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目录HFb嘉泰姆

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

 HFb嘉泰姆

一,产品概述(General Description)   HFb嘉泰姆

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

1.)Up to 95% EfficiencyHFb嘉泰姆
2.)Current mode operation for excellent line and loadHFb嘉泰姆
     transient responseHFb嘉泰姆
3)Low quiescent current: 230 UAHFb嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.35HFb嘉泰姆
5)Output voltage 5.5V 0.6VHFb嘉泰姆
6)Automatic PWM/PFM mode switchingHFb嘉泰姆
7)No Schottky diode requiredHFb嘉泰姆
8)1.4MHz fixed frequency switchingHFb嘉泰姆
9)Short-Circuit protectionHFb嘉泰姆
10)Shutdown quiescent current: < 1 UAHFb嘉泰姆
11)Low profile SOT-23-5 package (lead-freeHFb嘉泰姆
12)packaging is now available)HFb嘉泰姆
三,应用范围 (Applications)HFb嘉泰姆
Digital cameras and MP3HFb嘉泰姆
Palmtop computers / PDAsHFb嘉泰姆
Cellular phonesHFb嘉泰姆
Wireless handsets and DSL modemsHFb嘉泰姆
PC cardsHFb嘉泰姆
Portable media playersHFb嘉泰姆
四.下载产品资料PDF文档HFb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！HFb嘉泰姆

 HFb嘉泰姆

五,产品封装图 (Package)HFb嘉泰姆

HFb嘉泰姆

六.电路原理图HFb嘉泰姆

HFb嘉泰姆
HFb嘉泰姆
七,功能概述HFb嘉泰姆

INDUCTOR SELECTIONHFb嘉泰姆

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

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

price vs size requirements and any radiated field/EMI requirements than on what the CXSD61036HFb嘉泰姆

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

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