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Analog Devices Inc. LT3092ETS8#TRPBF
- Part No.:
- LT3092ETS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LT3092ETS8#TRPBF.pdf
- Description:
- IC CURRENT SOURCE 1% TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:8,085
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Product details
Overview
LT3092ETS8#TRPBF 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 with 1.2V–40V input voltage 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#TRPBF datasheet, LT3092ETS8#TRPBF pinout, LT3092ETS8#TRPBF application, or LT3092ETS8#TRPBF equivalent, key selection considerations include its resistor-ratio-based programming, capacitor-free stability, ±2mV offset voltage, 10µA SET pin reference accuracy, and TSOT-23 package suitability for space-constrained industrial and automotive current-source designs.
Technical Context
The LT3092ETS8#TRPBF implements a precision 10µA internal reference current source feeding the noninverting input of a power op-amp, enabling Kelvin-sensed current regulation. Its architecture eliminates need for input/output capacitors by maintaining high DC/AC impedance across 1.2V–40V VIN–VOUT differential.
It supports both floating and ground-referred configurations, with dropout voltage as low as 1.22V at 10mA load and thermal shutdown + current limiting for fault robustness. The SET pin's 1% initial accuracy and <10ppm/V regulation over 1.5V–40V ensure stable current setting under varying supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Range | 0.5mA to 200mA - programmable via resistor ratio RSET/ROUT referenced to 10µA SET pin current |
| Input Voltage Range | 1.2V to 40V - enables operation across wide supply rails including 3.3V, 5V, 12V, and 24V industrial systems |
| Line Regulation | <0.001%/V typical - ensures minimal current drift over input voltage variation, critical for precision sensing |
| SET Pin Current Accuracy | ±1% initial tolerance, 10µA nominal - provides direct scaling basis for output current with predictable error budget |
| Offset Voltage (VOUT–VSET) | ±2mV max - limits absolute current error at low output levels (e.g., ≤0.2% error at 1mA) |
| Dropout Voltage | 1.22V at 10mA, 1.45V at 200mA - defines minimum headroom required between IN and OUT pins |
| RMS Output Noise | 0.7nA RMS (10Hz–100kHz) - low-noise performance suitable for precision analog sensor excitation |
Pinout & Package
LT3092ETS8#TRPBF uses the 8-lead plastic TSOT-23 package (TS8), with exposed pad not present. Pin 1 = OUT, Pin 2 = OUT, Pin 3 = IN, Pin 4 = SET, Pin 5 = NC, Pin 6 = NC, Pin 7 = IN, Pin 8 = NC. Dual OUT and dual IN pins reduce trace inductance and improve thermal/power delivery in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, Pin 2 (OUT) | Power Output Terminal | Low-impedance buffered output node; tied internally to exposed tab in other packages; must be connected to load return path |
| Pin 3, Pin 7 (IN) | Power Input Terminal | Bias and load current supply node; requires ≥1.22V above OUT for regulation; dual pins lower effective series resistance |
| Pin 4 (SET) | Reference Current Source Terminal | Sinks precise 10µA current; voltage at this pin sets amplifier reference point; sensitive to leakage-requires guard ring |
| Pin 5, Pin 6, Pin 8 (NC) | No Connection | Internally unconnected; may be left floating, tied to OUT, or grounded-no electrical impact on operation |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates without input/output bypass capacitors - eliminates ESR-related instability and simplifies layout in safety-critical circuits |
| Reverse-battery protection | Withstands –40V on IN relative to OUT - prevents damage during incorrect polarity connection in field-deployed equipment |
| 2-terminal floating configuration | Enables insertion directly into signal lines (e.g., 4–20mA loops) without ground reference - supports intrinsic safety compliance |
| Thermal shutdown with hysteresis | Activates at TJ ≥125°C and holds until TJ drops ~15°C - prevents thermal runaway during sustained overload or poor heatsinking |
| AEC-Q100 qualified | Rated for automotive-grade temperature range (–40°C to 125°C) - validated for engine bay and ADAS sensor biasing applications |
Applications
| 4–20mA Current Loop Transmitter | Industrial Sensor Biasing |
|---|---|
Use Scenario: Providing regulated excitation current to RTD, strain gauge, or pressure sensor in loop-powered field transmitter. IC Role / Device Role / Timing Role: 2-terminal floating current source inserted in series with sensor and loop wiring - no ground reference needed. Use Value: Enables intrinsic safety compliance by eliminating energy-storing capacitors; maintains 0.1% current accuracy over 1.2V–40V loop supply variation. | Use Scenario: Supplying precision bias current to MEMS accelerometers or optical sensors in PLC I/O modules. IC Role / Device Role / Timing Role: GND-referred current source driving sensor anode while sharing common return with ADC reference. Use Value: Delivers stable 100µA–10mA excitation with <2mV offset error, minimizing sensor self-heating drift and improving measurement repeatability. |
| Automotive Cabin Temperature Sensor | LED Constant-Current Driver |
