https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1766090#M7748 <P>你可以理解为他只是一个LDO/regulator的控制器，里面并没有集成功率器件三极管MOSFET，所以才需要外加，就是没有集成进去功率器件。</P> Thu, 30 Nov 2023 03:06:15 GMT guoweisun 2023-11-30T03:06:15Z https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1763545#M7731 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="henry18_0-1700900490946.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/251476i78BD429E578A323A/image-size/medium?v=v2&amp;px=400" role="button" title="henry18_0-1700900490946.png" alt="henry18_0-1700900490946.png" /></span></P><P>as shown above,why do it need a transistor ？&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Sat, 25 Nov 2023 08:25:50 GMT https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1763545#M7731 JhonYF 2023-11-25T08:25:50Z https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1763698#M7732 <P>Those're their definition you can see below picture:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="guoweisun_0-1701055635486.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/251518iD8E29B147E93FF85/image-size/medium?v=v2&amp;px=400" role="button" title="guoweisun_0-1701055635486.png" alt="guoweisun_0-1701055635486.png" /></span></P> <P>&nbsp;</P> Mon, 27 Nov 2023 03:27:43 GMT https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1763698#M7732 guoweisun 2023-11-27T03:27:43Z https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1766085#M7747 <P><SPAN>Why do it need this transistor? What difference does it make？</SPAN></P> Thu, 30 Nov 2023 03:00:59 GMT https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1766085#M7747 JhonYF 2023-11-30T03:00:59Z https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1766090#M7748 <P>你可以理解为他只是一个LDO/regulator的控制器，里面并没有集成功率器件三极管MOSFET，所以才需要外加，就是没有集成进去功率器件。</P> Thu, 30 Nov 2023 03:06:15 GMT https://community.nxp.com/t5/Sensors/The-function-of-ExtRegulator-for-mc33774a/m-p/1766090#M7748 guoweisun 2023-11-30T03:06:15Z