R2 = (R1×0.6V)/(VOUT - 0.6V)yYI嘉泰姆
Input capacitor CIN:yYI嘉泰姆
To minimize the potential noise problem, place a typical X5R or better grade ceramic capacitor really close toyYI嘉泰姆
the IN and GND pins. Care should be taken to minimize the loop area formed by CIN, and IN/GND pins. In thisyYI嘉泰姆
case a 10uF low ESR ceramic is recommended.yYI嘉泰姆
Output capacitor COUT:yYI嘉泰姆
The output capacitor is selected to handle the output ripple noise requirements. Both steady state ripple andyYI嘉泰姆
transient requirements must be taken into consideration when selecting this capacitor. For the best performance,yYI嘉泰姆
it is recommended to use X5R or better grade ceramic capacitor with 10V rating and more than two pcs 22uFyYI嘉泰姆
Capacitor.yYI嘉泰姆
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