My Inquiry
My Account
Analog Devices Inc. LT3092EDD#PBF
- Part No.:
- LT3092EDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT3092EDD#PBF.pdf
- Description:
- IC CURRENT SOURCE 1% 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,555
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT3092EDD#PBF 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 across 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 LT3092EDD#PBF datasheet, LT3092EDD#PBF pinout, LT3092EDD#PBF application, or LT3092EDD#PBF equivalent, key selection criteria include its resistor-ratio-based programming, capacitor-free stability, Kelvin-sensed current regulation (<10ppm/V), ±1% SET pin current accuracy, and DFN-8 (3mm × 3mm) package with exposed OUT pad for thermal management.
Technical Context
The LT3092EDD#PBF 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 RSET/ROUT ratio. Its architecture eliminates need for input/output bypass capacitors by maintaining high DC/AC impedance and inherent stability across wide load and voltage conditions.
Internal protection includes reverse-battery tolerance (±40V on IN relative to OUT), reverse-current blocking, thermal shutdown with hysteresis, and current limiting up to 300mA. The device supports both floating and ground-referred configurations, with dropout voltage as low as 1.22V at 10mA load and 1.45V at 200mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Range | 0.5mA to 200mA - set precisely by resistor ratio RSET/ROUT referenced to internal 10µA source |
| Input Voltage Range | 1.2V to 40V - enables operation from low-voltage rails up to industrial bus supplies |
| Line Regulation | 0.03 nA/V typical - ensures stable current under varying input voltage without feedback compensation |
| SET Pin Current Accuracy | ±1% initial tolerance - guarantees ≤1% error in programmed current without calibration |
| Current Regulation | Better than 10ppm/V from 1.5V–40V - maintains output constancy despite supply ripple or drift |
| Dropout Voltage | 1.22V at 10mA - defines minimum headroom needed between IN and OUT for regulation |
| Reference Noise | 0.7nARMS (10Hz–100kHz) - sets fundamental limit on current-source stability in precision analog circuits |
Pinout & Package
LT3092EDD#PBF uses an 8-lead 3mm × 3mm plastic DFN package with exposed pad (Pin 9) internally connected to OUT and required to be soldered to PCB OUT net for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pins 1, 2) | Power Output Terminal | Delivers regulated current; connects to exposed pad (Pin 9); must be tied to PCB copper plane for thermal dissipation |
| IN (Pins 7, 8) | Supply Input Terminal | Provides bias and load current; requires ≥1.22V above OUT to maintain regulation at full load |
| SET (Pin 4) | Reference Current Source Terminal | Sinks precise 10µA (±1%) - voltage across RSET sets operating point for current mirror |
| NC (Pins 3, 5, 6) | No Connection | Internally unconnected; may be left floating or tied to OUT/GND without affecting function |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free operation | Stable without input/output bypass caps - eliminates ESR-related instability and simplifies layout in safety-critical loops |
| Reverse-voltage protection | Withstands ±40V on IN relative to OUT - prevents damage during battery reversal or wiring faults |
| 2-terminal floating configuration | Operates in series with signal lines without GND reference - enables true 4–20mA loop compliance and intrinsic safety |
| Kelvin-sensed current regulation | Measurement at package terminals - removes PCB trace resistance error from regulation accuracy |
| Thermal shutdown with hysteresis | Activates at TJ = 125°C and releases at ~115°C - prevents latch-up and enables self-recovery after overload |
Applications
| 4–20mA Current Loop Transmitter | Intrinsically Safe Sensor Biasing |
|---|---|
Use Scenario: Driving field transmitters in hazardous areas where energy storage must be limited to prevent ignition. IC Role / Device Role / Timing Role: 2-terminal floating current source providing loop-powered excitation and signal return path. Use Value: Eliminates need for isolation capacitors or transformers while meeting IEC 60079-11 spark-energy limits due to no internal energy storage. | Use Scenario: Powering RTDs, thermocouples, or strain gauges in explosive atmospheres (Class I Div 1). IC Role / Device Role / Timing Role: Precision current source delivering stable excitation current independent of supply variations. Use Value: ±1% SET current accuracy and <10ppm/V regulation ensure <0.1% measurement drift over 40V supply range. |
| Remote Power Supply Limiter | GND-Referred Precision Current Sink |
Use Scenario: Limiting fault current in long-distance DC distribution lines to protect downstream electronics. IC Role / Device Role / Timing Role: In-line current limiter placed between supply and load to enforce hard current ceiling. Use Value: 200mA current limit with thermal foldback prevents wire overheating and sustains operation during sustained shorts. | Use Scenario: Providing calibrated sink current for LED dimming, DAC output buffering, or photodiode transimpedance amplifiers. IC Role / Device Role / Timing Role: Ground-referenced current sink with programmable value and low offset voltage (±2mV). Use Value: 0.5mA minimum setting and 0.001%/V line regulation enable sub-100ppm accuracy in metrology-grade current references. |
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 |
|---|---|---|---|
| LM334Z/NOPB | 3-terminal device requiring external sense resistor; 10µA reference not trimmed; wider tempco (±50ppm/°C vs ±25ppm/°C) | Lacks reverse-voltage protection and thermal shutdown; limited to ≤10mA max output | Select when cost sensitivity outweighs precision, protection, and current range requirements |
| REF200AU | Two matched 100µA sources; fixed output; no programmability; higher quiescent current (1.2mA) | Not suitable for variable current or >100µA applications; no reverse-current blocking | Choose only for dual-fixed-current needs where trimming and dynamic adjustment are unnecessary |
Compared with LM334Z/NOPB and REF200AU, the LT3092EDD#PBF offers programmable 0.5–200mA output, integrated protection, capacitor-free stability, and superior initial accuracy - making it the only option qualified for AEC-Q100 automotive and intrinsically safe designs requiring >100mA capability.
