LM334Z/NOPB

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LM334Z/NOPB

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IC CURRENT SOURCE 3% TO92-3

  • HerstellerTexas Instruments

  • Herstellerteil #LM334Z/NOPB

  • Paket TO-92-3

  • Auf Lager5931

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Spezifikationen

Attribut Wert
Package / Case Bulk
Part Status Active
Function Current Source
Accuracy ±6%
Voltage - Input 1V ~ 40V
Current - Output Adjustable
Operating Temperature 0°C ~ 70°C
Mounting Type Through Hole

Übersicht

Description

The LM334Z/NOPB is a precision current source integrated circuit designed by Texas Instruments. It is commonly used in applications requiring a constant current over a wide temperature range. The device can deliver currents from 1µA to 10mA with high accuracy and stability. A key feature of the LM334Z/NOPB is its ability to set the output current with only two external resistors, making it easy to configure for various applications.
This IC operates with a voltage range of 1V to 40V, and its temperature coefficient can be adjusted to zero, allowing stable operation across different environments. The LM334Z/NOPB is housed in a TO-92 package, which is compact and suitable for through-hole applications. Typical uses include biasing of active devices in analog circuits, sensor excitation, and precision current applications in both industrial and consumer electronics.
Overall, the LM334Z/NOPB offers a simple and effective solution for generating a stable current source with minimal external components.

Equivalent

The LM334Z/NOPB is a 3-terminal adjustable current source. Equivalent products include:
1. TI LM334 series (e.g., LM334M)
2. Analog Devices' AD590 (for temperature to current conversion)
3. Maxim Integrated's MAX604 (for precise current sources)
4. ON Semiconductor's NSI45020JDT4G
5. Microchip's MCP1700 (for specific current applications with voltage regulation)
Always verify specifications and pin compatibility with the datasheet before substituting.

Features

The LM334Z/NOPB is a precision temperature-dependent current source capable of delivering a current output that is linearly proportional to absolute temperature (PTAT). Key features include:
1. Current Range: It operates over a wide range of currents from 1 µA to 10 mA.
2. Temperature Operation: Functions efficiently over a temperature range from -40°C to +85°C.
3. Voltage Operation: It has a low operating voltage requirement, typically around 1V.
4. Linearity: Provides excellent linearity over the entire current range.
5. Programmability: The current output is easily programmed with a single resistor.
6. Drift: Exhibits low drift, making it suitable for precision applications.
7. Package: Available in a TO-92 package, which is compact and easy to handle.
8. Applications: Ideal for use in temperature compensation, battery charging circuits, and current reference applications in various electronic devices.
The LM334Z/NOPB offers reliability and precision, making it a versatile choice for temperature-dependent current regulation needs.

Pinout

The LM334Z/NOPB is a 3-pin adjustable current source from Texas Instruments. It is designed to provide a constant current, making it useful in applications requiring precision current regulation, such as sensor excitation or biasing. The three pins include:
1. R (Resistor): This pin is used to set the current by connecting a resistor between this pin and the V+ pin. The value of the resistor determines the output current according to the formula I = 67.7mV/Rset.
2. V+: This is the positive supply voltage pin, where the device receives its operating power. It should be connected to the positive side of the power supply.
3. V- (Common): This is the ground or common return path for the current flowing through the device.
The device operates over a wide range of voltages (up to about 40V) and provides a current range from 1µA to 10mA. Its simplicity, low cost, and versatility make it suitable for various low-power applications.

Manufacturer

The LM334Z/NOPB is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is an American technology company headquartered in Dallas, Texas. It is one of the largest semiconductor companies in the world, focusing on the design and manufacture of semiconductors and various integrated circuits. TI's products are used in a wide range of electronic devices, including calculators, personal computers, and mobile phones, as well as in industrial applications. The company is known for its innovation in analog and embedded processing, serving various industries such as automotive, industrial, and consumer electronics.

Application

The LM334Z/NOPB is a precision current source ideal for applications requiring a stable current over varying temperatures and voltages. Key application areas include:
1. Temperature Sensors: Acts as a temperature-dependent current source for thermometers.
2. Battery Chargers: Provides a constant charging current.
3. LED Drivers: Supplies stable current for consistent LED brightness.
4. Biasing Circuits: Used in biasing transistors and other components.
5. Current References: Offers a reliable reference in analog and mixed-signal ICs.
6. 4-20 mA Current Loop Systems: Ideal for industrial control systems requiring current loops.
Its versatility across voltage and temperature ranges makes it suitable for various electronic and industrial uses.

Package

The LM334Z/NOPB is a precision current source IC, and it comes in a TO-92 package. This package type is a three-pin, small, and low-cost option commonly used for through-hole components in electronic circuits.

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