中文
EnglishThe JTMB628 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small,low power applications. The JTMB628 switches at 1.2MHz and allows the use of tiny, low cost capaci
摘要：The JTMB628 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small,low power applications. The JTMB628 switches at 1.2MHz and allows the use of tiny, low cost capaci
一,产品概述(General Description)
The JTMB628 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small,low power applications. The JTMB628 switches at 1.2MHz and allows the use of tiny, low cost
capacitors and inductors 2mm or less in height.Internal soft-start results
in small inrush current and extends battery life.
The JTMB628 features automatic shifting to pulse frequency modulation mode at light loads. The JTMB628 includes under-voltage lockout, current limiting, and thermal overload protection to prevent
damage in the event of an output overload.
TheJTMB628 is available in a small 6-pin SOT-23 package.
JTMB628是一款<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;">固定频率，SOT23-6封装的<a href="http://www.jtm-ic.com/a/xinwenzhongxin/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">电流模式升压变换器，高达1.2MHz的工作频率使得外围电感电容可以选择更小的规格。<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;">内置软<br style="padding: 0px; margin: 0px;"/>启动功能减小了启动冲击电流。JTMB628轻载时自动切换至PFM模式。JTMB628包含了输入欠压锁定，电流限制以及过热保护功能。小尺寸的<br style="padding: 0px; margin: 0px;"/>封装给PCB省下更多的空间。</span>
二</span>.产品特点(Features)
· Integrated 80mΩ Power MOSFET
· 2V to 24V Input Voltage
· 1.2MHz Fixed Switching Frequency
· Internal 4A Switch Current Limit
· Adjustable Output Voltage
· Internal Compensation
· Up to 28V Output Voltage
· Automatic Pulse Frequency Modulation
Mode at Light Loads
· up to 97% Efficiency
· Available in a 6-Pin SOT23-6 Package
三</span>,应用范围 (Applications)
· Battery-Powered Equipment
· Set-Top Boxed
· LCD Bais Supply
· DSL and Cable Modems and Routers
· Networking cards powered from PCI
or PCI express slots
四</span>,产品封装图 (Package)
五</span>,电路原理图</span>
六</span>.产品PDF文档
七</span>,功能概述
JTMB628是一款固定频率，SOT23-6封装的电流模式升压变换器，高达</span>1.2MHz的工作频率使得外围电感电容可以选择更小的规格。内置软启动功能减小了启动冲击电流。</span>JTMB628轻载时自动切换至PFM模式。</span>JTMB628包含了输入欠压锁定，电流限制以及过热保护功能。小尺寸的封装给PCB省下更多的空间</span>
八,相关产品
1.JTMB6273 1.2MHz PWM控制DC/DC升压控制器<br style="padding: 0px; margin: 0px;"/>2.JTMB6372 3.0V-4.2V升5.0V恒流模式PWM升压IC
3.JTMB6284 3.7V升5V固定频率高达1.20MHz电流模式升压变换器<br style="padding: 0px; margin: 0px;"/>4.JTMB6271 3-4.2V升5V恒流模式的PWM升压IC
5.JTMB628 3.7V升5V固定频率高达1.2MHz电流模式升压变换器</span>
The JTMB628 is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small,low power applications. The JTMB628 switches at 1.2MHz and allows the use of tiny, low cost
capacitors and inductors 2mm or less in height.Internal soft-start results
in small inrush current and extends battery life.
The JTMB628 features automatic shifting to pulse frequency modulation mode at light loads. The JTMB628 includes under-voltage lockout, current limiting, and thermal overload protection to prevent
damage in the event of an output overload.
TheJTMB628 is available in a small 6-pin SOT-23 package.
JTMB628是一款<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;">固定频率，SOT23-6封装的<a href="http://www.jtm-ic.com/a/xinwenzhongxin/" target="_blank" style="padding: 0px; margin: 0px; color: rgb(37, 110, 177); text-decoration: none;">电流模式升压变换器，高达1.2MHz的工作频率使得外围电感电容可以选择更小的规格。<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;">内置软<br style="padding: 0px; margin: 0px;"/>启动功能减小了启动冲击电流。JTMB628轻载时自动切换至PFM模式。JTMB628包含了输入欠压锁定，电流限制以及过热保护功能。小尺寸的<br style="padding: 0px; margin: 0px;"/>封装给PCB省下更多的空间。</span>
二</span>.产品特点(Features)
· Integrated 80mΩ Power MOSFET
· 2V to 24V Input Voltage
· 1.2MHz Fixed Switching Frequency
· Internal 4A Switch Current Limit
· Adjustable Output Voltage
· Internal Compensation
· Up to 28V Output Voltage
· Automatic Pulse Frequency Modulation
Mode at Light Loads
· up to 97% Efficiency
· Available in a 6-Pin SOT23-6 Package
三</span>,应用范围 (Applications)
· Battery-Powered Equipment
· Set-Top Boxed
· LCD Bais Supply
· DSL and Cable Modems and Routers
· Networking cards powered from PCI
or PCI express slots
四</span>,产品封装图 (Package)
五</span>,电路原理图</span>
六</span>.产品PDF文档
 | JTMB628 |
JTMB628是一款固定频率，SOT23-6封装的电流模式升压变换器，高达</span>1.2MHz的工作频率使得外围电感电容可以选择更小的规格。内置软启动功能减小了启动冲击电流。</span>JTMB628轻载时自动切换至PFM模式。</span>JTMB628包含了输入欠压锁定，电流限制以及过热保护功能。小尺寸的封装给PCB省下更多的空间</span>
八,相关产品
1.JTMB6273 1.2MHz PWM控制DC/DC升压控制器<br style="padding: 0px; margin: 0px;"/>2.JTMB6372 3.0V-4.2V升5.0V恒流模式PWM升压IC
3.JTMB6284 3.7V升5V固定频率高达1.20MHz电流模式升压变换器<br style="padding: 0px; margin: 0px;"/>4.JTMB6271 3-4.2V升5V恒流模式的PWM升压IC
5.JTMB628 3.7V升5V固定频率高达1.2MHz电流模式升压变换器</span>
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