{"product_id":"lm723-voltage-regulator-ic-in-pakistan","title":"Hlf Lm723 Voltage Regulator Ic","description":"\u003cp\u003eThe 723 voltage regulator is commonly used for series voltage regulator applications. It can be used as both positive and negative voltage regulator. It has an ability to provide up to 150 mA of current to the load, but this can be increased more than 10A by using power transistors. It also comes with comparatively low standby current drain, and provision is made for either linear or fold-back current limiting. LM723 IC can also be used as a temperature controller, current regulator or shunt regulator and it is available in both Dual-In-Line and Metal Can packages.The input voltage ranges from 9.5 to 40V and it can regulate voltage from 2V to 37V.\u003c\/p\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003e\u003cimg alt=\"Image result for LM 723\" src=\"http:\/\/e2e.ti.com\/cfs-file.ashx\/__key\/communityserver-discussions-components-files\/321\/0143.LM723_2D00_60V.bmp\"\u003e\u003c\/p\u003e\n\u003ch1 style=\"margin-bottom: 1em; font-size: 1.643em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eFeatures of 723 Voltage Regulator\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e150 mA output current without external pass transistor\u003c\/li\u003e\n\u003cli\u003eOutput currents in excess of 10A possible by adding external transistors\u003c\/li\u003e\n\u003cli\u003eInput voltage 40V max\u003c\/li\u003e\n\u003cli\u003eOutput voltage adjustable from 2V to 37V\u003c\/li\u003e\n\u003cli\u003eCan be used as either a linear or a switching regulator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 style=\"margin-bottom: 1em; font-size: 1.643em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eInternal Block Diagram\u003c\/h1\u003e\n\u003cdiv class=\"wp-caption aligncenter\" style=\"clear: both; margin-right: auto; margin-bottom: 1.618em; margin-left: auto; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em;\"\u003e\u003ca href=\"https:\/\/electrosome.com\/wp-content\/uploads\/2012\/12\/723-Voltage-Regulator-Internal-Block-Diagram.jpg\"\u003e\u003cimg alt=\"723 Voltage Regulator Internal Block Diagram\" class=\"wp-image-4151\" height=\"292\" src=\"https:\/\/digilog.pk\/cdn\/shop\/files\/723-Voltage-Regulator-Internal-Block-Diagram.jpg\" title=\"723 Voltage Regulator Internal Block Diagram\" width=\"490\" data-original=\"https:\/\/electrosome.com\/wp-content\/uploads\/2012\/12\/723-Voltage-Regulator-Internal-Block-Diagram.jpg\" loading=\"lazy\" data-files=\"723-Voltage-Regulator-Internal-Block-Diagram.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"wp-caption-text\" style=\"margin-top: 0px; margin-bottom: 0px; font-style: italic; padding: 0px 0px 1em;\"\u003e723 Voltage Regulator Internal Block Diagram\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eThe internal working can be explained by dividing it into two blocks, the reference voltage generatorand the error amplifier. In the reference voltage generator, a \u003ca href=\"https:\/\/electrosome.com\/zener-diode-voltage-regulator\/\" title=\"Zener diode voltage regulator\" aria-label=\"Visit a webpage about Zener diode voltage regulator\"\u003ezener diode\u003c\/a\u003e is being compelled to operate at fixed point (so that zener output voltage is a fixed voltage) by a constant current Source which comes along with an amplifier to generate a constant voltage of 7.15V at the Vref pin of the IC.\u003c\/p\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eAs for the error amplifier section,it consists of an error amplifier, a series pass transistor Q1 and a current limiting transistor. The error amplifier can be used to compare the output voltage applied at Inverting input terminal through a feedback to the reference voltage Vref applied at the Non-Inverting input terminal.These connections are not provided internally and so has to be externally provided in accordance with the required output voltage.\u003cbr\u003eThe conduction of the transistor Q1 is controlled by the error signal. It is this transistor that controls the output voltage\u003c\/p\u003e\n\u003ch1 style=\"margin-bottom: 1em; font-size: 1.643em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003ePin Out 723 Voltage Regulator\u003c\/h1\u003e\n\u003cdiv class=\"wp-caption aligncenter\" style=\"clear: both; margin-right: auto; margin-bottom: 1.618em; margin-left: auto; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em;\"\u003e\u003ca href=\"https:\/\/electrosome.com\/wp-content\/uploads\/2012\/12\/LM723-Metal-Can-Package.jpg\"\u003e\u003cimg alt=\"LM723 Metal Can Package\" class=\"size-full wp-image-9737\" height=\"176\" src=\"https:\/\/digilog.pk\/cdn\/shop\/files\/LM723-Metal-Can-Package.jpg\" width=\"234\" data-original=\"https:\/\/electrosome.com\/wp-content\/uploads\/2012\/12\/LM723-Metal-Can-Package.jpg\" loading=\"lazy\" data-files=\"LM723-Metal-Can-Package.