LM723 Voltage Regulator: Datasheet, Schematic, Circuit
Adjustable 2.54mm LM723 PMIC 14 14-DIP (0.300, 7.62mm)
The LM723 is a monolithic integrated programmable voltage regulator. This article covers its datasheet, schematic, circuit and more detailed information about LM723.

LM723 Regulator with Voltages and Maths UEENEEH138A TAFE NSW
LM723 Description
The LM723 is a monolithic integrated programmable voltage regulator, assembled in a 14-lead dual-in-line plastic and SO-14 micro package. The circuit provides internal current limiting. When the output current exceeds 150mA an external NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote shut-down.
LM723 Pinout
LM723 Pinout
LM723 CAD Model
Symbol
LM723 Symbol
Footprint
LM723 Footprint
3D Model
LM723 3D Model
LM723 Features
It is an adjustable voltage regulator which operates in both positive or negative supply operation.
Voltage can be adjusted from 2V to 37V.
The maximum input voltage is 40V.
Output current is 150mA without an external pass transistor. It can be increased to 10A by adding transistors externally.
It has a low standby current gain, very low-temperature drift, and high ripple rejection.
The load and line regulation is 0.03% and 01%.
It has a built-in fold back current limiting.
Its performance is ensured over -55 °C to +125 °C.
LM723 Schematic
LM723 Schematic
Specifications
- TypeParameter
- Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Through Hole - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Through Hole - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
14-DIP (0.300, 7.62mm) - Number of Pins14
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-55°C~125°C - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e4 - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Obsolete - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Number of Terminations14
- ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
NICKEL PALLADIUM GOLD - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
NOT SPECIFIED - Number of Functions1
- Terminal Pitch
The center distance from one pole to the next.
2.54mm - Time@Peak Reflow Temperature-Max (s)
Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.
NOT SPECIFIED - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
LM723 - Pin Count
a count of all of the component leads (or pins)
14 - Number of Outputs1
- Qualification Status
An indicator of formal certification of qualifications.
Not Qualified - Voltage - Input (Max)
Voltage - Input (Max) is a parameter in electronic components that specifies the maximum voltage that can be safely applied to the input of the component without causing damage. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the maximum input voltage can lead to electrical overstress, which may result in permanent damage or failure of the component. It is important to carefully adhere to the specified maximum input voltage to prevent any potential issues and maintain the reliability of the electronic system.
40V - Output Voltage
Output voltage is a crucial parameter in electronic components that refers to the voltage level produced by the component as a result of its operation. It represents the electrical potential difference between the output terminal of the component and a reference point, typically ground. The output voltage is a key factor in determining the performance and functionality of the component, as it dictates the level of voltage that will be delivered to the connected circuit or load. It is often specified in datasheets and technical specifications to ensure compatibility and proper functioning within a given system.
37V - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
Adjustable - Output Configuration
Output Configuration in electronic components refers to the arrangement or setup of the output pins or terminals of a device. It defines how the output signals are structured and how they interact with external circuits or devices. The output configuration can determine the functionality and compatibility of the component in a circuit design. Common types of output configurations include single-ended, differential, open-drain, and push-pull configurations, each serving different purposes and applications in electronic systems. Understanding the output configuration of a component is crucial for proper integration and operation within a circuit.
Positive - Voltage - Output (Min/Fixed)
Voltage - Output (Min/Fixed) refers to the minimum fixed output voltage level that an electronic component, such as a voltage regulator or power supply, is designed to provide under specified load conditions. This parameter ensures that the device consistently delivers a reliable voltage that meets the requirements of the connected circuits or components. It is critical for applications where stable and predictable voltage is necessary for proper operation.
2V - Number of Regulators
A regulator is a mechanism or device that controls something such as pressure, temperature, or fluid flow. The voltage regulator keeps the power level stabilized. A regulator is a mechanism or device that controls something such as pressure, temperature, or fluid flow.
1 - Min Input Voltage
The parameter "Min Input Voltage" in electronic components refers to the minimum voltage level that must be applied to the component for it to operate within its specified parameters. This value is crucial as providing a voltage below this minimum threshold may result in the component malfunctioning or not functioning at all. It is important to adhere to the specified minimum input voltage to ensure the proper operation and longevity of the electronic component. Failure to meet this requirement may lead to potential damage to the component or the overall system in which it is used.
9.5V - Protection Features
Protection features in electronic components refer to the built-in mechanisms or functionalities designed to safeguard the component and the overall system from various external factors or internal faults. These features are crucial for ensuring the reliability, longevity, and safety of the electronic device. Common protection features include overvoltage protection, overcurrent protection, reverse polarity protection, thermal protection, and short-circuit protection. By activating these features when necessary, the electronic component can prevent damage, malfunctions, or hazards that may arise from abnormal operating conditions or unforeseen events. Overall, protection features play a vital role in enhancing the robustness and resilience of electronic components in diverse applications.
