Analog Devices Inc. LT3092 Programmable 2-Terminal Current Source
Analog Devices Inc. LT3092 Programmable 2-Terminal Current Source requires only two resistors to set an output current between 0.5mA and 200mA. A multitude of analog techniques lends themselves to actively programming the output current. The LT3092 is stable without input and output capacitors, offering high DC and AC impedance. This feature allows operation in intrinsically safe applications. The SET pin features 1% initial accuracy and a low-temperature coefficient. Current regulation is better than 10ppm/V from 1.5V to 40V.
The Analog Devices Inc. LT3092 can operate in a 2-terminal current source configuration in series with signal lines. It is ideal for driving sensors, remote supplies, and as a precision current limiter for local supplies. Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting, and thermal limiting. The LT3092 is offered in the 8-lead TSOT-23, 3-lead SOT-223, and 8-lead 3mm × 3mm DFN packages.
Features
- A programmable 2-terminal current source
- 200mA maximum output current
- 1.2V to 40V wide input voltage range
- Input/output capacitors are not required
- A resistor ratio sets the output current
- 1% initial set pin current accuracy
- Reverse-voltage protection
- Reverse-current protection
- < 0.001%/V line regulation typical
- Current limit and thermal shutdown protection
- Available in 8-Lead SOT-23, 3-Lead SOT-223, and 8-Lead 3mm × 3mm DFN packages
Applications
- 2-terminal floating current source
- GND referred current source
- Variable current source
- In-line limiter
- Intrinsic safety circuits
Videos
Typical Application
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Publicado: 2022-09-13
| Actualizado: 2025-07-31