STMicroelectronics LM334DT - Adjustable Current Source

The LM334DT is a versatile and adjustable current source from the renowned semiconductor manufacturer, STMicroelectronics. This precision device is designed to provide a constant current over a wide range of operating voltages, making it an essential component in various electronic applications, including battery chargers, LED drivers, and biasing elements for analog circuits.

Key Features

• Adjustable Current: The output current can be set from microamps to milliamps with a single external resistor. This allows for flexibility in design and application-specific current sourcing.
• Wide Operating Voltage: Ranging from 1V to 40V, the LM334DT is capable of functioning across a broad spectrum of power supplies, ensuring compatibility with a variety of circuits.
• Low Temperature Coefficient: The device features a temperature-independent current output, with a low temperature coefficient of 0.2%/°C, ensuring stable performance over a wide temperature range.
• Three-Terminal Adjustable: The simple three-terminal design facilitates easy integration into existing circuits without the need for complex wiring or additional components.

Applications

• Current limiting configurations
• Charging circuits for batteries
• Temperature sensing and control
• LED brightness regulation
• Analog circuit biasing
• Constant current regulators

Product Specifications

The LM334DT is encapsulated in a surface-mount TO-252 (DPAK) package, which is suitable for automated assembly processes and occupies minimal space on a printed circuit board (PCB). Its robust design ensures reliability and longevity in industrial-grade applications.

With its precision current regulation and ease of use, the LM334DT from STMicroelectronics is an excellent choice for designers looking to implement an adjustable current source with minimal external components and reliable performance.

For detailed technical specifications, application notes, and support resources, please refer to the official STMicroelectronics documentation available on their website or through authorized distributors.