LM234 Current Source: Pinout, 3D Model and Datasheet

Sophie

Published: 29 October 2021 | Last Updated: 29 October 2021

1999

LM234DT

LM234DT

STMicroelectronics

8 Terminations 8 Pin LM234 Current regulator 1 Outputs -25°C~100°C Min 1V Max 40V

Purchase Guide

8 Terminations 8 Pin LM234 Current regulator 1 Outputs -25°C~100°C Min 1V Max 40V

The LM234 is a 3-terminal adjustable Current Source characterized by an operating current range of 10000:1, an excellent current regulation, a wide dynamic voltage range of 1V to 10V. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

LM234 Pinout

Pinout.png

Pinout

LM234 CAD Model

PCB Symbol.png

symbol


PCB Footprint.png

footprint


3D Model.png

3D Model

LM234 Overview

The LM234 is a 3-terminal adjustable current source characterized by an operating current range of 10000:1, an excellent current regulation, a wide dynamic voltage range of 1V to 10V. The current is determined by an external resistor without requiring other external components. Reverse voltages of up to 20V will only draw a current of several microamperes. This enables the circuit to operate as a rectifier and as a source of current in a.c. applications. For the LM234, the voltage on the control pin is 64mV at +25°C and is directly proportional to the absolute temperature (°K). The simplest external resistor connection generates a current with approximately 0.33%/°C temperature dependence. Zero drift can be obtained by adding an additional resistor and a diode to the external circuit.

This article provides you with a basic overview of the LM234, including its pin descriptions, features and specifications, etc., to help you quickly understand what LM234 is.

LM234 Features

• Operates from 1V to 40V

• 0.02%/V current regulation

• Programmable from 1µA to 10mA

• ±3% initial accuracy

Specifications

STMicroelectronics LM234DT technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics LM234DT.
  • Type
    Parameter
  • Lifecycle Status

    Lifecycle Status refers to the current stage of an electronic component in its product life cycle, indicating whether it is active, obsolete, or transitioning between these states. An active status means the component is in production and available for purchase. An obsolete status indicates that the component is no longer being manufactured or supported, and manufacturers typically provide a limited time frame for support. Understanding the lifecycle status is crucial for design engineers to ensure continuity and reliability in their projects.

    ACTIVE (Last Updated: 7 months ago)
  • Factory Lead Time
    10 Weeks
  • 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.

    Surface Mount
  • 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.

    Surface Mount
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    8-SOIC (0.154, 3.90mm Width)
  • Number of Pins
    8
  • Weight
    4.535924g
  • 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.

    -25°C~100°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.

    Tape & Reel (TR)
  • 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.

    Active
  • 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 Terminations
    8
  • 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
  • Temperature Coefficient

    The resistance-change factor per degree Celsius of temperature change is called the temperature coefficient of resistance. This factor is represented by the Greek lower-case letter “alpha” (α). A positive coefficient for a material means that its resistance increases with an increase in temperature.

    33 ppm/°C
  • 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 (Ni/Pd/Au)
  • Max Power Dissipation

    The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.

    400mW
  • 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
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    GULL WING
  • 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.

    260
  • 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.

    30
  • 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.

    LM234
  • Function

    The parameter "Function" in electronic components refers to the specific role or purpose that the component serves within an electronic circuit. It defines how the component interacts with other elements, influences the flow of electrical signals, and contributes to the overall behavior of the system. Functions can include amplification, signal processing, switching, filtering, and energy storage, among others. Understanding the function of each component is essential for designing effective and efficient electronic systems.

    Current Source
  • Number of Outputs
    1
  • 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.

    Analog
  • Max Output Current

    The maximum current that can be supplied to the load.

    10mA
  • Max Supply Voltage

    In general, the absolute maximum common-mode voltage is VEE-0.3V and VCC+0.3V, but for products without a protection element at the VCC side, voltages up to the absolute maximum rated supply voltage (i.e. VEE+36V) can be supplied, regardless of supply voltage.

    40V
  • Min Supply Voltage

    The minimum supply voltage (V min ) is explored for sequential logic circuits by statistically simulating the impact of within-die process variations and gate-dielectric soft breakdown on data retention and hold time.

