on November 21th 882

LM334Z: Features, Pinout, and Datasheet

The LM334Z is a simple and efficient 3-terminal adjustable current source designed for precise current regulation in various electronic applications. Its adjustable output, temperature stability, and ease of integration. This article explores its features, applications, and practical implementation to maximize its potential in your designs.

Catalog

What is the LM334Z?

The LM334Z stands out in electronic components, recognized for its function as a 3-terminal adjustable current source. This device excels in managing current control across a broad dynamic range, covering voltages from 1V to 10V and operational currents that span from 1µA to 10mA. It achieves precision in current regulation, boasting an impressive accuracy of ±3% at its initial setting, enhancing its role within various applications where consistent performance is desired. You can connect an external resistor, which empowers them to fine-tune the output current, thus effectively minimizing the disturbances caused by temperature variations to an insignificant 0.33%/°C.

To bolster stability against temperature fluctuations, incorporate a diode alongside an additional resistor. This method is frequently employed in design strategies aimed at maintaining reliability, even under variable thermal conditions. The LM334Z’s resilience allows it to perform admirably in both DC and AC applications, providing an impressive ability to withstand reverse voltages of up to 20V while keeping reverse current draw minimal. This flexible design not only showcases the component's durability but also opens possibilities for diverse applications, reflecting its wide-ranging utility.

LM334Z Pin Configuration

Pin No	Pin Name	Descrption
1	V+	Positive Voltage Input
2	ADJ	Adjustment Pin
3	V-	Ground or Negative Voltage

LM334Z Symbol, Footprint, and CAD Model

Circuit Schematics Using LM334Z

Features of the LM334Z

Wide Voltage Range (1V–40V)

• Operates across a broad voltage spectrum, enhancing versatility in various applications.

• Precise current regulation of 0.02%/V ensures stability despite voltage fluctuations.

Customizable Output Current (1µA–10mA)

• Offers flexibility to meet diverse device requirements, including sensor biasing and reference current sourcing.

• Maintains accuracy and reliability in applications needing precise current control.

High Accuracy and Versatility

• Delivers dependable performance across consumer, industrial, and complex systems.

• Improves electronic system efficiency with precise operation.

Ease of Design Integration

• Adaptable features simplify integration into different designs, minimizing errors and maximizing performance.

• Combines precision and flexibility to meet the needs of modern electronics.

LM334Z Technical Specifications

Type	Parameter
Mount	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
Operating Temperature	0°C–70°C
Part Status	Obsolete
Base Part Number	LM334
Number of Outputs	1
Body Breadth	4 mm
Termination Type	SOLDER
Output Current	10µA
Forward Voltage	40V
Housing	PLASTIC
REACH SVHC	No SVHC
Mounting Type	Through Hole
Number of Pins	3
Packaging	Bulk
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Function	Current Source
Body Length or Diameter	5 mm
Supply Voltage-Min (Vsup)	1V
Nominal Supply Current	10mA
Accuracy	±3%
Sensors/Transducers Type	TEMPERATURE SENSOR, ANALOG, RESISTANCE BASED
Body Height	5 mm
RoHS Status	ROHS3 Compliant

Applications of the LM334Z

Bias Network Setups

A notable role for the LM334Z is in bias network configurations, which are instrumental in stabilizing amplifier circuits by offering a dependable current reference. For instance, this capability allows audio amplifiers and radio frequency circuits to retain clarity and reliability across different settings, addressing a common challenge in high-precision electronic designs.

Surge Protection Solutions

The LM334Z also finds application in surge protection mechanisms where its accuracy and dependability are needed. By regulating current fluctuations, it acts as a protector for delicate components against potential harm from unexpected surges. This application is use in industrial electronics, where the durability and longevity of equipment are of utmost importance.

Low-Powered Reference Circuits

The LM334Z is frequently utilized to create stable voltage references. Its low power consumption quality makes it ideal for battery-operated devices. Its reliable performance guarantees accurate voltage outputs, benefiting devices that range from portable medical instruments to advanced communication devices.

Ramp Generation

The LM334Z's ability to support ramp generation represents another application. This functionality is good for creating timing sequences in both digital and analog circuits. The device’s precision in managing current flow to produce predictable and stable ramps for timing and synchronization in a variety of technologies. Its usage is pronounced in automation systems and signal processing applications.

LED Driving

Extensive use of the LM334Z is observed in LED driving applications, where it plays a role in regulating current to ensure even brightness and optimal performance of LED arrays. This application is becoming increasingly important as LEDs emerge as the preferred lighting solution in various industries, known for their energy-efficiency and longevity.

Temperature Sensing Applications

Lastly, the LM334Z is effective in temperature sensing applications. Its inherent characteristics allow for accurate responses to shifts in temperature, proving in environments that require constant monitoring and control. Whether in industrial settings or electronic devices, its implementation in temperature sensing solutions fosters safer operations and boosts efficiency.

Package for LM334Z

The LM334Z comes in two package styles: TO-226-3 and TO-92-3. These packages are crafted to simplify integration into diverse electronic applications, offering flexibility in both design aesthetics and spatial considerations.

Physical Dimensions of LM334Z

LM334Z Manufacturer Information

STMicroelectronics establishes itself as an influential force in the semiconductor arena, gaining worldwide acclaim for its diverse range of solutions designed for microelectronics applications. Their competence in silicon technology pairs seamlessly with impressive manufacturing capabilities, allowing them to adeptly maneuver the swiftly changing technological environment. By forging strategic partnerships and collaborations, they have uniquely contributed to the progression of System-on-Chip (SoC) technology, invigorating innovation across various application areas. By harmonizing these technological and strategic strengths, STMicroelectronics continually influences the future of the semiconductor industry, serving as a great partner in the global journey towards technological progression. This sophisticated strategy not only bolsters their market leadership but also demonstrates how an intricate grasp of technological innovation and market tendencies can guide a company towards enduring achievement.

Datasheet PDF

LM334Z Datasheets:

LM134,234,334.pdf