LM431CIM3/NOPBIn StockTexas Instruments
LM431CIM3/NOPB is a precision programmable shunt voltage reference from Texas Instruments, offering 2.5V to 36V output range with 0.5% initial accuracy in compact SOT-23-3 package. From $0.22 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- LM431CIM3/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2184(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precision shunt voltage reference with 2.5V to 36V adjustable output range
- High accuracy with 0.5% initial voltage tolerance over full temperature range
- Compact SOT-23-3 (3-pin) package ideal for space-constrained designs
- Low output impedance supporting up to 100mA output current
- RoHS compliant (Pb-free) with extended industrial temperature range
Applications
The LM431CIM3/NOPB is widely used in power supply feedback regulation and precision voltage reference circuits. It serves as a key component in switching power supplies, battery chargers, and voltage monitoring applications. Its compact SOT-23 footprint makes it ideal for portable devices, industrial control systems, and telecom equipment requiring stable reference voltages.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 2.51V |
| Output Voltage-Min | 2.485V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 97ppm/°C |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | YES |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM431CIM3/NOPB:
Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, BIPolar, PDSO3
Two Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, BIPolar, PDSO3
Frequently Asked Questions
What is the output voltage range of the LM431CIM3/NOPB?
The LM431CIM3/NOPB supports an adjustable output voltage range from 2.485V (minimum) to 36V (maximum), with a nominal reference voltage of 2.5V. This wide range is achieved through an external resistor divider network connected to the reference (REF) pin.
What is the maximum output current the LM431CIM3/NOPB can sink?
The LM431CIM3/NOPB can sink a maximum output current of 100mA (0.1A). This makes it suitable for applications requiring moderate load regulation, such as feedback control in switching power supplies and linear regulators.
What package does the LM431CIM3/NOPB come in and what are its temperature ratings?
The LM431CIM3/NOPB is housed in a SOT-23-3 (3-pin small outline transistor) package, which is ideal for space-constrained PCB designs. The 'C' grade designation indicates it is rated for commercial/industrial temperature range operation, ensuring reliable performance across typical industrial environments.
What are common applications for the LM431CIM3/NOPB?
The LM431CIM3/NOPB is commonly used in switching power supply feedback loops, precision voltage references, over-voltage protection circuits, battery chargers, and voltage monitoring systems. Its adjustable output and stable reference make it a versatile component in analog circuit design.
Is the LM431CIM3/NOPB RoHS compliant?
Yes, the LM431CIM3/NOPB is fully RoHS compliant. The '/NOPB' suffix in the part number indicates it is a lead-free (Pb-free) device, conforming to environmental regulations for hazardous substances. The JESD-609 code e3 also confirms its Pb-free and halide-free status.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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