Showing posts with label IC. Show all posts
Showing posts with label IC. Show all posts

LM340 pinout | Introduction | Specifications | Packages | Features | Applications

Introduction 

LM340 is a 1.5-A fixed voltage regular. The LM340 is a three-terminal positive voltage regulator that uses safe area compensation, internal current limitation, and thermal shutdown, which basically makes it indestructible. This article mainly covers the configuration, pinout, circuit, applications, features, and more details about the LM340 voltage regulator.

Description

The LM340 is a three-terminal positive voltage regulator that uses a safe area compensation, internal current limitation, and thermal shutdown, which basically make them indestructible. Over the 1.5 A output current, they can provide sufficient heat sinking. Several uses, including local regulation to reduce noise and address distribution issues related to single-point regulation. This device can be utilized with external components to provide chargeable output voltage and currents, allowing it to be used as a fixed regulator. Much work was put into minimizing the amount of external components and making the complete line of regulators simple to operate.

Specifications

Output option - Fixed output
  • Iout(max) (A) - 1.5 
  • Vin(max) (V) - 35
  • Vin(min) (V) - 7.5
  • Vout(max (V) - 15
  • Vout(min) (V) - 5
  • Rating - Catalog
  • Noise (μVrms) -  40
  • Fixed output option (V) - 5,12,15
  • Accuracy (%) - 2.5
  • Thermal resistance θJA ( ºC/W) - 24
  • PSRR at 100 KHz(dB) - 50
  • Dropout voltage(Vdo) (typ) (mv) - 2000
  • Operating temperature range ( ºC) - 0 to 125
LM340 Pinout Configuration
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Packages
  • SOT - 223 - size -  45.5 mm2  6.5 * 7
  • TO-220 (NDE) - Size -  46.5328 mm² 10.16 ⨯ 4.58
  • TO-220(NDG) - Size - 193.548 mm² 10.16 ⨯ 19.05
  • TO-263 (KTT) - Size  - 154.8384 mm² 10.16 ⨯ 15.24

Features of LM340 IC

  • Output current up to 1.5 A.
  • Output voltage tolerance of  ±2% at TJ = 25 ºC.
  • Line configuration of 0.01% /V of at 1 -A load.
  • Load regulation of 0.3% / A 
  • Available in fixed  5-V, 10-V and 15-V options.
  • Internal thermal overload, short circuit, and SOA protection.
  • Output capacitance is not required for stability
LM340 Functional Block Diagram

LM340 functional block diagram

LM340 Functional Block Diagram


LM340 Applications

  • Industrial power supply
  • SMPS post regulation
  • Fixe3d voltage regulator
  • Test and measurement equipment
  • Solar energy string inverters
  • Brushed and brushless DC motors
  • HVAC system
  • Local on-card regulation
  • AC inverters
  • Energy string inverters

Conclusions :

Here this post gives the all about information IC LM 340 like pinout, applications, advantages, and features. We hope you all understand this topic. Furthermore, query regarding your project please give your feedback by commenting in the comment sections.

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LM1117 Pinout | Introduction | Configuration | Features | Advantages | Application

LM1117 is an adjustable voltage regulator that can provide a patch as well as a variable voltage. It can provide a fixed voltage of 1.8,2.5, 2.85.3.3, and 5 volts for a starter. It has a variable output voltage that can be adjusted between 12.5 and 13.8 volts. Let us have a deep insight into the introduction, pinout, features, advantages, applications of LM1117.

LM1117 Pinout Diagram:

  • Pin1: This pin connects to the ground when used in fixed voltage mode. It is the adjustable mode, it is an adjust pin and provides features to adjust the output voltage as desired.
  • Pin2: It gives the stable and regulated output voltage.
  • Pin3: The IC applied with input voltage signal through this pin

LM1117 Pinout Diagram


Features of LM1117:

  • Fixed/adjustable 3 terminal linear voltage regulator
  • Output current is 800mA
  • Inbuilt current limiting and thermal protection
  • Available in To-220, SOT223, TO263 packet
  • Variable voltage range:1.25V to 13.8V
  • Operating Junction temperature is 125 degrees centrigrated.
  • Fixed voltage type: 1.8V, 2.5V, 3.3V, and 5V.
  • The maximum input voltage for this IC is 20V.
  • The line voltage regulator having a minimum drop-out voltage of 1.1V.
  • Line regulation of 0.1% max and load regulation of  0.2% max.
  • It has an internal thermal protection circuit for protecting IC against overheating
  • Protection against overcurrents is also provided.

