My Inquiry
My Account
Analog Devices Inc. LT3092MPST#PBF
- Part No.:
- LT3092MPST#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
LT3092MPST#PBF.pdf
- Description:
- IC CURRENT SOURCE 1% SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,069
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT3092MPST#PBF from Analog Devices is a 2-terminal programmable current source IC with ±1% initial SET pin current accuracy, 1.2V to 40V input voltage range, and 200mA maximum output current. It operates without input/output capacitors and delivers stable current in intrinsic safety circuits, remote sensor biasing, and precision current limiting for industrial signal conditioning systems.
For engineers reviewing the LT3092MPST#PBF datasheet, LT3092MPST#PBF pinout, LT3092MPST#PBF application, or LT3092MPST#PBF equivalent, key selection criteria include its 10µA precision reference current, <0.001%/V line regulation, –55°C to 125°C operating junction temperature, reverse-voltage/reverse-current protection, and SOT-223 package compatibility with high-reliability embedded power rails.
Technical Context
The LT3092MPST#PBF implements a Kelvin-sensed, low-drift 10µA reference current source feeding the noninverting input of a high-gain power op-amp. Its architecture enables true 2-terminal operation by sourcing all bias and load current from the IN pin while regulating via the SET–OUT differential voltage.
It achieves <10ppm/V current regulation over 1.5V–40V input-to-output differential and maintains stability without external capacitors due to inherent high DC/AC output impedance. Internal thermal shutdown and current limiting activate at 125°C junction temperature and 200mA load, respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Range | 0.5mA to 200mA set by resistor ratio; minimum 0.5mA required for regulation |
| SET Pin Current | 10µA ±1% initial accuracy; defines output current scaling factor (IOUT = 10µA × RSET/ROUT + 10µA) |
| Input Voltage Range | 1.2V to 40V relative to OUT; supports wide-supply industrial and automotive rails |
| Line Regulation | 0.03nA/V typical; ensures <0.001%/V output current drift across full input range |
| Dropout Voltage | 1.22V at 10mA, 1.45V at 200mA; determines minimum headroom needed for regulation |
| Junction Temp Range | –55°C to 125°C (MP grade); qualified for extended-temperature military and downhole applications |
| RMS Output Noise | 0.7nARMS (10Hz–100kHz); low-noise performance critical for precision sensor excitation |
Pinout & Package
LT3092MPST#PBF uses the 3-lead plastic SOT-223 package. The exposed tab is electrically connected to OUT and must be soldered directly to the PCB's OUT copper pour for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 3) | Power Input | Supplies internal bias and load current; must be 1.2V–1.45V above OUT to maintain regulation |
| OUT (Pin 2) | Current Output | Delivers regulated output current; connects to exposed tab for thermal conduction and low-impedance return path |
| SET (Pin 1) | Reference Input | Noninverting input of error amplifier; sinks fixed 10µA reference current to program IOUT via RSET |
Key Features
| Feature | Design Value |
|---|---|
| 2-Terminal Operation | Eliminates need for ground-referenced supply; enables floating current sources in signal lines or isolated loops |
| No External Capacitors Required | Stable operation without input/output bypass caps reduces BOM count and avoids capacitor-related reliability risks in intrinsically safe designs |
| Reverse-Voltage Protection | Withstands –40V on IN relative to OUT; prevents damage during battery reversal or supply sequencing faults |
| Reverse-Current Protection | Blocks current flow from OUT to IN when VOUT > VIN; essential for bidirectional signal line applications |
| Thermal Shutdown with Hysteresis | Activates at 125°C junction temperature and releases at ~115°C; prevents thermal runaway during sustained overload |
Applications
| 4–20mA Loop Transmitter | Remote RTD Sensor Bias |
|---|---|
Use Scenario: Providing precise, loop-powered current output for industrial process transmitters interfacing with PLC analog inputs. IC Role / Device Role / Timing Role: Acts as the primary 2-terminal current source setting loop current proportional to sensor signal; replaces discrete transistor-based designs. Use Value: Enables single-supply, capacitor-free operation with <10ppm/V line regulation-critical for maintaining 0.1% accuracy across 12–40V loop supply variations. | Use Scenario: Exciting platinum RTD elements in hazardous-area temperature sensors where energy storage must be minimized. IC Role / Device Role / Timing Role: Functions as an intrinsically safe, floating current source delivering stable bias current independent of RTD lead resistance. Use Value: Eliminates need for input/output capacitors that could store hazardous energy-compliant with IEC 60079-11 requirements for field devices. |
| Precision Current Limiter | High-Temp Downhole Electronics |
Use Scenario: Protecting sensitive analog front-ends in test equipment from overcurrent events during probe contact faults. IC Role / Device Role / Timing Role: Serves as a programmable, self-contained current limiter placed in series with supply rail to downstream circuitry. Use Value: Provides fast-acting, temperature-stable current limiting (200mA threshold) without external sense resistors or op-amps-reducing board space and calibration complexity. | Use Scenario: Biasing MEMS accelerometers and pressure transducers in oil/gas well logging tools operating at –55°C to 125°C. IC Role / Device Role / Timing Role: Delivers stable excitation current in extreme-temperature environments where standard regulators fail. Use Value: MP-grade qualification guarantees full-spec operation at –55°C, enabling reliable sensor excitation where conventional current sources exhibit >5% drift. |
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 |
|---|---|---|---|
| LT3092EST#PBF | Same die, –40°C to 125°C temp grade; 100% tested at TA = 25°C, performance at extremes assured by correlation | Standard industrial grade; lacks MP-grade extended low-temp validation | Select when operating ambient stays ≥ –40°C and cost sensitivity outweighs need for –55°C guarantee |
| LM334Z/NOPB | 3-terminal device requiring separate reference; 10µA nominal SET current but ±3% initial tolerance; no reverse-protection circuitry | Requires external components for reverse protection and tighter accuracy; not suitable for intrinsic safety | Choose only for non-critical, cost-driven applications where layout space allows extra components and safety certification isn't required |
Compared with LT3092MPST#PBF, LT3092EST#PBF offers identical functionality at lower cost but lacks guaranteed –55°C operation, while LM334Z/NOPB requires additional protection circuitry and delivers lower accuracy-making LT3092MPST#PBF the sole choice for ruggedized, capacitor-free, intrinsically safe current sourcing.
