CXSD61036 high efficiency synchronous PWM step-down DC converters working under an input voltage ran

目录QuI嘉泰姆

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

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一,产品概述(General Description)   QuI嘉泰姆

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

1.)Up to 95% EfficiencyQuI嘉泰姆
2.)Current mode operation for excellent line and loadQuI嘉泰姆
     transient responseQuI嘉泰姆
3)Low quiescent current: 230 UAQuI嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.35QuI嘉泰姆
5)Output voltage 5.5V 0.6VQuI嘉泰姆
6)Automatic PWM/PFM mode switchingQuI嘉泰姆
7)No Schottky diode requiredQuI嘉泰姆
8)1.4MHz fixed frequency switchingQuI嘉泰姆
9)Short-Circuit protectionQuI嘉泰姆
10)Shutdown quiescent current: < 1 UAQuI嘉泰姆
11)Low profile SOT-23-5 package (lead-freeQuI嘉泰姆
12)packaging is now available)QuI嘉泰姆
三,应用范围 (Applications)QuI嘉泰姆
Digital cameras and MP3QuI嘉泰姆
Palmtop computers / PDAsQuI嘉泰姆
Cellular phonesQuI嘉泰姆
Wireless handsets and DSL modemsQuI嘉泰姆
PC cardsQuI嘉泰姆
Portable media playersQuI嘉泰姆
四.下载产品资料PDF文档QuI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！QuI嘉泰姆

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五,产品封装图 (Package)QuI嘉泰姆

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六.电路原理图QuI嘉泰姆

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七,功能概述QuI嘉泰姆

INDUCTOR SELECTIONQuI嘉泰姆

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

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

price vs size requirements and any radiated field/EMI requirements than on what the CXSD61036QuI嘉泰姆

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