Application of LM1117: 

  • AC drive stage modules
  • Merchant network and server PSU
  • Industrial AC/DC
  • Ultrasound scanners
  • Switching DC to DC converters
  • Controlling motors
  • The current limiting and reverse polarity circuit can be implemented using this linear voltage regulator.
  • Servo drive control modules
Alternative voltage regulators:

LM7805, LM7809, LM7905, LM117V33, XC6206P332MR


Where to use it?

These are high-efficiency linear regulators can work down to -40 degree centigrade which makes it suitable for outdoor and high altitude applications. This chip can be used in battery chargers. Battery-powered instrumentation and in designing variable power supplies. This chip is used in DVDs, PC, and some other consumer products.

LM317 pinout | Introduction | Configuration | Features | Advantages | Application

As we know that IC is available in various forms like 555 timers, single logic gates, microcontroller, microprocessor, voltage regulator, and op-amps like different ICs. IC  LM741, LM324 IC, LM339 IC, LM117, LM358, LM7805, LM138, and many more ICs are available. Here we have to learn or introduce IC LM37. Let us have a deep insight into the introduction, pinout, features, advantages, applications of LM317.

Introduction to LM317:

When it comes to variable control, the LM317 is almost certainly the best choice. It can be used as a fixed voltage regulator, current limiter, battery charger, AC voltage regulator, and even an adjustable current regulator in addition to being a variable voltage regulator. 

LM317 Pinout Diagram:

Pin 1: Adjust - This pin adjusts the output voltage.

Pin 2: Output voltage - The regulated output voltage set by the adjusted pin can be obtained from this

 Pin 3: Input voltage- The input voltage which has to be regulated is given to this pin


LM317 pinout

Features of LM317:

  • The output voltage can set to range from 1.25 to 37V
  • Adjustable 3 terminal positive voltage regulator
  • Require low external component
  • The maximum input to output voltage difference is 40V, recommended 15V
  • The maximum output current when a voltage difference is 15V is 2.2A
  • Available in to-220, SOT223, TO263 package
  • The output current is 1.5A.
  • Overheat shutdown function
  • Capable of short circuit protection
  • Require only two external resistors for output adjustment
  • Low price
  • Reliable to use in commercial applications
  • Low standby current
  • There are 80 dB ripple rejection
  • The operating junction temperature is 125 °C

Application of LM317:

  • Used for positive voltage regulation
  • Variable power supply
  • DC to Dc converter
  • Battery charger
  • Solar power supply
  • Microcontroller related application
  • Current limiting circuits
  • Used in motor control circuits
  • Reverse polarity circuit
  • Commonly used in desktop, PC, DVD, and other consumers products
  • Portable instruments

Simple application circuit of LM317:


The LM317 voltage regulator is demonstrated in this simple circuit. Only two external resistors are needed in this case. Capacitors may also be used to eliminate voltage differences at the input and output terminals. These capacitors help to reduce the output voltage ripple.

Simple application circuit of LM317


The output voltage of this circuit depends on resistors R1 and R2. The equations for calculating output voltage will be:

VOUT: 1.25 * ( 1+(R2+R1)
If R1 & R2 are minimum, the output will be equal to 1.25
If R1=R2, the output voltage will be 2.5 volts.

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LM338 pinout | Introduction | Configuration | Features | Packages | Advantages | Application

As we know that there are available in various forms of 555 timers, single logic gates, microcontroller, microprocessor, voltage regulator and op-amps like different ICs IC  LM741, LM324 IC, LM339 IC, LM358, and many more ICs are available. Here we have to learn or introduce about  IC LM358 because it has low power and easy to use dual channel op-amp IC. This IC is designed especially to operate from a single power supply over a wide range of voltages. It is a good, standard operational amplifier and the most important point for this IC is suitable for your needs. LM358 IC is available in a small size as a chip. This IC is the most commonly used device due to its cost-efficiency. Let us have a deep insight into the introduction, pinout, configuration, features, packages, advantages, applications of LM358.

