LM334 adjustable constant current source

The LM334 is an adjustable 3-terminal current source capable of supplying a constant current over a wide range of operating voltages. It is designed to provide a precise, stable current that can be adjusted with external resistors. The device operates with a wide input voltage range and features low temperature coefficient and wide dynamic range. It is ideal for sensor excitation, battery charging, and other precision current source applications.

Key Features:

• Adjustable Current: 1µA to 10mA
• Wide Input Voltage Range: 1V to 40V
• Low Temperature Coefficient: 0.33%/°C (typical)
• Wide Dynamic Range: Ensures consistent performance over a wide range of conditions
• High Accuracy: Precise current regulation
• Simple Adjustment: Easily adjustable with external resistor
• Low Operating Voltage: Operates down to 1V

Technical Specifications:

• Input Voltage Range: 1V to 40V
• Adjustable Current Range: 1µA to 10mA
• Temperature Coefficient: 0.96mV/°C (typical)
• Reference Voltage: 64mV (typical)
• Temperature Range: -40°C to +85°C
• Package: 3-pin TO-92, SOIC-8, or SOT-23
• Quiescent Current: 1µA (typical)
• Accuracy: ±3% at 25°C

Applications:

• Sensor Excitation: Provides stable current for various types of sensors.
• Battery Charging: Ideal for constant current battery charging applications.
• LED Drivers: Suitable for driving LEDs with a constant current.
• Current Limiting: Used in circuits requiring precise current limiting.
• Analog Circuits: Suitable for use in a variety of analog current source applications.
• Precision Current Sources: Ideal for use in laboratory and instrumentation settings.

Datasheet:
For detailed technical information, refer to the LM334 adjustable constant current source datasheet.