Over Current - Current - Quiescent (Iq)
The parameter "Current - Quiescent (Iq)" in electronic components refers to the amount of current consumed by a device when it is in a quiescent or idle state, meaning when it is not actively performing any tasks or operations. This parameter is important because it represents the baseline power consumption of the device even when it is not actively being used. A lower quiescent current (Iq) value is desirable as it indicates that the device is more energy-efficient and will consume less power when not in use, which can help extend battery life in portable devices and reduce overall power consumption in electronic systems. Designers often pay close attention to the quiescent current specification when selecting components for low-power applications or battery-operated devices.
5mA - PSRR
PSRR stands for Power Supply Rejection Ratio. It is a measure of how well a device, such as an amplifier or a voltage regulator, can reject variations in the power supply voltage. A high PSRR value indicates that the device is able to maintain its performance even when the power supply voltage fluctuates. This parameter is important in ensuring stable and reliable operation of electronic components, especially in applications where the power supply voltage may not be perfectly regulated. A good PSRR helps to minimize noise and interference in the output signal of the device.
86db ~ 74dB (100Hz ~ 10kHz) - Load Regulation-Max(%)
Load Regulation-Max(%) is a measure of how much the output voltage of a power supply or voltage regulator changes in response to variations in load current. It is expressed as a percentage of the nominal output voltage and indicates the maximum deviation from the set voltage when the load shifts from no load to full load. A lower value of load regulation signifies better performance, as it indicates that the output voltage remains stable under varying load conditions.
0.6% - Width7.62mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
Parts with Similar Specs
LM723 Application
Basic high and low voltage regulators can be designed by connecting appropriate external components with this IC.
Linear, switching and floating regulators.
Series and shunt regulators.
LM723 Application circuit
Basic Low Voltage Regulator (VO = 2 to 7V)
Basic High Voltage Regulator (VO = 7 to 37V)
LM723 Equivalent
MC1723CP, LM723N, LM723CN, LM723CMX, LM723QML.
Where to use LM723?
LM723 is an adjustable voltage regulator used for shunt regulator, current regulator, and temperature controller. It can able to provide a higher range of output voltage and current up to 10A by simply adding a series pass transistor with it, with having a wider range of operating temperature so the IC is able to withstand for long. Also, it is able used as either a linear or switching type regulator. But this IC is specially designed for series regulator application.
How to use LM723?
To use this IC for the different range of required output voltage, you can proceed with various circuits available in the LM723 datasheet with having your needed output range. For getting an output voltage range from 2v to 7v you can use the circuit below, which is a Basic Voltage Regulator circuit using LM723 voltage regulator IC.
LM723 Circuit
To find the value of resistance R3 you can use the formula below:
R3 = (R1*R2) / (R1+R2)
You can adjust the voltage by using the potentiometer in the circuit to get the required regulated output voltage. For finding the value of output voltage for this circuit you can use the formula below:
Vout = Vref * (R2 / R1 + R2)
LM723 Package
LM723 Package
LM723 Manufacturer
Founded in 1987, STMicroelectronics is a multinational manufacturing industry of electronics and semiconductors, who is headquartered in Geneva, Switzerland. Also,it is the leading industry of semiconductor chip maker in Europe.
Datasheet PDF
- Datasheets :
Popularity by Region
What is a LM723?
The LM723 is a monolithic integrated programmable voltage regulator, assembled in a 14-lead dual-in-line plastic and SO-14 micro package. The circuit provides internal current limiting. When the output current exceeds 150mA an external NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote shut-down.
What advantages and disadvantages does LM723 have?
The advantages of LM723 voltage regulator include proven, low noise, the voltage range is wide, support for external pass transistors, recompense by the user, extremely flexible, complete temperature range accessible, and economical. The disadvantages of LM723 voltage regulator include difficulty, current limiting is not exact, current limiting is sensitive to overload, lowest dropout voltage, least regulated o/p voltage, error amplifier gain is Moderate, error amp bias current, and be careful when using MOSFET pass transistors.
What is LM723’s operating temperature?
-55°C to 125°C.
How does the LM723 work?
LM723 Working Principle: An input voltage is applied to the PIN12 of LM723 to get a constant and regulated output voltage at Pin6. This voltage is then fed back by connecting a resistor and a capacitor to the non-inverting pin of the IC. The two voltages at the inverting and non-inverting pin are compared.
What is the application of IC 723?
The 723 voltage regulator is commonly used for series voltage regulator applications. It can be used as both positive and negative voltage regulators. It has the ability to provide up to 150 mA of current to the load, but this can be increased by more than 10A by using power transistors.
What is a voltage regulator?
Voltage regulator, any electrical or electronic device that maintains the voltage of a power source within acceptable limits. The voltage regulator is needed to keep voltages within the prescribed range that can be tolerated by the electrical equipment using that voltage.
What is the range of output regulated voltage of IC 723? Image result This circuit is capable of supplying a regulated output voltage between the ranges of 7 to 37 volts with a maximum load current of 150 mA.
This circuit is capable of supplying a regulated output voltage between the ranges of 7 to 37 volts with a maximum load current of 150 mA.
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