Introduction to LM338 Pinout:


LM338 is the adjustable DC power supply circuit, 1.2 V to 30 V. It ca e provide a current maximum to 5A ad 10 A. If you have used LM317 or LM350. There is similar and so easy to use with a few components. ut LM338 has a higher current than LM317.

Pin out LM338:


The LM338 are adjustable 3 terminal positive voltage regulators capable of supplying in excess of 5A over 1.2V to 32V output range.




They are exceptionally easy to use ad require only 2 resistors to set the output voltage.

The careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies. 

Features of LM338:

  • 5A output current.
  • 7A maximum output current.
  • Adjustable output 1.2V to 37V.
  • Line regulation typically 0.1%.
  • Thermal regulation.
  • Line regulation typically 0.005%/V.
  • The current limit is constant with temperature.
  • P+ product enhancement tested.
  • Output in short circuit protected.
  • The current limit is constant with temperature.
Applications:
  • Adjustable power supply
  • Constant current regulator
  • Battery charger
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LM339 pinout | Introduction | Pin Configuration | Features | Rating | Package | Advantages | Applications

Introduction to LM339:


LM339 is a voltage comparator IC from the LMx39x series and is manufactured by many industries. The devices consist of four independent voltage comparator that is designed to operate from a single power supply. Also, operation from dual supplies is possible, as long as the difference between the two supplies is between 2V to 36 V.

Basically, LM339 is a comparator IC having four built-in compare, The main purpose of a comparator is to rotate the signal between analog and digital domains. At input terminals the compares the two different input voltage applied and gives digital output and it indicates the larger input applied at the input terminal.

You should also read about other ICs of the same family(LM3xx) like:

LM35, LM311, LM335, LM337LM338 LM339, LM348, LM358,  LM386, LM393, LM7805 PINOUTLM317 PINOUT, LM340 etc.

LM339 pin configuration:

  • Pin 1(OUT): It is an output pin of the first comparator.
  • Pin 2(OUT): It is an output pin of the second comparator.
  • Pin 3(VCC): It is a power supply comparator.
  • Pin 4(IN-): It is a negative input pin of the second comparator.
  • Pin 5(IN+):  It is a positive input pin of the second comparator.
  • Pin 6(IN-):  It is a negative input pin of the first comparator.
  • Pin 7(IN+): It is a positive input pin of the first comparator.
  • Pin 8(IN-):  It is a negative input pin of the third comparator.
  • Pin 9(IN+): It is a positive input pin of the third comparator.
  • Pin 10(IN-): It is a negative input pin of the fourth comparator.
  • Pin 11(IN+): It is a +ve input pin of the fourth comparator.
  • Pin 12(GND): It is a ground pin.
  • Pin 13(OUT): It is an output pin of the fourth comparator.
  • Pin 14(OUT): It is an output pin of the third comparator.
LM339 pin configuration


Features of  LM339 IC:

  • Four individually operated voltage comparators.
  • Single supply operation: +3V to +36V.
  • Dual supply operation: +18V to -18V.
  • Single supply operation: +3V to +36V.
  • Low input bias current: 25 nA.
  • Low input offset voltage.
  • Low input offset current: + or - 5.0 nA.
  • Input Common-Mode voltage range to GND.
  • TTL and CMOS are compatible.
  • Low output saturation voltage: 130mV 
  • ESD clamps on the input increase reliability without affecting device operation.
  • Pb-free, halogen-free/BER free and RoHS compliant.

LM339 rating:

  • The (Vcc) supply voltage is 36V.
  • The rating of  (VIDR) input voltage differential range is 30 volts.
  • The rating of (ISC) output short circuit to GND is continuous.
  • The rating of (VICMR) input common-mode voltage will range fro, -0.3 volts to Vcc.
  • The rating of  (TA) operating temperature is -25 °c to 85 °c.
  • The rating of  (PD) power dissipation is 1.
  • The rating of (TJ) junction temperature is 150 °c.