Availability
LT3092MPST#PBF is available at Aetrix Electronics and suitable for industrial process control, downhole instrumentation, intrinsic safety barriers, and high-reliability sensor biasing requiring stable component supply across extended temperature ranges.
Supply support for LT3092MPST#PBF 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 LT3092MPST#PBF belongs to the LT® Precision Current Sources product line, engineered specifically for applications demanding ultra-stable, capacitor-free, 2-terminal current regulation in harsh environments.
FAQ
What is the minimum load current required for LT3092MPST#PBF to maintain regulation?
The LT3092MPST#PBF requires a minimum load current of 0.5mA to maintain regulation. Below this threshold, the device cannot sustain closed-loop control, resulting in unregulated output. This value is specified in the Electrical Characteristics table under "Minimum Load Current" and is consistent across the –55°C to 125°C operating junction temperature range for the MP grade. Designers must ensure the total load-including any leakage paths-meets or exceeds 500µA at all operating conditions.
Does LT3092MPST#PBF require input or output capacitors for stability?
No, the LT3092MPST#PBF is designed to operate stably without input or output capacitors in most configurations. Its high DC and AC output impedance eliminates the need for external stabilization components, making it ideal for intrinsic safety applications where energy storage is restricted. However, if long PCB traces or cables introduce inductive reactance, series damping resistors or RC compensation networks may be necessary-details are provided in the Applications Information section of the LT3092MPST#PBF datasheet.
How does the SET pin function in LT3092MPST#PBF?
The SET pin of the LT3092MPST#PBF is the noninverting input of the internal error amplifier and sources a precision 10µA current. This current flows through an external resistor (RSET) to generate a reference voltage, which-combined with the ROUT resistor-determines output current per the formula IOUT = 10µA × RSET/ROUT + 10µA. The SET pin's 1% initial accuracy and low temperature coefficient directly define the LT3092MPST#PBF's overall current-setting precision.
What protection features are integrated into LT3092MPST#PBF?
The LT3092MPST#PBF integrates reverse-voltage protection (±40V on IN relative to OUT), reverse-current protection (blocks OUT-to-IN conduction), current limiting (200mA threshold), and thermal shutdown with hysteresis (trips at 125°C, resets near 115°C). These protections operate autonomously without external components, ensuring robust operation in fault-prone industrial and automotive environments where supply reversals, short circuits, or overheating may occur.
Can LT3092MPST#PBF be used in AEC-Q100 automotive applications?
No, the LT3092MPST#PBF is not AEC-Q100 qualified. While the LT3092 family includes AEC-Q100–qualified variants (e.g., LT3092EST#WPBF), the MP-grade LT3092MPST#PBF is specified for –55°C to 125°C operation and intended for military, aerospace, and industrial applications requiring extended temperature validation-not automotive qualification. For automotive use, select the W-suffix automotive-grade parts explicitly listed in the Order Information table.
LT3092MPST#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Current Source
- Sensing Method:
- -
- Accuracy:
- ±1%
- Voltage - Input:
- 1.2V ~ 40V
- Current - Output:
- 200mA
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
LT3092MPST#PBF FAQ
1.How can I place an order for LT3092MPST#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3092MPST#PBF 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 LT3092MPST#PBF reliable?
The price and inventory of LT3092MPST#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3092MPST#PBF is usually 5 days.
3.What payment methods are accepted for LT3092MPST#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3092MPST#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3092MPST#PBF?
LT3092MPST#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3092MPST#PBF 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 LT3092MPST#PBF?
For technical support, including LT3092MPST#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3092MPST#PBF requirements.
6.How does Aetrix verify that LT3092MPST#PBF is sourced from the original manufacturer or authorized distributors?
All LT3092MPST#PBF 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 LT3092MPST#PBF meets industry standards.
7.What is the process for return or replacement of LT3092MPST#PBF?
All LT3092MPST#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3092MPST#PBF, 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 LT3092MPST#PBF part is unused and in its original packaging.
Return procedure for LT3092MPST#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT3092MPST#PBF Tags
.jpg)
-
PSSI2021SAY,115
Nexperia USA Inc.
-
BCR401RE6327HTSA1
Infineon Technologies
-
INA199B2DCKR
Texas Instruments
-
INA199A1DCKR
Texas Instruments
-
INA199B1DCKR
Texas Instruments
-
NSI45015WT1G
onsemi
-
NSI45020T1G
onsemi
-
NSI45030AT1G
onsemi
-
NSI45025AT1G
onsemi
-
NSI45020AT1G
onsemi
-
NSI50010YT1G
onsemi
-
LM334Z/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
