MC34063 is a monolithic control circuit containing the primary functions required for DC-to-DC converters These devices consist of an internal temperature compensated reference, comparator, controlle

发布时间:2020-04-06 09:43:38 浏览次数:702 作者:嘉泰姆 来源:1
摘要:MC34063 is a monolithic control circuit containing the primary functions required for DC-to-DC converters These devices consist of an internal temperature compensated reference, comparator, controlle
目录


,产品概述(General Description)         
       MC34063 is a monolithic control circuit containing the primary
functions required for DC-to-DC converters These devices consist
of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit, driver
and high current output switch. This series was specifically designed to
be incorporated in Step-Down and Step-Up and Voltage-Inverting applications
with a minimum number of external components.
     MC34063 是一块单片 DC/DC 变换控制电路,内含直流到直流变换器所要求
的主要<a href="http://www.jtm-ic.com/a/xinwenzhongxin/xinpinjishu/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">功能。这些<a href="http://www.jtm-ic.com/a/xinwenzhongxin/xinpinjishu/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">功能有:带有温度补偿的基准电压源、比较器、带激励<a href="http://www.jtm-ic.com/a/xinwenzhongxin/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">电流限<br style="padding: 0px; margin: 0px;"/>制的占空比可控振荡器、驱动器和大电流输出开关等。该电路是<a href="http://www.jtm-ic.com/a/xinwenzhongxin/xinpinjishu/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">专为降压、升压<br style="padding: 0px; margin: 0px;"/>和倒相应用所设计的,应用时外围<a href="http://www.jtm-ic.com/a/xinwenzhongxin/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">元</span>器件少。<br style="padding: 0px; margin: 0px;"/>
二</span>.产品特点(Features)
1.)Operation from 3.0 V to 40 V Input
2.)Low Standby Current
3.)Current Limiting
4.)Output Switch Current to 1.5 A
5.)Output Voltage Adjustable
6.)Frequency Operation to 100 kHz
7.)Precision 2% Reference
8.)8 pin DIP and SO package


三</span>,应用范围 (Applications)

四.下载产品资料PDF文档 
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MC34063


五</span>,产品封装图 (Package)

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引出端<br style="padding: 0px; margin: 0px;"/>序号符号功能引出端<br style="padding: 0px; margin: 0px;"/>序号符号功能
1CSW开关集电极5INCOM比较器反相输入</td>
2ESW开关发射极6VCC电源
3GT定时电容器</td>7Ipk电流限止传感
4GND地</td>8CDR驱动器集电极

六</span>.电路原理图</span>


七</span>,功能概述
极限参数(Tamb=25℃)
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参数符号数值</td>单位
电源电压Vcc40V
比较器输入电源范围</td>Vi(comp)-0.3~+40V
开关集电极电压Vc(sw)40V
开关发射极电压Ve(sw)40V
开关 C-E 电压Vce(sw)40V
驱动器集电极电压Vc(dr)40V
驱动器集电极电流Ic-55~100mA
开关电流</td>Isw1.5A
功耗</span>PD1.25W
工作结温Tj150℃</td>
工作环境温度Tamb0~70℃</td>
贮存温度Tstg-65~150℃</td>

 
电特性(除非特别说明,Tamb=25℃,Vcc=5V)</span>

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参数名称符号测试条件最小</td>典型最大</td>单位
振荡器</td>
频率fOSCVpin=0V, CT=1.0243342kHz
充电电流IchqVpin5=5~ 40V243542μA
放电电流IdischgVpin5=5~ 40V140190260μA
放电、充电电流之比</td>KV7=Vcc5.26.17.5
电流限止传感电压VIPK
250300350mV
输出开关</td>
饱和电压Vce(sat)达林顿联接 Isw=1.0A
Pin1 to Pin8

1.01.3V
饱和电压Vce(sat)Isw=1.0A Rpin8=82Ω
0.450.7V


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直流电压增益hFEIsw=1.0A, Vce=5.0V50120

集电极 OFF 状态电流</td>Ic(off)Vce=40.0V
0.01100μA
门限电压VthTamb=25℃</td>1.2251.251.275V
Tamb=0℃~70℃</td>1.21
1.29
门限电压线路调整





RegVcc=3.0~40V
1.45.0mV
输入偏置电流IIBVin=0V
-40-400nA

门限电压Vth
V
八,相关产品
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 型号 输入耐压 输出电压 限制电流 反馈电压 工作频率 静态工作电流</td> 待机电流 封装
MC34063 40 可调 1.5A 1.25V 100KHz 4mA 40uA SOP-8/DIP-8










我司的MC34063/SOP8&DIP8/1.5A的<a href="http://www.jtm-ic.com/a/xinwenzhongxin/xinpinjishu/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">优点:</td>





1.工作电压3.0-40V







2.内部开关管的最大电流可达1.5A,和<a href="http://www.jtm-ic.com/a/xinwenzhongxin/xinpinjishu/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">市场低端的0.8A/1.2A的产品不同.



3.主要用于高端的车充/充电器/适配器/电源/LED照明等产品.























型号最大</td>启动电流振荡频率最大</td>平均启动电压 维持电压封装替代型号
电源电压输出电流电源电流
TL49442V
1K-200KHz200mA7mA

DIP16/SOP16TL494/KA7500
JTM750042V
1K-200KHz200mA7mA

DIP16/SOP16TL494/KA7500
UC384230V0.12mA47K-57KHz12mA12mA16V10VDIP8/SOP8UC3842/KA3842
UC384330V0.12mA47K-57KHz12mA12mA8.4V7.6VDIP8/SOP8UC3843/KA3843




















型号参考电压值</td>参考电压精度</td>最大耐压最大电流</td>封装状态</td>直接替代型号

JTM431 2.4950.50%40V100mASOT-23量产TL431/LM431

TL431

JTM432 1.240.50%18V100mASOT-23量产TL432/LM432

TL432











我司的JTM431/TL431 TO-92&SOT-23的优点:





精度高,精度是0.5%,90%可达0.3%的精度。</td>





TO-92的是采用铜脚的,不是市场低端的铁脚的。</td>















我司的JTM432/TL432 TO-92&SOT-23的优点:





精度高,精度是0.5%,90%可达0.3%的精度。</td>





TO-92的是采用铜脚的,不是市场低端的铁脚的。</td>















产品应用:&nbsp;  







1.LED电源   







2.电源(开关电源、UPS电源、通信电源等)   




3.充电器&nbsp;  







4.适配器&nbsp;  







5.电源板&nbsp;  







6.小家电、家电电源板







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