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W0J嘉泰姆

1.产品概述                       2.产品特点W0J嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 W0J嘉泰姆
5.产品封装图                     6.电路原理图                   W0J嘉泰姆
7.功能概述                        8.相关产品W0J嘉泰姆

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一,产品概述(General Description)         W0J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 converterW0J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 isW0J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.W0J嘉泰姆
二.产品特点(Features)W0J嘉泰姆
·Wide input range: 2.6-5V input, 2.0A @5V VoutW0J嘉泰姆
· 1MHz switching frequencyW0J嘉泰姆
· Low RDS(ON): 110mΩ@5V NMOS and 150mΩ@5V PMOSW0J嘉泰姆
· Up to 93% efficiencyW0J嘉泰姆
· Accurate Reference: 0.6V ReferenceW0J嘉泰姆
· Under-Voltage lockout ProtectionW0J嘉泰姆
  Over-Temperature Protection Short ProtectionW0J嘉泰姆
· Internal Soft StartW0J嘉泰姆
· 1uA Shutdown currentW0J嘉泰姆
· RoHS Compliant and Halogen FreeW0J嘉泰姆
· Compact package: ESOP8W0J嘉泰姆
三,应用范围 (Applications)W0J嘉泰姆
IPad- like tablet computersW0J嘉泰姆
Smart phonesW0J嘉泰姆
Other portable devicesW0J嘉泰姆
四.下载产品资料PDF文档 W0J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！W0J嘉泰姆

 W0J嘉泰姆

五,产品封装图 (Package)W0J嘉泰姆
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六.电路原理图W0J嘉泰姆
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七,功能概述W0J嘉泰姆

UnderVoltage LockoutW0J嘉泰姆

An under voltage lockout function prevents device start-up if the supply voltage on VBAT is lower thanW0J嘉泰姆
approximately 2.8V. When in operation and the battery is being discharged, the device automatically enters theW0J嘉泰姆
shutdown mode if the voltage on VBAT drops below approximately 2.5V. This under voltage lockout function isW0J嘉泰姆
implemented in order to prevent the malfunctioning of the converter. W0J嘉泰姆
SoftStartW0J嘉泰姆
When the device enables the internal start-up cycle, it starts with the first step, the precharge phase. DuringW0J嘉泰姆
precharge, the rectifying switch is turned on until the output capacitor is charged to a value close to the inputW0J嘉泰姆
voltage. The rectifying switch current is limited in that phase. This also limits the output current underW0J嘉泰姆
short-circuit conditions at the output. After charging the output capacitor to the input voltage the device startsW0J嘉泰姆
switching.W0J嘉泰姆

Application InformationW0J嘉泰姆

Because of the high integration in the CXSU63035, the application circuit based on this regulator IC is ratherW0J嘉泰姆
simple. Only input capacitor CIN, output capacitor COUT, inductor L and feedback resistors (R1 and R2) need toW0J嘉泰姆
be selected for the targeted applications specifications.W0J嘉泰姆
Feedback resistor dividers R1 and R2:W0J嘉泰姆
Choose R1 and R2 to program the proper output voltage. To minimize the power consumption under light loads,W0J嘉泰姆
it is desirable to choose large resistance values for both R1 and R 2. A value of between 10k and 1M isW0J嘉泰姆
recommended for both resistors. If R1=200k is chosen, then R2 can be calculated to be:W0J嘉泰姆
R2 = (R1×0.6V)/(VOUT - 0.6V)W0J嘉泰姆
Input capacitor CIN:W0J嘉泰姆
To minimize the potential noise problem, place a typical X5R or better grade ceramic capacitor really close toW0J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 thisW0J嘉泰姆
case a 10uF low ESR ceramic is recommended.W0J嘉泰姆
Output capacitor COUT:W0J嘉泰姆
The output capacitor is selected to handle the output ripple noise requirements. Both steady state ripple andW0J嘉泰姆
transient requirements must be taken into consideration when selecting this capacitor. For the best performance,W0J嘉泰姆
it is recommended to use X5R or better grade ceramic capacitor with 10V rating and more than two pcs 22uFW0J嘉泰姆
Capacitor.W0J嘉泰姆
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