LM339 package:

  • For LM339DG, this package will be SOIC-14 (lead (Pb)  are free)
  • For LM339DR2G, this package will be SOIC-14 (lead (Pb) are free)
  • For LM339DTBR2G, this package will be TSSOP-14 (lead (Pb) are free)
  • For LM339NG, this package will be PDIP-14 (lead (Pb) free)

Advantages of the LM339 IC:

  • High precision comparator.
  • It reduced VOS drift over temperature.
  • Eliminates the need for dual supplies.
  • Allow sensing near GND. 
  • Compatible with all forms of logic.
  • Power drain suitable for battery operation.

LM339 Application:


LM339 has a wide range of real-life applications, we have to represent the major application of LM339 are listed below:
  • Oscillator
  • Voltage comparators
  • Peak detectors
  • Industrial
  • Automotive
  • Measuring instruments
  • Power supervision
  • Logic voltage translation
  • Measuring instruments
  • Translation
  • Driving CMOS
  • Low-frequency Op-amp
  • Transducer Amplifier
  • Zero crossing detector
  • Limit compactor
  • Crystal controlled oscillator
  • Negative reference comparator
  • Driving TTL

LM337 pinout | Introduction | Configuration | Application

Introduction to LM337 IC:


As we know that there are available in various forms of 555 timers, single logic gates, microcontroller, microprocessor, voltage regulator and op-amps like different ICs IC  LM741, LM324 IC, LM339 IC, LM358, LM338, LM337, and many more ICs are available. Here we have to learn or introduce about  IC LM337, it is an adjustable 3 terminal negative voltage regular capable of supplying in excess of 1.5A over an output voltage of -1.2V to -37V. The LM337  serves a wide variety of applications including local, on-card regulations. The LM337 is the equivalent counterpart of the LM317 positive voltage regular. The IC commonly used in adjustable lab voltage in combination with the LM317 IC. It can also be used as current as well as the negative voltage protection circuit.  Let us have a deep insight into the introduction, pinout configuration, features, packages, advantages, applications of LM337.

LM337 pin configuration:


Pin 1: Adjust - These pins adjust the output voltage.
Pin 2: Input voltage(Vin ) - The input voltage which hs to be regulated is given to this pin.
Pin 3: Output voltage(Vout) - The regulated output voltage set by the adjust pin can be obtained from this pin 

lm337 pinout


Features of LM337 pinout:

  • It is an adjustable 3 terminal negative voltage regulator.
  • Its output voltage can be set to range from -1.25V to 37V.
  • The operating junction temperature is 125 C.
  • output voltage adjustable down to VRFF.
  • 0.01%/V typical line regulation.
  • 0.3%/V typical load regulation.
  • The current limit is constant with temperature.
  • Ripple rejection around 77 dB.
  • Standard 3 lead transistor packages.
  • 9.50 ppm/°C temperature coefficient.
  • Excellent thermal regulation around 0.002%/V.
  • Maximum output current when voltage difference 15V is -2.2A.
  • Differential input and the output voltage is 40V, recommended 15V.
  • The maximum output current is -1.5A.
  • Available into To-220, SOT223, TO263 package.

LM337 voltage regulator descriptions:

The LM337 is the basically equivalent counterpart of the LM317 positive voltage regulator.  This IC is commonly used in adjustable lab voltage generators in combination with the LM317 IC. It can be also used in the current regulator. This IC is basically three PINs in which the input voltage supplied to Vin pin then using a pair of the register that we set a voltage at adjusting pin which will decide the output voltage of the IC that given out at Vout pin. The below circuit is shown for reference from the LM337 datasheet.


The output voltage thus obtained can be calculated using the below formula.

