目录cqf嘉泰姆

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

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一,产品概述(General Description)   cqf嘉泰姆

    The CXSD61036 is high efficiency synchronous,PWM step-downcqf嘉泰姆
DC/DC converters working under an input voltagecqf嘉泰姆
range of 2.5V to 5.5V. This feature makes the CXSD61036 suitablecqf嘉泰姆
for single Li-lon battery-powered applications.100% duty cyclecqf嘉泰姆
capability extends battery life in portable devices, while the quiescentcqf嘉泰姆
current is 200 A with no load, and drops to < 1 A in shutdown.cqf嘉泰姆
       The internal synchronous switch is  desired to increase efficiencycqf嘉泰姆
without an external Schottky diode. The 1.4 MHz fixed switchingcqf嘉泰姆
frequency allows the using of tiny,low profile inductors and ceramiccqf嘉泰姆
capacitors,which minimized overall solution footprintcqf嘉泰姆
        The CXSD61036 converters are available in the industry standardcqf嘉泰姆
SOT-23-5 power packages (or upon request)cqf嘉泰姆
二.产品特点(Features)cqf嘉泰姆

1.)Up to 95% Efficiencycqf嘉泰姆
2.)Current mode operation for excellent line and loadcqf嘉泰姆
     transient responsecqf嘉泰姆
3)Low quiescent current: 230 UAcqf嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.35cqf嘉泰姆
5)Output voltage 5.5V 0.6Vcqf嘉泰姆
6)Automatic PWM/PFM mode switchingcqf嘉泰姆
7)No Schottky diode requiredcqf嘉泰姆
8)1.4MHz fixed frequency switchingcqf嘉泰姆
9)Short-Circuit protectioncqf嘉泰姆
10)Shutdown quiescent current: < 1 UAcqf嘉泰姆
11)Low profile SOT-23-5 package (lead-freecqf嘉泰姆
12)packaging is now available)cqf嘉泰姆
三,应用范围 (Applications)cqf嘉泰姆
Digital cameras and MP3cqf嘉泰姆
Palmtop computers / PDAscqf嘉泰姆
Cellular phonescqf嘉泰姆
Wireless handsets and DSL modemscqf嘉泰姆
PC cardscqf嘉泰姆
Portable media playerscqf嘉泰姆
四.下载产品资料PDF文档cqf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！cqf嘉泰姆

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五,产品封装图 (Package)cqf嘉泰姆

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六.电路原理图cqf嘉泰姆

cqf嘉泰姆
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七,功能概述cqf嘉泰姆

INDUCTOR SELECTIONcqf嘉泰姆

For most applications, the value of the inductor will fall in the range of 1μH to 4.7μH. Its value iscqf嘉泰姆
chosen based on the desired ripple current. Large value inductors lower ripple current and smallcqf嘉泰姆
value inductors result in higher ripple currents. Higher VIN or VOUT also increases the ripplecqf嘉泰姆

current as shown in equation 1. A reasonable starting point for setting ripple current is
IL =240mA (40% of 600mA).cqf嘉泰姆
The DC current rating of the inductor should be at least equal to the maximum load current pluscqf嘉泰姆
half the ripple current to prevent core saturation. Thus, a 720mA rated inductor should becqf嘉泰姆
enough for most applications (600mA + 120mA). For better efficiency, choose a low DC-resistancecqf嘉泰姆
inductor.cqf嘉泰姆
Different core materials and shapes will change the size/current and price/current relationship ofcqf嘉泰姆
an inductor. Toroid or shielded pot cores in ferrite or permalloy materials are small and don’tcqf嘉泰姆
radiate much energy, but generally cost more than powdered iron core inductors with similarcqf嘉泰姆
electrical characteristics. The choice of which style inductor to use often depends more on thecqf嘉泰姆

price vs size requirements and any radiated field/EMI requirements than on what the CXSD61036cqf嘉泰姆

requires to operate. Table 1 shows some typical surface mount inductors that work well incqf嘉泰姆
八,相关产品                 更多同类产品.......cqf嘉泰姆