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Analog Devices Inc. LT3092ITS8#TRPBF
- Part No.:
- LT3092ITS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LT3092ITS8#TRPBF.pdf
- Description:
- IC CURRENT SOURCE 1% TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,093
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Product details
Overview
LT3092ITS8#TRPBF from Analog Devices is a 2-terminal programmable current source IC in an 8-lead TSOT-23 package, delivering 0.5mA–200mA output with ±1% initial SET pin current accuracy, <0.001%/V line regulation, and 1.2V–40V input voltage range. It operates without input/output capacitors and is used in intrinsic safety circuits, remote sensor biasing, and precision current limiting for industrial transmitters.
For engineers reviewing the LT3092ITS8#TRPBF datasheet, LT3092ITS8#TRPBF pinout, LT3092ITS8#TRPBF application, or LT3092ITS8#TRPBF equivalent, key selection criteria include guaranteed 200mA max output, Kelvin-sensed current regulation (<10ppm/V), reverse-voltage/reverse-current protection, thermal shutdown, and compatibility with floating or ground-referenced configurations.
Technical Context
The LT3092ITS8#TRPBF implements a precision 10µA zero-TC reference current source feeding the noninverting input of a high-gain power op-amp, enabling resistor-ratio-based current programming. Its architecture provides high DC/AC impedance and eliminates capacitor requirements for stability in intrinsically safe environments.
It features internal reverse-battery and reverse-current protection, current limiting (200mA typical), thermal shutdown with hysteresis, and dropout voltage as low as 1.22V at 10mA load. The SET pin's 1% initial accuracy and <0.001%/V line regulation ensure stable output across wide VIN and temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Range | 0.5mA to 200mA - programmable via external RSET/ROUT ratio; minimum 0.5mA required for regulation |
| Input Voltage Range | 1.2V to 40V - supports wide supply rails including 3.3V, 5V, 12V, 24V, and 36V systems |
| SET Pin Current | 10µA ±1% - precision reference current enabling accurate current setting independent of temperature |
| Line Regulation | <0.001%/V - ensures output current stability over full input voltage swing (1.2V–40V) |
| Dropout Voltage | 1.22V @ 10mA - defines minimum VIN–VOUT differential needed to sustain regulation at light loads |
| Current Regulation | <10ppm/V - specifies output current change per volt of input variation, critical for precision sensing |
| Thermal Shutdown | Active at TJ ≥ 125°C - protects device during overload; hysteresis prevents oscillation near trip point |
Pinout & Package
LT3092ITS8#TRPBF uses the 8-lead plastic TSOT-23 package (TS8), with exposed pad not present. Pins are arranged in standard top-view orientation: Pin 1 = OUT, Pin 2 = OUT, Pin 3 = IN, Pin 4 = SET, Pin 5 = NC, Pin 6 = NC, Pin 7 = IN, Pin 8 = NC. OUT pins are internally tied and must be connected together on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, Pin 2 (OUT) | Power Output Terminal | Primary current output path; both pins tied internally and externally to deliver full 200mA; connects to load return |
| Pin 3, Pin 7 (IN) | Power Input Terminal | Supplies bias and load current; must be ≥1.22V above OUT to maintain regulation at 10mA |
| Pin 4 (SET) | Reference Current Source Node | Sinks precise 10µA ±1%; voltage across RSET sets VSET, which determines IOUT via ROUT |
| Pin 5, Pin 6, Pin 8 (NC) | No Connection | Not bonded internally; may be left floating, tied to OUT, or grounded-no electrical effect |
Key Features
| Feature | Design Value |
|---|---|
| 2-Terminal Floating Operation | Enables series insertion into signal lines without ground reference-ideal for 4–20mA loop-powered sensors |
| Capacitor-Free Stability | Stable without input/output bypass caps-eliminates energy storage risks in intrinsic safety applications |
| Reverse-Voltage Protection | Withstands –40V on IN relative to OUT-prevents damage if supply polarity is inverted |
| Reverse-Current Protection | Blocks current flow from OUT to IN-essential when multiple sources share a common rail |
| Kelvin-Sensed Current Regulation | Ensures regulation accuracy is unaffected by PCB trace resistance between OUT pins and load |
Applications
| 4–20mA Current Loop Transmitter | Industrial Sensor Biasing |
|---|---|
Use Scenario: Driving analog sensors in hazardous areas where energy storage must be limited per IEC 60079-11. IC Role / Device Role / Timing Role: 2-terminal floating current source providing loop excitation and signal conditioning. Use Value: Eliminates need for input/output capacitors-reducing spark/arc risk while maintaining ±0.1% current accuracy over 1.2V–40V input range. | Use Scenario: Supplying stable bias current to RTDs, strain gauges, or MEMS pressure sensors in PLC modules. IC Role / Device Role / Timing Role: Precision GND-referred current source for ratiometric measurement front-ends. Use Value: 10µA SET pin current with <0.001%/V line regulation ensures sensor excitation remains stable despite supply ripple or drift. |
| Intrinsic Safety Barrier | Programmable Current Limiter |