Vout  = -1.25 * (1 + (R2/R1))

The actual formula in the datasheet will also include current through the adjust a pin but for a simplification purpose, we have assumed Iadj to be 50uA constant which will slightly differ in the practical application. Also, note that the output current of the IC will not be 1.5A always if the difference voltage between the input and output voltage is high the output current will also decrease. 

Applications of  LM337:

  • Used for positive voltage regulations.
  • Variable power supply.
  • Current limiting circuits.
  • Used in motor control circuits.
  • Commonly used in desktop PC, DVDs, and other consumer products.
  • Reverse polarity circuits.

Conclusions :


Here this post gives the all about information of IC LM 337 like pinout, pin configurations, applications, advantages, features, and also real-life applications. We hope you all understand this topic. Furthermore, queries regarding your project please give your feedback by commenting in the comment sections.

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LM7805 pinout | Introduction | Feature | Diagram | Application

Introduction about IC LM7805 :


In this page, we will discuss one of the most commonly used regulators IC's, the 7805 voltage regulator IC. AS we know that a regulated power supply is very much essential for several electronic devices due to the semiconductor materials employed them have a fixed rate of current as well as voltage. 

One of the most important sources of dc supply is batteries, but while using batteries, it is very sensitive electronics circuit is not a good idea as batteries eventually drain out ad lose their potential over time. 

7805 is a three-terminal linear voltage regulator IC with a fixed output voltage of 5V which is useful in a wide range of applications. Currently, the 7805, voltage regulator IC is a manufactured by many companies like texas instrument, ON semiconductor, ST microelectronics, diodes incorporated, Infineon technologies, etc

LM7805 pinout diagram :


LM7805 is shown in the figure has a three-terminal device with the three pins being Input, Ground, and Output.

Input: Pin 1 is the input pin. A positive unregulated voltage is given as the input to this pin.

Ground: Pin 2 is the ground pin. It is common to both input and output.

Output: Pin 3 is the output pin. The output regulated 5V is taken at this pin of the IC.


LM7805 Pinout



7805 Regulator Features : 

  • 5V positive voltage regulator. 
  • Operating current is 5MA.
  • Minimum input voltage is 7V.
  • Maximum input voltage is 25V.
  • 5Ω load resistor.
  • Required very minimum external component to fully function.
  • Available in TO-220 and KTE package.
  • It can deliver up to 1.5A of current. 
  • Internal thermal overload and short circuit current limiting protection is available.
  • Junction temperature maximum of 125-degree celsius. 
  • This IC has both internal current limiting and thermal shutdown features. 

Application of LM7805 : 

  • It can be used regulated dual supply. 
  • The constant +5V output regulator microcontrollers and sensors in most of the projects. 
  • It is used in a wide range of circuits. 
  • It is used as a fixed output regulator. 
  • It can be used current limiter for certain applications. 
  • This IC can be used regulated DC voltage regulator. 
  • The output polarity reversal protection circuit. 
  • Reverse bias protection circuit. 
  • Used as a positive regulator in negative configurations. 
  • Used in the current regulator. 
  • LM7805 IC can be used as an adjustable output regulator.

Conclusion : 

  • The most important point is that the input voltage should always be greater than the output voltage. 
  • The input current and the output current are almost identical means that when a 7.5V, 1A supply is given at input the output will be 5V, 1A. 
  • The remaining power is dissipated as heat and hence a heat sink like the one shown below must be used with LM7805 IC. 

LM358 pinout | Introduction | Configuration | Features | Packages | Advantages | Application

As we know that there are available in various forms of 555 timers, single logic gates, microcontrollers, microprocessors, voltage regulators and op-amps like different ICs IC  LM741, LM7805, LM35, LM324 IC, LM337LM338LM339 ICLM340LM1117 and many more ICs are available. Here we have to learn or introduce IC LM358 because it has low power and easy-to-use dual-channel op-amp IC. This IC is designed especially to operate from a single power supply over a wide range of voltages. It is a good, standard operational amplifier and the most important point for this IC is suitable for your needs. LM358 IC is available in a small size as a chip. This IC is most commonly used in the device due to its cost-efficiency. Let us have a deep insight into the introduction, pinout, configuration, features, packages, advantages, and applications of LM358.

