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目录kRs嘉泰姆

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

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一,产品概述(General Description)   kRs嘉泰姆

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

1.)Up to 95% EfficiencykRs嘉泰姆
2.)Current mode operation for excellent line and loadkRs嘉泰姆
     transient responsekRs嘉泰姆
3)Low quiescent current: 230 UAkRs嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.35kRs嘉泰姆
5)Output voltage 5.5V 0.6VkRs嘉泰姆
6)Automatic PWM/PFM mode switchingkRs嘉泰姆
7)No Schottky diode requiredkRs嘉泰姆
8)1.4MHz fixed frequency switchingkRs嘉泰姆
9)Short-Circuit protectionkRs嘉泰姆
10)Shutdown quiescent current: < 1 UAkRs嘉泰姆
11)Low profile SOT-23-5 package (lead-freekRs嘉泰姆
12)packaging is now available)kRs嘉泰姆
三,应用范围 (Applications)kRs嘉泰姆
Digital cameras and MP3kRs嘉泰姆
Palmtop computers / PDAskRs嘉泰姆
Cellular phoneskRs嘉泰姆
Wireless handsets and DSL modemskRs嘉泰姆
PC cardskRs嘉泰姆
Portable media playerskRs嘉泰姆
四.下载产品资料PDF文档kRs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！kRs嘉泰姆

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五,产品封装图 (Package)kRs嘉泰姆

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六.电路原理图kRs嘉泰姆

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七,功能概述kRs嘉泰姆

INDUCTOR SELECTIONkRs嘉泰姆

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

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

price vs size requirements and any radiated field/EMI requirements than on what the CXSD61036kRs嘉泰姆

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

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