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目录ehE嘉泰姆

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

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一,产品概述(General Description)   ehE嘉泰姆

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

1.)Up to 95% EfficiencyehE嘉泰姆
2.)Current mode operation for excellent line and loadehE嘉泰姆
     transient responseehE嘉泰姆
3)Low quiescent current: 230 UAehE嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.35ehE嘉泰姆
5)Output voltage 5.5V 0.6VehE嘉泰姆
6)Automatic PWM/PFM mode switchingehE嘉泰姆
7)No Schottky diode requiredehE嘉泰姆
8)1.4MHz fixed frequency switchingehE嘉泰姆
9)Short-Circuit protectionehE嘉泰姆
10)Shutdown quiescent current: < 1 UAehE嘉泰姆
11)Low profile SOT-23-5 package (lead-freeehE嘉泰姆
12)packaging is now available)ehE嘉泰姆
三,应用范围 (Applications)ehE嘉泰姆
Digital cameras and MP3ehE嘉泰姆
Palmtop computers / PDAsehE嘉泰姆
Cellular phonesehE嘉泰姆
Wireless handsets and DSL modemsehE嘉泰姆
PC cardsehE嘉泰姆
Portable media playersehE嘉泰姆
四.下载产品资料PDF文档ehE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！ehE嘉泰姆

 ehE嘉泰姆

五,产品封装图 (Package)ehE嘉泰姆

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六.电路原理图ehE嘉泰姆

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七,功能概述ehE嘉泰姆

INDUCTOR SELECTIONehE嘉泰姆

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

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

price vs size requirements and any radiated field/EMI requirements than on what the CXSD61036ehE嘉泰姆

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

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