    1V
  • Operating Supply Current

    Operating Supply Current, also known as supply current or quiescent current, is a crucial parameter in electronic components that indicates the amount of current required for the device to operate under normal conditions. It represents the current drawn by the component from the power supply while it is functioning. This parameter is important for determining the power consumption of the component and is typically specified in datasheets to help designers calculate the overall power requirements of their circuits. Understanding the operating supply current is essential for ensuring proper functionality and efficiency of electronic systems.

    10mA
  • Accuracy

    Accuracy in electronic components refers to the degree to which a measured value agrees with the true or accepted value. It evaluates the precision of a component in providing correct output or measurement under specified conditions. High accuracy indicates minimal deviation from the actual value, while low accuracy shows significant error in measurement. This parameter is crucial in applications where precise data is essential for reliable performance and decision-making.

    ±3%
  • Max Input Voltage

    Max Input Voltage refers to the maximum voltage level that an electronic component can safely handle without getting damaged. This parameter is crucial for ensuring the proper functioning and longevity of the component. Exceeding the specified maximum input voltage can lead to overheating, electrical breakdown, or permanent damage to the component. It is important to carefully adhere to the manufacturer's guidelines regarding the maximum input voltage to prevent any potential issues and maintain the reliability of the electronic device.

    40V
  • Reference Type

    a code object that is not stored directly where it is created, but that acts as a kind of pointer to a value stored elsewhere.

    Adjustable
  • Forward Voltage

    the amount of voltage needed to get current to flow across a diode.

    40V
  • Ambient Temperature Range High

    This varies from person to person, but it is somewhere between 68 and 77 degrees F on average. The temperature setting that is comfortable for an individual may fluctuate with humidity and outside temperature as well. The temperature of an air conditioned room can also be considered ambient temperature.

    100°C
  • Height
    1.75mm
  • Length
    4.9mm
  • Width
    3.9mm
  • REACH SVHC

    The parameter "REACH SVHC" in electronic components refers to the compliance with the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation regarding Substances of Very High Concern (SVHC). SVHCs are substances that may have serious effects on human health or the environment, and their use is regulated under REACH to ensure their safe handling and minimize their impact.Manufacturers of electronic components need to declare if their products contain any SVHCs above a certain threshold concentration and provide information on the safe use of these substances. This information allows customers to make informed decisions about the potential risks associated with using the components and take appropriate measures to mitigate any hazards.Ensuring compliance with REACH SVHC requirements is essential for electronics manufacturers to meet regulatory standards, protect human health and the environment, and maintain transparency in their supply chain. It also demonstrates a commitment to sustainability and responsible manufacturing practices in the electronics industry.

    No SVHC
  • Radiation Hardening

    Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.

    No
  • 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
0 Similar Products Remaining

LM234 Functional Block Diagram

Schematic diagram.png

Schematic diagram


LM234 Equivalent

LM234D, Three Terminal Adjustable Current Source, Manufacturer is STMicroelectronics. 

Parts with Similar Specs

The three parts on the right have similar specifications to STMicroelectronics & LM234DT.

LM234 Application

• Computers

• Controllers

• Intelligent instruments

LM234 Package

package.png

package


mechanical data.png

mechanical data

LM234 Manufacturer

STMicroelectronics is a globally recognized semiconductor company. They are dedicated to developing semiconductor solutions for various microelectronics applications. STMicroelectronics enjoys unrivaled silicon and system expertise, strong manufacturing strength, IP portfolio,and solid relationships with their strategic partners. Based on these advantages, STMicroelectronics has become a pioneer in System-on-Chip (SoC) technology and its products has a positive effect in realizing today's convergence trends.

Datasheet PDF

Download datasheets and manufacturer documentation for STMicroelectronics LM234DT.

Trend Analysis

Frequently Asked Questions

What is the essential property of the LM234?

The LM234 is a 3-terminal adjustable current source characterized by an operating current range of 10000:1, an excellent current regulation, a wide dynamic voltage range of 1V to 10V.

Is the LM234 an excellent remote control temperature sensor?

The LM234 is excellent remote controlled temperature sensor because its operation as current sources preserves its accuracy even in the case of long connecting wires.

