CXSD61028 is a wide input range step down DC/DC converrter from a high voltage input supplly.Opperating withh an input voltage rannge of 8V ～30V The CXSD61028 achhieves 4.2A continuous output curren

目录3kr嘉泰姆

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

3kr嘉泰姆

一,产品概述(General Description)      3kr嘉泰姆

   The  CXSD61028 is a wide input range step down DC/DC converrter from a
high voltage input supplly.Opperating withh an input voltage rannge of
8V ～30V  The CXSD61028 achhieves 4.2A continuous output currennt with
exxcellent loaad and linne reggulation. Thee synchronoous architeccture
providees for highly efficcient designns. Constantt current annd connstant
voltaage mode operation provide faast transient respoonse and eaases loop staabilization The CXSD61028 features a dual-channneling CV/C moode control ffunctions. It operates in the Constant outtput Current mode or Constant ouutput Voltagge moode. The oveer current protection cuurrent value is sett by current sensing resisters.
   The CXSD61028 requires a minimum number of reaadily availabble standarrd external componentts. Othher featuress include caable drop coompensation,
andd thermal 
二</span>.产品特点(Features)3kr嘉泰姆

ØWidee Input Voltaage Range: 8V ～ 30V
ØUp too 93% Efficiency
Ø No LLoop Compeensation Reqquired
Ø Duall-channelingg CC/CV conntrol
Ø Cablle drop Commpensation from 0Ω to 0.3Ω
Ø Proggrammable CC Current
Ø Therrmal Shutdoown
Ø Overr current prootection
Ø UVLO protectionn
Ø Available in SOPP8-PP Package
三</span>,应用范围 (Applications)3kr嘉泰姆

Ø Car Charger / Addaptor
Ø LED Driver
Ø Pre-Regulator foor Linear Ree
Ø Distrributed Power Systems
Ø Batteery Chargerr
四.技术</span>规格书下载（产品PDF）</span>3kr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</span>！</span>
3kr嘉泰姆

五,产品封装图 (Package)3kr嘉泰姆

六.电路原理图</span>3kr嘉泰姆

七</span>,功能概述3kr嘉泰姆

Input Supply Voltage ...................................................................................................– 0.3V ～ 35V
3kr嘉泰姆

PDRI PIN Voltage.…………………………………………………………………………..– 0.3V ～ 35V
EN, FB, NDRI Voltages............................................................ .... .... .... ..................... – 0.3V ～ 6V
SW Voltage .......................................................................................................– 0.3V ～ (VIN + 1V)
Operating Temperature Range(Note 2)…………………………………………….......–40℃ ～ +85℃</span>
Junction Temperature…………………………………………………………………………..……+150℃</span>
Storage Temperature Range................................................................................. – 65℃ ～ +150℃</span>
Lead Temperature (Soldering, 10 sec)................................................................................... +265℃</span>
八</span>.CXSD61028双路输出 2.4A 车载充电器应用指南</span>3kr嘉泰姆

8.1应用电路

8.2简要说明</span>
     (1) 电路应用简单，外部元</span>器件较少，系统成本低，</span>可靠性</span>高。</span>
     (2) 输出短路保护功能，</span>内置过温保护，输入过压保护，过流保护可调，输出</span>电流：Ics1=100mV/R2，Ics2=100mV/R3
     输出带有线缆补偿功能：ΔVout(V) = R5(kΩ) · Iout(A)/2000
     (3) 输入电压范围：8-30V DC。SOP-8 封装。</span>
8.3DEMO 板 PCB 图</span>
     
8.4DEMO 板测试</span>

8.5 注意事项
3kr嘉泰姆

（1）PCB 布局时 VIN，GND，SW，VOUT 等功率直线尽量要粗，短，直。<br style="padding: 0px; margin: 0px;"/>（2）FB 脚走线尽量远离 SW 信号，并且取样走线需要从输出电容正极接点取。外围最好使用地线包围。<br style="padding: 0px; margin: 0px;"/>（3）输入电容要靠近芯片 VIN 和 GND 引脚，输入地，输出地，<a href="http://www.jtm-ic.com/a/xinwenzhongxin/xingyexinwen/2015/0707/11.html" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">芯片地线尽量靠近。<br style="padding: 0px; margin: 0px;"/>（4）外挂 NMOS 和 PMOS 引脚散热焊盘覆铜面积越大越好，以利散热。</p>

8.6EMC 改善措施3kr嘉泰姆

（1）Layout：要保证功率环路面积小，地面积大，输入电容靠近芯片，SW 引线尽量短。</span>
（2）可在 SW 到地间加一个吸收电路：10 欧姆+1NF 来吸收开关尖峰。</span>
八,相关芯片选择指南                 更多同类产品......3kr嘉泰姆