LT3092EST 200mA Negative LDO 0.8μV RMS Noise 76dB PSRR 1.5-36V Input SOT-223 -40°C to +125°C

LT3092EST 200mA Negative LDO 0.8andmu;V RMS Noise 76dB PSRR 1.5-36V Input SOT-223 -40anddeg;C to +125anddeg;C

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FeaTures

andnbsp;Programmable 2-Terminal Current Source

Maximum Output Current: 200mA

Wide Input Voltage Range: 1.2V to 40V

andnbsp;Input/Output Capacitors Not Required

andnbsp;Resistor Ratio Sets Output Current

andnbsp;Initial Set Pin Current Accuracy: 1%

andnbsp;Reverse-Voltage Protection

andnbsp;Reverse-Current Protection

andnbsp;andlt;0.001%/V Line Regulation Typical

andnbsp;Current Limit and Thermal Shutdown Protection

andnbsp;Available in 8-Lead SOT-23, 3-Lead SOT-223 and 8-Lead 3mm andtimes; 3mm DFN Packages

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applicaTions

andnbsp;2-Terminal Floating Current Source

andnbsp;GND Referred Current Source

andnbsp;Variable Current Source

andnbsp;In-Line Limiter

andnbsp;Intrinsic Safety Circuits

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DescripTion

The LTandreg;3092 is a programmable 2-terminal current source. It requires only two resistors to set an output current between 0.5mA and 200mA. A multitude of analog techniques lend 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 low tem perature coefficient. Current regulation is better than 10ppm/V from 1.5V to 40V.

The LT3092 can operate in a 2-terminal current source configuration in series with signal lines. It is ideal for driv ing 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 andtimes; 3mm DFN packages.

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INFORMATION

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Drawing

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