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2A输出电流降压型DC变换器CXSD62281输入电压4.5V～30V效率高达95%可编程的软启动340KHz恒定开关频率
发表时间：2020-05-14
浏览次数：326

目录

1.产品概述       2.产品特点     Pj4嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）Pj4嘉泰姆

5.产品封装       6.电路原理图  Pj4嘉泰姆

7.相关产品Pj4嘉泰姆

   产品概述 返回TOPPj4嘉泰姆

      CXSD62281B是一款同步的采用电流模的降压型DC-DC变换器，可以提供高达2A的负载电流，具有很好的线性和负载调整率。CXSD62281B可以在宽输入电压范围4.5V～30V内稳定工作，通过外部电阻调节可实现0.923V~20V的输出电压。CXSD62281B具有周期性的峰值电流限制和过温等保护机制，以确保芯片工作的安全性。芯片在关断模式下的静态电流可低至1μA以下。可编程的软启动有效减小了输入浪涌电流和启动时的输出过冲。在轻负载时，芯片可自动工作在脉冲跳跃模式来提高效率。The CXSD62281B is a synchronous current mode buck regulator capable of driving 2A continuous load current with excellent line and load regulation. The CXSD62281B can operate with an input range 4.5V to 30V and the output can be externally set from 0.923V to 20V with a resistor divider. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 1μA of supply current. Programmable soft-start minimizes the inrush supply current and the output overshoot at initial startup. Automatic pulse skipping mode operation increase efficiency at light loads. The CXSD62281B require a minimum number of external components.

   产品特点 返回TOPPj4嘉泰姆

 Pj4嘉泰姆

• 高达2A的输出电流Pj4嘉泰姆

• 轻负载下自动工作在脉冲跳跃模式Pj4嘉泰姆

• 35V输入浪涌电压保护Pj4嘉泰姆

• 内部集成160/110mΩ的DMOS开关管Pj4嘉泰姆

• 输入电压范围：4.5V至30VPj4嘉泰姆

• 输出电压可调：0.923V至20VPj4嘉泰姆

• 效率高达95%Pj4嘉泰姆

• 关断电流<1μAPj4嘉泰姆

• 340KHz恒定开关频率Pj4嘉泰姆

• 可编程的软启动Pj4嘉泰姆

• 过温保护和过流保护Pj4嘉泰姆

• 输入过压/欠压保护Pj4嘉泰姆

• 230n的最小Ton时间Pj4嘉泰姆

• SOP-8封装Pj4嘉泰姆

• 符合RoHS规范及Pb-FreePj4嘉泰姆

 2A Output CurrentPj4嘉泰姆

 Automatic Pulse Skipping Mode at Light LoadPj4嘉泰姆

 35V Input Surge ProtectionPj4嘉泰姆

 Integrated 160m/110m DMOS SwitchesPj4嘉泰姆

 4.5V to 30V Input Operating RangePj4嘉泰姆

 Output Adjustable from 0.923V to 20VPj4嘉泰姆

 Up to 95% EfficiencyPj4嘉泰姆

 1μA Shutdown CurrentPj4嘉泰姆

 Fixed 340KHz FrequencyPj4嘉泰姆

 Programmable Soft-StartPj4嘉泰姆

 Thermal Shutdown and Overcurrent ProtectionPj4嘉泰姆

 Input Supply Overvoltage and UndervoltagePj4嘉泰姆

LockoutPj4嘉泰姆

 230ns Minimum On TimePj4嘉泰姆

 Available in SOP-8 PackagePj4嘉泰姆

 RoHS Compliant and 100% Lead(Pb)-FreePj4嘉泰姆

Halogen-FreePj4嘉泰姆

   应用范围 返回TOPPj4嘉泰姆

 Pj4嘉泰姆

• 分布式电源Pj4嘉泰姆

• 网络系统Pj4嘉泰姆

• PC设备Pj4嘉泰姆

• 可携式产品 Pj4嘉泰姆

Distributed Power Systems  Pj4嘉泰姆

Networking Systems  Pj4嘉泰姆

PC Monitors  Pj4嘉泰姆

Portable ElectronicsPj4嘉泰姆

   技术规格书（产品PDF) 返回TOP Pj4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！Pj4嘉泰姆

 QQ截图20160419174301.jpgPj4嘉泰姆

产品封装图 返回TOPPj4嘉泰姆

aPj4嘉泰姆

电路原理图 返回TOPPj4嘉泰姆

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(KHz)Pj4嘉泰姆

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1000Pj4嘉泰姆

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