Use Scenario: Limiting fault current in explosion-proof field instruments certified to ATEX/IECEx standards. IC Role / Device Role / Timing Role: Intrinsically safe current limiter placed in series with signal/power lines. Use Value: Reverse-voltage and reverse-current protection plus thermal shutdown guarantee safe failure modes under short-circuit or overvoltage conditions. | Use Scenario: Protecting local LDO outputs or microcontroller I/O pins from overcurrent in embedded control systems. IC Role / Device Role / Timing Role: Adjustable current sink limiting output current to 10mA–100mA based on RSET/ROUT ratio. Use Value: Programmable 0.5mA–200mA range enables one BOM item to cover multiple current-limit thresholds without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-terminal current source applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3094IMS8E#TRPBF | Higher PSRR (≥90dB), lower noise (0.4µVRMS), integrated soft-start; 12-lead MSOP package | Targeted at ultra-low-noise precision instrumentation, not intrinsically safe barrier use | Choose when noise performance and PSRR outweigh capacitor-free operation and TSOT-23 footprint constraints |
| REF200AU | Fixed 100µA dual current source; no programmability; SO-8 package; no reverse protection | Limited to low-current biasing (≤100µA); unsuitable for 200mA loads or harsh supply environments | Choose only for simple, low-power, fixed-current bias where programmability and protection are unnecessary |
Compared with LT3092ITS8#TRPBF, LT3094IMS8E#TRPBF offers superior noise and PSRR but requires more board space and lacks intrinsic safety certification support, while REF200AU provides fixed low-current sourcing without regulation flexibility or protection features.
Availability
LT3092ITS8#TRPBF is available at Aetrix Electronics and suitable for industrial sensor biasing, 4–20mA transmitter design, and intrinsic safety barrier implementation requiring stable component supply, long-term lifecycle continuity, and automotive-grade reliability (AEC-Q100 qualified).
Supply support for LT3092ITS8#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 LT3092ITS8#TRPBF belongs to the LT® precision current source product line, designed specifically for applications demanding programmable, capacitor-free, intrinsically safe current regulation in harsh or safety-critical environments.
FAQ
What is the minimum load current required for LT3092ITS8#TRPBF to regulate properly?
The LT3092ITS8#TRPBF requires a minimum load current of 0.5mA to maintain regulation. Below this threshold, the device enters dropout and cannot sustain programmed output current. This value is specified in the Electrical Characteristics table and confirmed across the full –40°C to 125°C operating temperature range for the I-grade version.
Does LT3092ITS8#TRPBF require input or output capacitors for stability?
No, LT3092ITS8#TRPBF is inherently stable without input or output capacitors due to its high DC/AC output impedance architecture. This feature is explicitly validated in the datasheet and enables safe use in intrinsic safety applications where energy storage is prohibited. Capacitors may be added only for noise reduction or frequency compensation in specific layouts.
How is output current programmed on LT3092ITS8#TRPBF?
Output current on LT3092ITS8#TRPBF is set using two external resistors: RSET connected between SET and OUT establishes VSET = 10µA × RSET, and ROUT connected between OUT and load completes the path so that IOUT = VSET/ROUT + 10µA. The 10µA SET pin current is trimmed to ±1% initial accuracy and has low temperature coefficient.
What protection features does LT3092ITS8#TRPBF include?
LT3092ITS8#TRPBF integrates reverse-voltage protection (±40V on IN relative to OUT), reverse-current protection, current limiting (200mA typical), and thermal shutdown with hysteresis. These protections are active across the full operating temperature range and do not require external components-critical for robust operation in industrial and automotive environments.
Can LT3092ITS8#TRPBF be used in floating (non-ground-referenced) configurations?
Yes, LT3092ITS8#TRPBF is explicitly designed for 2-terminal floating current source operation. It can be inserted directly into signal lines-such as 4–20mA loops-without requiring a ground reference. The datasheet confirms this capability in both the description and Typical Application schematic, and it is enabled by the Kelvin-sensed OUT configuration and internal architecture.
LT3092ITS8#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
LT3092ITS8#TRPBF FAQ
1.How can I place an order for LT3092ITS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3092ITS8#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 LT3092ITS8#TRPBF reliable?
The price and inventory of LT3092ITS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3092ITS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3092ITS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3092ITS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3092ITS8#TRPBF?
LT3092ITS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3092ITS8#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 LT3092ITS8#TRPBF?
For technical support, including LT3092ITS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3092ITS8#TRPBF requirements.
6.How does Aetrix verify that LT3092ITS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3092ITS8#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 LT3092ITS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3092ITS8#TRPBF?
All LT3092ITS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3092ITS8#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 LT3092ITS8#TRPBF part is unused and in its original packaging.
Return procedure for LT3092ITS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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