LM431BIM3/NOPBIn StockTexas Instruments
LM431BIM3/NOPB is a 2%/1%/0.5% accuracy adjustable precision Zener shunt voltage regulator from Texas Instruments. Output voltage adjustable from 2.5V to 36V with 100mA sink current capability. From $0.42 in stock, SOT-23 package, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- LM431BIM3/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4200(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
- Adjustable output voltage from 2.5V to 36V with precision tolerances of 0.5%, 1%, or 2%
- 100mA maximum sink current for versatile power management applications
- Ultra-compact SOT-23 3-pin package ideal for space-constrained designs
- Low output impedance with sharp turn-on characteristics for stable regulation
- Wide temperature range operation suitable for industrial environments
Applications
The LM431BIM3/NOPB is widely used in power supply feedback and voltage reference circuits, providing precise voltage regulation in switching and linear power supplies. It is commonly deployed in battery management systems, op-amp bias networks, and LED driver circuits where stable reference voltages are critical. Its small SOT-23 footprint makes it ideal for portable consumer electronics, industrial control systems, and automotive accessory designs.
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 | 2.52V |
| Output Voltage-Min | 2.47V |
| 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 |
| Supply Voltage-Max (Vsup) | 37V |
| Supply Voltage-Min (Vsup) | 2.44V |
| 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 LM431BIM3/NOPB:
Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, BIPolar, PDSO3
Voltage Reference, 1 Output, 2.495V, Trim/Adjustable, BIPolar, PDSO3
Frequently Asked Questions
What is the output voltage range of the LM431BIM3/NOPB?
The LM431BIM3/NOPB supports an adjustable output voltage range from 2.5V to 36V. The reference voltage at the REF pin is typically 2.495V, and the output can be set to any value within this range using an external resistor divider network.
What are the typical applications for the LM431BIM3/NOPB?
The LM431BIM3/NOPB is commonly used in switching power supply feedback loops, precision voltage reference circuits, battery charger controllers, LED current regulators, and analog signal conditioning. Its accuracy options (0.5%, 1%, 2%) make it suitable for both cost-sensitive and precision-critical designs.
What package does the LM431BIM3/NOPB come in and what does the suffix mean?
The LM431BIM3/NOPB comes in a SOT-23 3-pin surface mount package. The 'B' suffix denotes the 1% initial accuracy grade, 'IM3' refers to the SOT-23 package, and '/NOPB' indicates lead-free (Pb-free) RoHS-compliant construction per JESD-609 e3 standards.
What is the maximum sink current of the LM431BIM3/NOPB?
The LM431BIM3/NOPB can sink up to 100mA of output current, making it suitable for a wide variety of load conditions in voltage reference and regulation applications without requiring additional current boosting components in many typical circuits.
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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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