上几个IC图[MAX1951、1952和AMC7135、7150]

冰冻小章鱼 发表于 2006-2-24 04:14

为了做个激光驱动，好不容易找到MAX1951/1952，可惜不好买，申请了样品，过了半个月，竟然都收到了2片，呵呵，发帖庆祝下。
还给了个小盒子，放IC绝妙哦~~哈哈
和手头的几个IC拍个清晰的图吧，给大家个大小对比也好。（结合5毛钱的大小对比）


型号仔细看下就能辨认了，小的肉眼还看的不太清呢。
 

本来图片2560*1920的，超清晰哦。论坛不支持，缩小了。呵呵~

问多星 发表于 2006-2-25 07:26

呵呵就是这个样子滴这个盒子我家N多哈

冰冻小章鱼 发表于 2006-2-24 04:16

官方网上的IC介绍，大家看看吧。呵呵~
AMC7135——Power LED driver(350mA Advanced Current Regulator)
Features ⊕No external component required ⊕350mA constant sink current ⊕Fast response time ⊕Output short/ open circuit protection ⊕Thermal Shut-Down Protection ⊕2KV HBM ESD protection ⊕300uA low supply current ⊕0.1uA standby current SupplyParameter Symbol Condition Min Typ Max ⊕Supply voltage range 2.7V ~ 6V ⊕SOT-89 and TO-252 package <img src="attachments/dvbbs/2006-2/200622320113564368.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-2/200622320113564368.gif\');}" onmousewheel="return imgzoom(this);" alt="" />

Applications ⊕LED Flashlight Torch ⊕Power LED driver

AMC7135 Typical Application Circuit <img src="attachments/dvbbs/2006-2/200622320141448499.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-2/200622320141448499.gif\');}" onmousewheel="return imgzoom(this);" alt="" />

冰冻小章鱼 发表于 2006-2-24 04:17

AMC7150——1.5A Power LED Driver AMC7150 is a PWM power LED driver IC. The driving current from few milliamps up to 1.5A. It allows high brightness power LED operating at high efficiency from 4Vdc to 40Vdc. Up to 200KHz external controlled operation frequency. External resistor controlled the maximum output current to single LED or a LED string.
Features ⊕Only 5 external components required ⊕Output driving current up to 1.5A ⊕4V~40V wide operation voltage range ⊕High efficiency ⊕ESD protection HBM 2KV ⊕TO-252 5-pin power package
Applications ⊕DC/DC LED driver ⊕Automotive ⊕Lighting

 AMC7150 Typical Application Circuit (1W 350mA) <img src="attachments/dvbbs/2006-2/200622320141448499.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2006-2/200622320141448499.gif\');}" onmousewheel="return imgzoom(this);" alt="" />

冰冻小章鱼 发表于 2006-2-24 04:21

<DIV align=left>MAX1951, MAX1952 </DIV>
<DIV align=left>1MHz、全陶瓷、2.6V至5.5V输入、2A PWM降压型DC-DC稳压器 </DIV>

<TABLE cellSpacing=0 cellPadding=3 width="100%" border=0>

<TR>
<TD>MAX1951/MAX1952高效率、DC-DC降压开关转换器可以输出高达1.5A的输出电流。该稳压器能够从2.6V到5.5V的输入电压产生0.8V到VIN的输出电压，尤其适合于那些需要板上后稳压的应用。在整个负载、线路、温度范围内，MAX1951总输出误差小于1%。 
MAX1951/MAX1952工作在1MHz的固定工作频率，具有高达94%的效率。较高的工作频率减少了外部元件的尺寸。内部的软启动控制电路降低了浪涌电流。短路和热过载保护提高了设计的可靠性。 
MAX1951提供了0.8V到VIN的可调输出，而MAX1952具有1.8V的预置输出电压。两个器件都采用了节省空间的8引脚SO封装。 
关键特性 紧凑的0.385in²电路板尺寸 1.5A输出时可选用10µF输入、输出陶瓷电容2µH电感 效率高达94% 在整个负载、电源电压和工作温度范围内可保持1%的输出精度（MAX1951，输出电流1.5A） 确保2A的输出电流 工作于2.6V至5.5V电源电压 0.8V至VIN可调节输出(MAX1951) 预置输出电压1.8V (精度为1.5%) (MAX1952) 内部数字软启动 短路和热过载保护 
应用 ASIC/DSP/µP/FPGA核及I/O电压 蜂窝基站 网络与电信系统 机顶盒

<TABLE cellSpacing=0 cellPadding=3 width="100%" border=0>

<TR>
<TD>Key Specifications: Switch-Mode DC-DC Power Supplies</TD></TR></TABLE>
<TABLE cellSpacing=1 cellPadding=3 width="100%" border=0>

<TR>
<TD>Part Number</TD>
<TD>Min. VIN (V)</TD>
<TD>Max. VIN (V)</TD>
<TD>Preset VOUT (V) *See Data Sheet</TD>
<TD>Min. Adj. VOUT (V)</TD>
<TD>Max. Adj. VOUT (V)</TD>
<TD>Typ. IOUT (A)</TD>
<TD>Max. ICC (mA)</TD>
<TD>Op. Freq. (kHz)</TD>
<TD>Package</TD>
<TD>Operating Temp. Range (°C)</TD>
<TD>Price @ 1k</TD></TR>
<TR>
<TD>MAX1951 </TD>
<TD>2.6</TD>
<TD>5.5</TD>
<TD></TD>
<TD>0.8</TD>
<TD>5</TD>
<TD>2</TD>
<TD>10</TD>
<TD>1000</TD>
<TD><a href="http://www.maxim-ic.com/cgi-bin/packages?pkg=8%2FSO%2E150&Type=Max" target="_blank" >8/SO.150</A></TD>
<TD>-40 to +85</TD>
<TD>$1.50</TD></TR>
<TR>
<TD>MAX1952 </TD>
<TD>1.8</TD>
<TD>1.8</TD>
<TD>1.8</TD>
<TD>$1.50</TD></TR></TABLE></TD></TR></TABLE>

冰冻小章鱼 发表于 2006-2-24 04:25

AMC7135和7150应该是目前LED手电上用作恒流IC最多的了。淘宝啥的都有卖，MAX1951/1952没见过，也没地方买，只能申请免费样品，不过只能申请一次。晕哦~~~~

Executor 发表于 2006-2-24 05:38

问个比较低级的问题：
如果我要输出2.7V电压驱动激光管，那么应该在电路哪里再加个电阻之类的东东？（别告诉我是直接串在激光管上，那样太浪费能量了）还有，那玩艺儿发热量大不大？我不希望塞在手电里开了不一会它就打开热过载保护。

goldvd 发表于 2006-2-24 16:59

小章鱼不错哦！如何申请样片啊！

冰冻小章鱼 发表于 2006-2-25 03:15

<DIV class=quote>以下是引用goldvd在2006-2-24 8:59:34的发言： 小章鱼不错哦！如何申请样片啊！</DIV>
<a href="http://www.maxim-ic.com.cn/samples/" target="_blank" >http://www.maxim-ic.com.cn/samples/</A>
这儿~~哈哈

页: [1]

手电大家谈-手电筒爱好者之家's Archiver

上几个IC图[MAX1951、1952和AMC7135、7150]