目录6a6嘉泰姆

1.产品概述                       2.产品特点6a6嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 6a6嘉泰姆
5.产品封装图                     6.电路原理图                   6a6嘉泰姆
7.功能概述                        8.相关产品6a6嘉泰姆

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一,产品概述(General Description)   6a6嘉泰姆

    The CXSD61036 is high efficiency synchronous,PWM step-down6a6嘉泰姆
DC/DC converters working under an input voltage6a6嘉泰姆
range of 2.5V to 5.5V. This feature makes the CXSD61036 suitable6a6嘉泰姆
for single Li-lon battery-powered applications.100% duty cycle6a6嘉泰姆
capability extends battery life in portable devices, while the quiescent6a6嘉泰姆
current is 200 A with no load, and drops to < 1 A in shutdown.6a6嘉泰姆
       The internal synchronous switch is  desired to increase efficiency6a6嘉泰姆
without an external Schottky diode. The 1.4 MHz fixed switching6a6嘉泰姆
frequency allows the using of tiny,low profile inductors and ceramic6a6嘉泰姆
capacitors,which minimized overall solution footprint6a6嘉泰姆
        The CXSD61036 converters are available in the industry standard6a6嘉泰姆
SOT-23-5 power packages (or upon request)6a6嘉泰姆
二.产品特点(Features)6a6嘉泰姆

1.)Up to 95% Efficiency6a6嘉泰姆
2.)Current mode operation for excellent line and load6a6嘉泰姆
     transient response6a6嘉泰姆
3)Low quiescent current: 230 UA6a6嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.356a6嘉泰姆
5)Output voltage 5.5V 0.6V6a6嘉泰姆
6)Automatic PWM/PFM mode switching6a6嘉泰姆
7)No Schottky diode required6a6嘉泰姆
8)1.4MHz fixed frequency switching6a6嘉泰姆
9)Short-Circuit protection6a6嘉泰姆
10)Shutdown quiescent current: < 1 UA6a6嘉泰姆
11)Low profile SOT-23-5 package (lead-free6a6嘉泰姆
12)packaging is now available)6a6嘉泰姆
三,应用范围 (Applications)6a6嘉泰姆
Digital cameras and MP36a6嘉泰姆
Palmtop computers / PDAs6a6嘉泰姆
Cellular phones6a6嘉泰姆
Wireless handsets and DSL modems6a6嘉泰姆
PC cards6a6嘉泰姆
Portable media players6a6嘉泰姆
四.下载产品资料PDF文档6a6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！6a6嘉泰姆

 6a6嘉泰姆

五,产品封装图 (Package)6a6嘉泰姆

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六.电路原理图6a6嘉泰姆

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七,功能概述6a6嘉泰姆

INDUCTOR SELECTION6a6嘉泰姆

For most applications, the value of the inductor will fall in the range of 1μH to 4.7μH. Its value is6a6嘉泰姆
chosen based on the desired ripple current. Large value inductors lower ripple current and small6a6嘉泰姆
value inductors result in higher ripple currents. Higher VIN or VOUT also increases the ripple6a6嘉泰姆

current as shown in equation 1. A reasonable starting point for setting ripple current is
IL =240mA (40% of 600mA).6a6嘉泰姆
The DC current rating of the inductor should be at least equal to the maximum load current plus6a6嘉泰姆
half the ripple current to prevent core saturation. Thus, a 720mA rated inductor should be6a6嘉泰姆
enough for most applications (600mA + 120mA). For better efficiency, choose a low DC-resistance6a6嘉泰姆
inductor.6a6嘉泰姆
Different core materials and shapes will change the size/current and price/current relationship of6a6嘉泰姆
an inductor. Toroid or shielded pot cores in ferrite or permalloy materials are small and don’t6a6嘉泰姆
radiate much energy, but generally cost more than powdered iron core inductors with similar6a6嘉泰姆
electrical characteristics. The choice of which style inductor to use often depends more on the6a6嘉泰姆

price vs size requirements and any radiated field/EMI requirements than on what the CXSD610366a6嘉泰姆

requires to operate. Table 1 shows some typical surface mount inductors that work well in6a6嘉泰姆
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