Introduction to LM358 :


LM358 consists of two independent compensated operational amplifiers with high gain frequency. LM 358 IC is available in the cheap sized package so this must be used in real-life applications including DC gain block, conventional OP-AMP circuits design, active filters, and transducer amplifier,  This post also gives some information about these ICs like Pinout of LM358, features, Applications, advantages, Pin configuration of LM358, Also give some real-life applications of LM358. So you have to learn some different ideas related to your project you are in the right place to study.

Pinout LM358 :

  • LM 358 has eight (8) pins in total having different individual functions associated with each of them.
  • Pin-1 and pin-8 are the output of the comparator.
  • Pin-2 and pin-6 are inverting inputs.
  • Pin-3 and pin-5 are non-inverting inputs.
  • Pin-4 is the GND terminal.
  • Pin-8 is VCC+.
LM358 IC pinout

LM358 pin configurations :

  • Here I have to represent with a complete pin diagram along with full animations.
  • A properly labelled pin diagram of any device results in better standing of the user, so the users can easily understand pin configurations.
  • The complete pinout diagram along with animation, a real image of LM358 and symbolic representation is shown in the figure below.
LM358 pin configurations

Features of LM358 IC :

  • It consists of 2 OP-AMP internally.
  • The output voltage swing is high.
  • The large DC voltage gain is around 100 dB.
  • Wider bandwidth in 1 MHz(Temperature compensated).
  • The supply current drain is very low.
  • Wider power supply, in the single power supply, is 3V to 32 V while the dual power supply is +or-1.5 V to +or- 16 V.
  • 2mV low input offset voltage.
  • Common mode input voltage range comprises ground.
  • The differential input voltage range is similar to the power supply voltage.
  • Internally frequency compensated for unity gain.
  • Short circuit protected outputs.
  • Soldering pin temperatures at 260 C.
  • The available packages are TO-99, SOIC, DSBGA, and CDIP.

LM358 packages :


The available package is TO-CAN, SOT-23(5), DSBGA, PDIP. all of these packages along with their dimensions and part numbers are given below:

PACKAGES:

PDIP(8) - 9.81 𝝬  6.35 and unit - mm
DSBGA(8) - 1.31  𝝬 1.31 and unit - mm
TO-CAN(8) - 9.08  𝝬 9.09 and unit - mm
SOIC(8) - 4.90  𝝬 3.91 and unit - mm

Advantages of the LM358 IC :

  • Two operational amplifiers are compensated internally.
  • Permits direct sensing close to GND and VOUT.
  • Well suited with all methods of logic.
  • Power drains are appropriate for the operation of the battery.
  • Two internally compensated for OP-AMP.
  • Eliminates the need for dual supplies.

LM358 applications :


LM358 has a wide range of real-life applications, we have represented the major applications of LM358 listed below:
  • It must be used in the DC gain block.
  • It can be used for signal conditioning.
  • It is used for active filters.
  • Current loop transmitter for 4 to 20mA.
  • It can be also used in transducer amplifiers in real-life applications.
  • This IC also be used in operational circuits.
  • It must be used in real-life applications like shock alarm circuits and dark sensor circuits.

Simple Schock alarm circuit using LM358 :

  • The shock alarm circuit using LM358 is very easy to design and it has many applications from home automobiles.
  • The main application of this circuit is as an anti-theft alarm in automobiles. In this circuit, a piezoelectric sensor is used as a shock sensor that has to be mounted on the door which you have to guard. 
  • Here shown in figure LM358 is connected in the inverting Schmitt trigger. The port R1 sets the threshold voltage of the circuit. R1 is used as the feedback resistor.
  • When the piezoelectric sensor has not activated the output from the piezoelectric sensor will be low and so will the output of the IC, So at a time output of the sensor is high and activates as a Schmitt trigger. Then it gives the buzzer sound. 
  • The buzzer remains beeping for some time even if the vibration is detached. This is because when inverting input has little effect when the LM358 IC is triggered and the state can't be easily inverted. So fix the sensor firmly to the surface, wherever you place it and it is always good to place the sensor near to the doorknob. 
  • So here this figure has to use the 3-volt battery as a power supply and regulate the R2 register to obtain the necessary sensitivity.
Schock alarm circuit using LM358


Conclusions :


Here this post gives the all about information IC LM 358 like pinout, pin configurations, applications, advantages, features, and also real-life applications. We hope you all understand this topic. Furthermore, for queries regarding your project please give your feedback by commenting in the comment sections.

