目录pNF嘉泰姆

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

 pNF嘉泰姆

一,产品概述(General Description)         pNF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 converterpNF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 ispNF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.pNF嘉泰姆
二.产品特点(Features)pNF嘉泰姆
·Wide input range: 2.6-5V input, 2.0A @5V VoutpNF嘉泰姆
· 1MHz switching frequencypNF嘉泰姆
· Low RDS(ON): 110mΩ@5V NMOS and 150mΩ@5V PMOSpNF嘉泰姆
· Up to 93% efficiencypNF嘉泰姆
· Accurate Reference: 0.6V ReferencepNF嘉泰姆
· Under-Voltage lockout ProtectionpNF嘉泰姆
  Over-Temperature Protection Short ProtectionpNF嘉泰姆
· Internal Soft StartpNF嘉泰姆
· 1uA Shutdown currentpNF嘉泰姆
· RoHS Compliant and Halogen FreepNF嘉泰姆
· Compact package: ESOP8pNF嘉泰姆
三,应用范围 (Applications)pNF嘉泰姆
IPad- like tablet computerspNF嘉泰姆
Smart phonespNF嘉泰姆
Other portable devicespNF嘉泰姆
四.下载产品资料PDF文档 pNF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！pNF嘉泰姆

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

UnderVoltage LockoutpNF嘉泰姆

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

Application InformationpNF嘉泰姆

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