目录9mR嘉泰姆

1.产品概述                       2.产品特点9mR嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 9mR嘉泰姆
5.产品封装图                     6.电路原理图                   9mR嘉泰姆
7.功能概述                        8.相关产品9mR嘉泰姆

 9mR嘉泰姆

一,产品概述(General Description)   9mR嘉泰姆

    The CXSD61036 is high efficiency synchronous,PWM step-down9mR嘉泰姆
DC/DC converters working under an input voltage9mR嘉泰姆
range of 2.5V to 5.5V. This feature makes the CXSD61036 suitable9mR嘉泰姆
for single Li-lon battery-powered applications.100% duty cycle9mR嘉泰姆
capability extends battery life in portable devices, while the quiescent9mR嘉泰姆
current is 200 A with no load, and drops to < 1 A in shutdown.9mR嘉泰姆
       The internal synchronous switch is  desired to increase efficiency9mR嘉泰姆
without an external Schottky diode. The 1.4 MHz fixed switching9mR嘉泰姆
frequency allows the using of tiny,low profile inductors and ceramic9mR嘉泰姆
capacitors,which minimized overall solution footprint9mR嘉泰姆
        The CXSD61036 converters are available in the industry standard9mR嘉泰姆
SOT-23-5 power packages (or upon request)9mR嘉泰姆
二.产品特点(Features)9mR嘉泰姆

1.)Up to 95% Efficiency9mR嘉泰姆
2.)Current mode operation for excellent line and load9mR嘉泰姆
     transient response9mR嘉泰姆
3)Low quiescent current: 230 UA9mR嘉泰姆
4)Low Switch on Resistance RDS(ON),Internal Switch: 0.359mR嘉泰姆
5)Output voltage 5.5V 0.6V9mR嘉泰姆
6)Automatic PWM/PFM mode switching9mR嘉泰姆
7)No Schottky diode required9mR嘉泰姆
8)1.4MHz fixed frequency switching9mR嘉泰姆
9)Short-Circuit protection9mR嘉泰姆
10)Shutdown quiescent current: < 1 UA9mR嘉泰姆
11)Low profile SOT-23-5 package (lead-free9mR嘉泰姆
12)packaging is now available)9mR嘉泰姆
三,应用范围 (Applications)9mR嘉泰姆
Digital cameras and MP39mR嘉泰姆
Palmtop computers / PDAs9mR嘉泰姆
Cellular phones9mR嘉泰姆
Wireless handsets and DSL modems9mR嘉泰姆
PC cards9mR嘉泰姆
Portable media players9mR嘉泰姆
四.下载产品资料PDF文档9mR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！9mR嘉泰姆

 9mR嘉泰姆

五,产品封装图 (Package)9mR嘉泰姆

9mR嘉泰姆

六.电路原理图9mR嘉泰姆

9mR嘉泰姆
9mR嘉泰姆
七,功能概述9mR嘉泰姆

INDUCTOR SELECTION9mR嘉泰姆

For most applications, the value of the inductor will fall in the range of 1μH to 4.7μH. Its value is9mR嘉泰姆
chosen based on the desired ripple current. Large value inductors lower ripple current and small9mR嘉泰姆
value inductors result in higher ripple currents. Higher VIN or VOUT also increases the ripple9mR嘉泰姆

current as shown in equation 1. A reasonable starting point for setting ripple current is
IL =240mA (40% of 600mA).9mR嘉泰姆
The DC current rating of the inductor should be at least equal to the maximum load current plus9mR嘉泰姆
half the ripple current to prevent core saturation. Thus, a 720mA rated inductor should be9mR嘉泰姆
enough for most applications (600mA + 120mA). For better efficiency, choose a low DC-resistance9mR嘉泰姆
inductor.9mR嘉泰姆
Different core materials and shapes will change the size/current and price/current relationship of9mR嘉泰姆
an inductor. Toroid or shielded pot cores in ferrite or permalloy materials are small and don’t9mR嘉泰姆
radiate much energy, but generally cost more than powdered iron core inductors with similar9mR嘉泰姆
electrical characteristics. The choice of which style inductor to use often depends more on the9mR嘉泰姆

price vs size requirements and any radiated field/EMI requirements than on what the CXSD610369mR嘉泰姆

requires to operate. Table 1 shows some typical surface mount inductors that work well in9mR嘉泰姆
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