Availability
LT3092EDD#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, 4–20mA loop transmitters, and intrinsic safety barrier modules requiring stable component supply with guaranteed long-term availability.
Supply support for LT3092EDD#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 precision instrumentation, industrial automation, and automotive markets.
The LT3092EDD#PBF belongs to Analog Devices' LT® precision current source product line, engineered specifically for applications demanding ultra-stable, programmable, and protected current delivery in harsh or safety-critical environments.
FAQ
What is the minimum load current required for LT3092EDD#PBF to regulate properly?
The LT3092EDD#PBF 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 LT3092EDD#PBF is designed to operate reliably only down to 0.5mA, and attempting lower values risks unstable behavior or dropout.
Can LT3092EDD#PBF be used without any external capacitors?
Yes, the LT3092EDD#PBF is explicitly designed for capacitor-free operation and remains stable without input or output bypass capacitors under typical conditions. Its high DC and AC impedance eliminates the need for external stabilization components, making it ideal for intrinsic safety applications where energy storage is prohibited. However, if long PCB traces or cables introduce inductive reactance, small series damping resistors or RC compensation networks may be required - stability must be verified in situ per the Applications Information section of the LT3092EDD#PBF datasheet.
How does the LT3092EDD#PBF achieve ±1% SET pin current accuracy?
The LT3092EDD#PBF achieves ±1% initial accuracy on its 10µA SET pin current through laser-trimmed thin-film resistors and precision bandgap circuitry fabricated in Analog Devices' proprietary bipolar process. This trimming occurs during final test at 25°C and is characterized over temperature to ensure drift remains within ±25ppm/°C. The LT3092EDD#PBF datasheet confirms this specification applies across the full –40°C to 125°C operating junction temperature range for the E-grade version, directly enabling 0.5–200mA output current programming with guaranteed tolerance.
What is the purpose of the exposed pad (Pin 9) on the LT3092EDD#PBF DFN package?
The exposed pad (Pin 9) on the LT3092EDD#PBF is internally connected to the OUT terminal and must be soldered directly to the PCB's OUT copper plane. Its primary purpose is thermal management - reducing θJA from 28°C/W to near 10°C/W when properly implemented - but it also provides low-inductance current return path and improves electrical stability. Leaving the pad unconnected or floating violates the Absolute Maximum Ratings and risks thermal runaway or regulation failure during sustained 200mA operation.
Does LT3092EDD#PBF support paralleling for higher output current?
Yes, the LT3092EDD#PBF supports paralleling to increase total output current. Two recommended methods exist: (1) tying IN and OUT pins together for simple summation, or (2) connecting SET pins together and using milliohm-level PCB trace ballast resistors (e.g., 40mΩ) between individual OUT pins to force current sharing. The LT3092EDD#PBF's tight SET pin matching (±2mV offset) enables >80% current balance at full load. Paralleling is documented in the Applications Information section and validated for up to four devices in production designs.
LT3092EDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- 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:
- 8-DFN (3x3)
LT3092EDD#PBF FAQ
1.How can I place an order for LT3092EDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3092EDD#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 LT3092EDD#PBF reliable?
The price and inventory of LT3092EDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3092EDD#PBF is usually 5 days.
3.What payment methods are accepted for LT3092EDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3092EDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3092EDD#PBF?
LT3092EDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3092EDD#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 LT3092EDD#PBF?
For technical support, including LT3092EDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3092EDD#PBF requirements.
6.How does Aetrix verify that LT3092EDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT3092EDD#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 LT3092EDD#PBF meets industry standards.
7.What is the process for return or replacement of LT3092EDD#PBF?
All LT3092EDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3092EDD#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 LT3092EDD#PBF part is unused and in its original packaging.
Return procedure for LT3092EDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT3092EDD#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…
