STMicroelectronics

LM334Z

LM334Z Description

The LM334Z is a precision current source IC designed by STMicroelectronics. It is part of the broader LM334 family and is widely used in applications requiring a stable and accurate current source. This device is housed in a TO92-3 package, making it suitable for through-hole mounting. The LM334Z operates within an input voltage range of 1V to 40V and can deliver a constant output current of 10mA. It is designed to function efficiently within an operating temperature range of 0°C to 70°C. The device is known for its ±3% accuracy, ensuring reliable performance across various applications. The LM334Z is REACH unaffected and RoHS3 compliant, aligning with environmental and safety standards. It also has a moisture sensitivity level of 1 (unlimited), making it robust against environmental factors. Despite its obsolescence, the LM334Z remains a reliable choice for specific applications where its unique features are required.

LM334Z Features

• Precision Current Source: The LM334Z is designed to provide a stable and accurate current source, with an accuracy of ±3%. This precision makes it ideal for applications requiring consistent current output.
• Wide Operating Voltage Range: With an input voltage range of 1V to 40V, the LM334Z can operate across a broad spectrum of power supply voltages, offering flexibility in design.
• High Output Current: The device can deliver a constant output current of 10mA, making it suitable for applications that require higher current sources.
• Robust Packaging: The9 TO2-3 package ensures reliable through-hole mounting, providing mechanical stability and ease of integration into various electronic circuits.
• Environmental Compliance: The LM334Z is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards, which is crucial for modern electronics.
• Moisture Sensitivity Level: With an MSL of 1 (unlimited), the LM334Z is highly resistant to moisture, making it suitable for use in various environmental conditions.
• Wide Operating Temperature Range: The device operates efficiently within a temperature range of 0°C to 70°C, ensuring reliable performance in diverse thermal environments.

LM334Z Applications

The LM334Z is well-suited for a variety of applications where a stable and accurate current source is required. Some specific use cases include:

• Precision Current Sources: Ideal for applications requiring a stable current source, such as in laboratory equipment, test and measurement devices, and precision instrumentation.
• LED Drivers: The LM334Z can be used to drive LEDs with a constant current, ensuring consistent brightness and longevity of the LEDs.
• Battery Chargers: It can serve as a current source for battery charging applications, providing a stable current to ensure safe and efficient charging.
• Analog Circuits: The device can be integrated into analog circuits where a stable current reference is necessary for accurate operation.
• Power Supply Circuits: The LM334Z can be used in power supply circuits to provide a stable current reference, enhancing the overall performance and reliability of the power supply.

Conclusion of LM334Z

The LM334Z from STMicroelectronics is a reliable and accurate current source IC that offers a wide range of features and benefits. Its precision, wide operating voltage range, and high output current make it a versatile component for various applications. Despite being marked as obsolete, the LM334Z remains a valuable choice for specific applications where its unique features are required. Its environmental compliance and robust packaging further enhance its suitability for modern electronics. For designers and engineers looking for a stable and accurate current source, the LM334Z is a proven solution that delivers consistent performance.