If LM234 were used as the active load of a transistor amplifier, what would happen to the noise at the input?

If the LM234 is used as an active load for a transistor amplifier, the noise at the input will increase by about 12dB.
LM234DT

STMicroelectronics

In Stock: 17500

United States

China

Canada

Japan

Russia

Germany

United Kingdom

Singapore

Italy

Hong Kong(China)

Taiwan(China)

France

Korea

Mexico

Netherlands

Malaysia

Austria

Spain

Switzerland

Poland

Thailand

Vietnam

India

United Arab Emirates

Afghanistan

Åland Islands

Albania

Algeria

American Samoa

Andorra

Angola

Anguilla

Antigua & Barbuda

Argentina

Armenia

Aruba

Australia

Azerbaijan

Bahamas

Bahrain

Bangladesh

Barbados

Belarus

Belgium

Belize

Benin

Bermuda

Bhutan

Bolivia

Bonaire, Sint Eustatius and Saba

Bosnia & Herzegovina

Botswana

Brazil

British Indian Ocean Territory

British Virgin Islands

Brunei

Bulgaria

Burkina Faso

Burundi

Cabo Verde

Cambodia

Cameroon

Cayman Islands

Central African Republic

Chad

Chile

Christmas Island

Cocos (Keeling) Islands

Colombia

Comoros

Congo

Congo (DRC)

Cook Islands

Costa Rica

Côte d’Ivoire

Croatia

Cuba

Curaçao

Cyprus

Czechia

Denmark

Djibouti

Dominica

Dominican Republic

Ecuador

Egypt

El Salvador

Equatorial Guinea

Eritrea

Estonia

Eswatini

Ethiopia

Falkland Islands

Faroe Islands

Fiji

Finland

French Guiana

French Polynesia

Gabon

Gambia

Georgia

Ghana

Gibraltar

Greece

Greenland

Grenada

Guadeloupe

Guam

Guatemala

Guernsey

Guinea

Guinea-Bissau

Guyana

Haiti

Honduras

Hungary

Iceland

Indonesia

Iran

Iraq

Ireland

Isle of Man

Israel

Jamaica

Jersey

Jordan

Kazakhstan

Kenya

Kiribati

Kosovo

Kuwait

Kyrgyzstan

Laos

Latvia

Lebanon

Lesotho

Liberia

Libya

Liechtenstein

Lithuania

Luxembourg

Macao(China)

Madagascar

Malawi

Maldives

Mali

Malta

Marshall Islands

Martinique

Mauritania

Mauritius

Mayotte

Micronesia

Moldova

Monaco

Mongolia

Montenegro

Montserrat

Morocco

Mozambique

Myanmar

Namibia

Nauru

Nepal

New Caledonia

New Zealand

Nicaragua

Niger

Nigeria

Niue

Norfolk Island

North Korea

North Macedonia

Northern Mariana Islands

Norway

Oman

Pakistan

Palau

Palestinian Authority

Panama

Papua New Guinea

Paraguay

Peru

Philippines

Pitcairn Islands

Portugal

Puerto Rico

Qatar

Réunion

Romania

Rwanda

Samoa

San Marino

São Tomé & Príncipe

Saudi Arabia

Senegal

Serbia

Seychelles

Sierra Leone

Sint Maarten

Slovakia

Slovenia

Solomon Islands

Somalia

South Africa

South Sudan

Sri Lanka

St Helena, Ascension, Tristan da Cunha

St. Barthélemy

St. Kitts & Nevis

St. Lucia

St. Martin

St. Pierre & Miquelon

St. Vincent & Grenadines

Sudan

Suriname

Svalbard & Jan Mayen

Sweden

Syria

Tajikistan

Tanzania

Timor-Leste

Togo

Tokelau

Tonga

Trinidad & Tobago

Tunisia

Turkey

Turkmenistan

Turks & Caicos Islands

Tuvalu

U.S. Outlying Islands

U.S. Virgin Islands

Uganda

Ukraine

Uruguay

Uzbekistan

Vanuatu

Vatican City

Venezuela

Wallis & Futuna

Yemen

Zambia

Zimbabwe

Related Parts More