Use Scenario: Biasing NTC thermistor in HVAC control unit with AEC-Q100-compliant current source. IC Role / Device Role / Timing Role: Programmable current source operating from 5V or 12V vehicle battery rail with reverse-polarity protection. Use Value: Survives load dump and cold-crank transients; maintains ±1% current accuracy across –40°C to 125°C ambient - improves cabin temperature resolution to ±0.1°C. | Use Scenario: Driving single high-brightness LED in automotive interior lighting or status indicators. IC Role / Device Role / Timing Role: Low-headroom current limiter placed in series with LED cathode, referenced to system ground. Use Value: Provides 20–150mA constant current with <0.001%/V line regulation - eliminates brightness variation during battery voltage sag (9V–16V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-terminal programmable current source applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3094EDD#TRPBF | Higher PSRR (≥90dB), lower noise (0.3nA RMS), DFN-8 package - adds integrated compensation network for improved stability with capacitive loads | Targeted at ultra-low-noise sensor biasing and medical instrumentation where ripple rejection >80dB is mandatory | Select when noise floor or AC line rejection exceeds LT3092ETS8#TRPBF capability; requires PCB redesign due to different footprint and thermal pad |
| MAX40007AUT+T | Single-supply, rail-to-rail output, 1.7V–5.5V range, SOT-23-6 - lacks reverse-voltage protection and has 50mA max output | Optimized for low-voltage portable electronics (e.g., wearables) with tight board space and battery operation | Choose only for sub-5V, sub-50mA applications where reverse protection and wide VIN are not required; not drop-in compatible |
Compared with LT3092ETS8#TRPBF, LT3094EDD#TRPBF offers superior noise and PSRR in a larger DFN package, while MAX40007AUT+T trades protection and output range for ultra-low-voltage operation - neither matches the LT3092ETS8#TRPBF's combination of 40V tolerance, 200mA drive, and intrinsic safety readiness in TSOT-23.
Availability
LT3092ETS8#TRPBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive cabin sensors, and 4–20mA loop transmitters requiring stable component supply with full AEC-Q100 qualification and long-term production support.
Supply support for LT3092ETS8#TRPBF 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#TRPBF belongs to the LT® Precision Current Sources product line, designed specifically for applications demanding accurate, stable, and protected current delivery in harsh environments - including intrinsic safety barriers, remote sensor excitation, and automotive subsystems.
FAQ
What is the minimum load current required for LT3092ETS8#TRPBF to maintain regulation?
The LT3092ETS8#TRPBF 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 - the LT3092ETS8#TRPBF is not guaranteed to operate stably below this threshold.
Can LT3092ETS8#TRPBF be used without any external capacitors?
Yes, the LT3092ETS8#TRPBF is explicitly designed for capacitor-free operation and remains stable without input or output bypass capacitors under typical conditions. Its high DC/AC output impedance enables this behavior. However, if long PCB traces or cables introduce inductive reactance, series damping resistors or RC compensation networks may be needed - stability must be verified in situ per the Applications Information section of the LT3092ETS8#TRPBF datasheet.
How does the SET pin function in LT3092ETS8#TRPBF, and what is its accuracy?
The SET pin of the LT3092ETS8#TRPBF sources a precision 10µA reference current with ±1% initial accuracy and low temperature coefficient (<10ppm/°C). This current flows through an external RSET resistor to generate a reference voltage applied to the error amplifier's noninverting input. Output current is calculated as IOUT = (10µA × RSET)/ROUT + 10µA. Leakage into/out of the SET pin must be minimized (<10nA) to preserve accuracy.
Does LT3092ETS8#TRPBF support reverse-voltage protection, and what is its rating?
Yes, the LT3092ETS8#TRPBF includes integrated reverse-voltage protection rated to –40V on the IN pin relative to OUT. This allows the device to survive incorrect battery or supply polarity connections in automotive and industrial installations without damage. Reverse-current protection is also provided, preventing backfeed from the load into the input when VIN is removed.
What is the thermal performance of LT3092ETS8#TRPBF in the TSOT-23 package?
The LT3092ETS8#TRPBF in TSOT-23 has θJA = 57°C/W and θJC = 15°C/W. At 200mA output with 5V dropout (1W dissipation), junction temperature rise above ambient is ~57°C - requiring derating above 70°C ambient or use of copper pour on OUT pins for heat spreading. Thermal shutdown activates at TJ = 125°C with hysteresis, protecting the LT3092ETS8#TRPBF during transient overloads.
LT3092ETS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Source
- Sensing Method:
- -
- Accuracy:
- ±1%
- Voltage - Input:
- 1.2V ~ 40V
- Current - Output:
- 200mA
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LT3092ETS8#TRPBF FAQ
1.How can I place an order for LT3092ETS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3092ETS8#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT3092ETS8#TRPBF reliable?
The price and inventory of LT3092ETS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3092ETS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3092ETS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3092ETS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3092ETS8#TRPBF?
LT3092ETS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3092ETS8#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT3092ETS8#TRPBF?
For technical support, including LT3092ETS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3092ETS8#TRPBF requirements.
6.How does Aetrix verify that LT3092ETS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3092ETS8#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT3092ETS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3092ETS8#TRPBF?
All LT3092ETS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3092ETS8#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT3092ETS8#TRPBF part is unused and in its original packaging.
Return procedure for LT3092ETS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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