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"wp-caption-text\" style=\"margin-top: 0px; margin-bottom: 0px; font-style: italic; padding: 0px 0px 1em;\"\u003eLM723 Metal Can Package\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-caption aligncenter\" style=\"clear: both; margin-right: auto; margin-bottom: 1.618em; margin-left: auto; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em;\"\u003e\u003ca href=\"https:\/\/electrosome.com\/wp-content\/uploads\/2012\/12\/723-Voltage-Regulator-Pin-Diagram.jpg\"\u003e\u003cimg alt=\"723 Voltage Regulator Pin Diagram\" class=\"wp-image-4148\" height=\"393\" src=\"https:\/\/digilog.pk\/cdn\/shop\/files\/723-Voltage-Regulator-Pin-Diagram.jpg\" title=\"723 Voltage Regulator Pin Diagram\" width=\"518\" data-original=\"https:\/\/electrosome.com\/wp-content\/uploads\/2012\/12\/723-Voltage-Regulator-Pin-Diagram.jpg\" loading=\"lazy\" data-files=\"723-Voltage-Regulator-Pin-Diagram.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"wp-caption-text\" style=\"margin-top: 0px; margin-bottom: 0px; font-style: italic; padding: 0px 0px 1em;\"\u003e723 Voltage Regulator Pin Diagram\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eV and V-\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eThese are the supply voltage terminals of the IC. V is the positive terminal and V- is the negative terminal. The voltage difference between these terminals should be between 9.5V to 40V.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eNon Inverting Input\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eThis is the non inverting input of the error amplifier whose output is connected to the series pass transistor. We usually give reference voltage or a portion of it to the non inverting input.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eInverting Input\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eThis is the inverting input of the error amplifier whose output is connected to the series pass transistor. We usually give output voltage or a portion of it to the inverting input. This makes the output voltage constant.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eVref\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eIt is the reference voltage output of the IC. It is the output of voltage reference amplifier. Its output voltage is about 7.15V.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eVout\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eIt is the output terminal of the IC. Usually output voltage ranges from 2 to 37V. This pin can provide up to 150mA current.\u003c\/p\u003e\n\u003cdiv style=\"color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003e \u003c\/div\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eCurrent Limit\u003c\/h3\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eIt is the base input of the current limiter transistor. This pin is used for current limiting or current fold back applications.\u003c\/h3\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eCurrent Sense\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eThis is the emitter of current limiting transistor. This terminal is used with current limiting and current fold-back applications.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eVc\u003c\/h3\u003e\n\u003cp style=\"margin-top: 0px; margin-bottom: 2.857em; color: rgb(104,108,111); font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eThis is the collector input of the series pass transistor. It is usually directly connected to the positive supply voltage if an external transistor is not used.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 1em; font-family: 'Open Sans', 'HelveticaNeue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 500; line-height: 1.043em; color: rgb(51,62,72); font-size: 1.643em; letter-spacing: -.14px; background-color: rgb(255,255,255);\"\u003eFreq. Comp\u003c\/h3\u003e\n\u003cp\u003eFrequency Compensation : This pin is used to connect a capacitor which bypasses high frequency noises. It is the output of error amplifier. The capacitor is connected between this pin and inverting input of the error amplifier. The prescribed value of this capacitor varies for different types of regulators. Please refer the datasheet for that.\u003c\/p\u003e","brand":"Digilog Electronics","offers":[{"title":"Default Title","offer_id":43962398244929,"sku":"B847","price":70.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/2805\/1777\/files\/HLFLM723VoltageRegulatorICInPakistan.jpg?v=1779578210","url":"https:\/\/stem.pk\/products\/lm723-voltage-regulator-ic-in-pakistan","provider":"stem.pk","version":"1.0","type":"link"}