目录nB4嘉泰姆

1.产品概述                       2.产品特点nB4嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 nB4嘉泰姆
5.产品封装图                     6.电路原理图                   nB4嘉泰姆
7.功能概述                        8.相关产品nB4嘉泰姆

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一,产品概述(General Description)   nB4嘉泰姆

    The CXSD61036 is high efficiency synchronous,PWM step-downnB4嘉泰姆
DC/DC converters working under an input voltagenB4嘉泰姆
range of 2.5V to 5.5V. This feature makes the CXSD61036 suitablenB4嘉泰姆
for single Li-lon battery-powered applications.100% duty cyclenB4嘉泰姆
capability extends battery life in portable devices, while the quiescentnB4嘉泰姆
current is 200 A with no load, and drops to < 1 A in shutdown.nB4嘉泰姆
       The internal synchronous switch is  desired to increase efficiencynB4嘉泰姆
without an external Schottky diode. The 1.4 MHz fixed switchingnB4嘉泰姆
frequency allows the using of tiny,low profile inductors and ceramicnB4嘉泰姆
capacitors,which minimized overall solution footprintnB4嘉泰姆
        The CXSD61036 converters are available in the industry standardnB4嘉泰姆
SOT-23-5 power packages (or upon request)nB4嘉泰姆
二.产品特点(Features)nB4嘉泰姆

1.)Up to 95% EfficiencynB4嘉泰姆
2.)Current mode operation for excellent line and loadnB4嘉泰姆
     transient responsenB4嘉泰姆
3)Low quiescent current: 230 UAnB4嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.35nB4嘉泰姆
5)Output voltage 5.5V 0.6VnB4嘉泰姆
6)Automatic PWM/PFM mode switchingnB4嘉泰姆
7)No Schottky diode requirednB4嘉泰姆
8)1.4MHz fixed frequency switchingnB4嘉泰姆
9)Short-Circuit protectionnB4嘉泰姆
10)Shutdown quiescent current: < 1 UAnB4嘉泰姆
11)Low profile SOT-23-5 package (lead-freenB4嘉泰姆
12)packaging is now available)nB4嘉泰姆
三,应用范围 (Applications)nB4嘉泰姆
Digital cameras and MP3nB4嘉泰姆
Palmtop computers / PDAsnB4嘉泰姆
Cellular phonesnB4嘉泰姆
Wireless handsets and DSL modemsnB4嘉泰姆
PC cardsnB4嘉泰姆
Portable media playersnB4嘉泰姆
四.下载产品资料PDF文档nB4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！nB4嘉泰姆

 nB4嘉泰姆

五,产品封装图 (Package)nB4嘉泰姆

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六.电路原理图nB4嘉泰姆

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七,功能概述nB4嘉泰姆

INDUCTOR SELECTIONnB4嘉泰姆

For most applications, the value of the inductor will fall in the range of 1μH to 4.7μH. Its value isnB4嘉泰姆
chosen based on the desired ripple current. Large value inductors lower ripple current and smallnB4嘉泰姆
value inductors result in higher ripple currents. Higher VIN or VOUT also increases the ripplenB4嘉泰姆

current as shown in equation 1. A reasonable starting point for setting ripple current is
IL =240mA (40% of 600mA).nB4嘉泰姆
The DC current rating of the inductor should be at least equal to the maximum load current plusnB4嘉泰姆
half the ripple current to prevent core saturation. Thus, a 720mA rated inductor should benB4嘉泰姆
enough for most applications (600mA + 120mA). For better efficiency, choose a low DC-resistancenB4嘉泰姆
inductor.nB4嘉泰姆
Different core materials and shapes will change the size/current and price/current relationship ofnB4嘉泰姆
an inductor. Toroid or shielded pot cores in ferrite or permalloy materials are small and don’tnB4嘉泰姆
radiate much energy, but generally cost more than powdered iron core inductors with similarnB4嘉泰姆
electrical characteristics. The choice of which style inductor to use often depends more on thenB4嘉泰姆

price vs size requirements and any radiated field/EMI requirements than on what the CXSD61036nB4嘉泰姆

requires to operate. Table 1 shows some typical surface mount inductors that work well innB4嘉泰姆
八,相关产品                 更多同类产品.......nB4嘉泰姆