LM35 pinout | Introduction | Features | Working | Advantage | Application

As we know that there are available in various forms of 555 timers, single logic gates, microcontroller, microprocessor, voltage regulator and op-amps like different ICs IC  LM741, LM339 ICLM358, LM338LM337, LM7805, and many more ICs are available. LM35 is a precision of IC is a temperature sensor with its output is proportional to the temperature, in the form of Celcius. This IC is most commonly used in an industrial and commercial building where high accuracy of temperature measuring is needed. Here this gives the information about basic introduction about LM35, specification of LM35, Pinout of LM35 and application about LM35, advantages, and lastly working of IM35. Let us have a deep insight into the brief understanding of IM35 pinout. 

Introduction to LM35 :

  • LM35 is a commonly used in temperature sensor, It shows values in the form of output voltage instead of degree celsius. 
  • It does not require any external calibration circuitry.
  • LM35 shows high voltage values than thermocouple and may not need that the output voltage is amplified.
  • The sensitivity of LM35 is 10mV/degree celsius. As the temperature increases, the output voltage also increases.
  • One of the most important characteristics is that it draws just 60uA from its supply and acquires a low heating capacity.
  • The output voltage is always is proportional to the Celsius temperature. The scale factor is .01 V/ C
  • The LM35 temperature sensor is available in many different packages like TO-92 plastic package form, 8 lead surface mount SO-8 small outline package. 
  • LM35 gives temperature output is more precise than thermistor output.

LM35 Pinout Diagram :


LM35 has three pinouts which are given below with figure:

PIN 1: Vcc, it is used as input at this pin we supply +5V input voltage.
PIN 2: At this pin, we get output voltage.
PIN 3: This pin is used for ground.


LM35 pinout diagram


 LM35 Features :

  • Low-cost temperature sensor.
  • Minimum and maximum voltages are 35V and -2V respectively, Typically 5V.
  • Drain current is less than 60uA.
  • Small and hence suitable for remote applications.
  • 0.5 C accuracy guarantee able
  • Can measure temperature ranging from -55 ̊ C to 150 ̊ C.
  • Available in TO-92, TO-220, TO-CAN and SOIC package.
  • The output voltage is directly proportional to temperature there will be a rise of 10mV for every 1 ̊ C rise in temperature.
  • Suitable for remote applications.

LM35 Working :

  • LM35 is a precision of temperature sensor with its output is proportional to the temperature. The sensor is circuitry is sealed and therefore it does not subject to oxidation and other processes. 
  • LM35 temperature can be measured more accurately than with a thermistor. 
  • The output voltage range of this sensor is from -55 to 150 C.  It also has low self-heating power.
  • Operating voltage is 4 to 30 Volts.
  • This sensor is used with an operational amplifier which amplifies a voltage at a certain level.  
  • In operational amplifier there are three terminals, first two are inverting and non-inverting input and the third one is used for the output. 
  • So by using the IC LM35 with an operational amplifier, we can get amplification of output voltages of LM35.
LM35 Working Diagram


LM35 Advantages:

  • Low self-heating.
  • This IC and circuit are not too much complected.
  • It does not require signal conditioning.
  • It requires only 4 to 30 V voltage.

LM35 Applications :

  • It is used for measuring the temperature of a particular environment.
  • Monitoring battery temperature and also provides battery protection from overheating.
  • Providing thermal shutdown for a circuit or a component used in a specific project.
  • It can be used for measuring temperature for HVAC transmission.

Conclusions :

Here this post gives the all about information of IC LM 35 like pinout, applications, advantages, and features. We hope you all understand this topic. Furthermore, query regarding your project please give your feedback by commenting in the comment sections.