Analog Devices Inc. LT3092ETS8#TRMPBF

Overview

LT3092ETS8#TRMPBF from Analog Devices is a 2-terminal programmable current source IC requiring only two external resistors to set output current from 0.5mA to 200mA. It operates over 1.2V–40V input range, delivers <0.001%/V line regulation, and features reverse-voltage/reverse-current protection - ideal for intrinsically safe sensor biasing and remote current-loop interfaces.

For engineers reviewing the LT3092ETS8#TRMPBF datasheet, LT3092ETS8#TRMPBF pinout, LT3092ETS8#TRMPBF application, or LT3092ETS8#TRMPBF equivalent, key selection criteria include its resistor-programmable 2-terminal architecture, 10µA SET pin reference accuracy (±1%), dropout voltage ≤1.45V at 200mA, Kelvin-sensed current regulation (<10ppm/V), and TSOT-23-8 package compatibility with space-constrained industrial and automotive signal conditioning designs.

Technical Context

The LT3092ETS8#TRMPBF implements a precision 10µA zero-TC reference current source feeding the noninverting input of a high-gain power op-amp, enabling accurate current mirroring via R_SET/R_OUT ratio programming. Its internal architecture eliminates need for input/output capacitors while maintaining >90dB ripple rejection at 120Hz.

It integrates reverse-battery protection, thermal shutdown with hysteresis, and current limiting (200mA min). The device supports both floating and GND-referred configurations, with SET pin offset voltage specified at ±2mV and temperature coefficient <10ppm/°C - critical for stable operation across –40°C to 125°C.

Key Specifications

Pinout & Package

LT3092ETS8#TRMPBF uses the 8-lead plastic TSOT-23 package (TS8), with exposed pad not present. Pin 1 is OUT, Pin 2 is OUT, Pin 3 is IN, Pin 4 is SET, Pin 5 is NC, Pin 6 is NC, Pin 7 is IN, Pin 8 is NC. The dual OUT and dual IN pins are internally connected and must be tied together externally for proper operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-terminal current source applications.

Compared with LM334Z/NOPB and MAX40007AUT+T, LT3092ETS8#TRMPBF uniquely combines 2-terminal operation, 40V input range, reverse-protection, and AEC-Q100 qualification - making it the only option for robust, wide-range, safety-compliant current sourcing in industrial and automotive environments.

Availability

LT3092ETS8#TRMPBF is available at Aetrix Electronics and suitable for 4–20mA loop transmitters, remote sensor biasing, intrinsic safety barriers, and programmable current limiting requiring stable component supply across extended temperature ranges.

Supply support for LT3092ETS8#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LT3092ETS8#TRMPBF belongs to Analog Devices' precision current source product line, engineered specifically for applications demanding accurate, capacitor-free, and robust current generation in harsh or safety-critical environments.

FAQ

What is the minimum load current required for LT3092ETS8#TRMPBF to regulate properly?

The LT3092ETS8#TRMPBF requires a minimum load current of 300µA to maintain regulation, as specified in the Electrical Characteristics table. This value corresponds to the device's quiescent current, which is delivered entirely to the output. Setting the programmed current below 0.5mA will cause loss of regulation - therefore, LT3092ETS8#TRMPBF must be configured for ≥0.5mA output to ensure stable operation across temperature and line variations.

Can LT3092ETS8#TRMPBF operate without input or output capacitors?

Yes, LT3092ETS8#TRMPBF is explicitly designed for capacitor-free operation and remains stable without input or output bypass capacitors in most configurations. Its high DC and AC impedance architecture eliminates reliance on external capacitance for loop stability. However, if long PCB traces or cables introduce inductive reactance, series damping resistors or RC compensation networks may be needed - as detailed in the Applications Information section of the LT3092ETS8#TRMPBF datasheet.

How does the SET pin function in LT3092ETS8#TRMPBF, and what is its accuracy?

The SET pin of LT3092ETS8#TRMPBF sinks a precision 10µA reference current with ±1% initial accuracy and low temperature coefficient (<10ppm/°C). This current flows through an external R_SET resistor to generate a reference voltage, which - along with R_OUT - determines output current via I_OUT = 10µA × (R_SET/R_OUT) + 10µA. The SET pin's 2mV max offset voltage directly impacts low-current accuracy, making high-quality insulation and guarding essential for sub-0.1% performance.

Is LT3092ETS8#TRMPBF suitable for automotive applications?

Yes, LT3092ETS8#TRMPBF is rated for –40°C to +125°C operation and is AEC-Q100 qualified for automotive applications. It includes reverse-battery protection, thermal shutdown with hysteresis, and robust current limiting - making it appropriate for under-hood sensor excitation, body electronics current sources, and infotainment system biasing. Its TSOT-23-8 package supports automated assembly and meets automotive reliability requirements when sourced through qualified channels.

What package type and pin configuration does LT3092ETS8#TRMPBF use?

LT3092ETS8#TRMPBF uses the 8-lead plastic TSOT-23 (TS8) package. Pin 1 and Pin 2 are both OUT, Pin 3 and Pin 7 are both IN, Pin 4 is SET, and Pins 5, 6, and 8 are no-connect. The dual OUT and dual IN pins are internally bonded and must be shorted externally on the PCB to ensure proper current sharing and thermal performance - this configuration reduces effective trace resistance and improves power handling versus single-pin alternatives.