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
- 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
- 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.