TL431BCPK Texas Instruments Integrated Circuit (Other) In Stock
The TL431BCPK is a precision programmable shunt voltage reference IC by Texas Instruments in a 3-pin SOT-23 package, with a tightly regulated output voltage of 2.483V to 2.507V and up to 100 mA output current. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TL431BCPK Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precision 2.495V reference voltage (±0.5% tolerance, 2.483V–2.507V) ensures highly accurate voltage regulation in power supply and feedback circuits
- 100 mA maximum output current capability enables direct use as a shunt regulator in low-power designs without additional pass transistors
- Compact 3-pin SOT-23 (PSSO-F3) package with RoHS e3 compliance and 15-year EOL guarantee for long-lifecycle power management designs
Applications
The TL431BCPK is widely used as a precision voltage reference and shunt regulator in switch-mode power supplies, linear regulators, and battery chargers requiring stable 2.5V feedback references. Its tight output voltage tolerance makes it suitable for error amplifier circuits in isolated flyback converters and offline power adapters using optocoupler feedback. It is also applied in precision analog signal conditioning, ADC reference circuits, and threshold detection in industrial and consumer electronics.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PSSO-F3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 2.507V |
| Output Voltage-Min | 2.483V |
| Output Voltage-Nom | 2.495V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-243 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 92ppm/°C |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | FLAT |
| Terminal Pitch | 1.5mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | YES |
| Voltage Tolerance-Max | 0.5% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage of the TL431BCPK?
The TL431BCPK provides a precision output voltage range of 2.483V to 2.507V, with a nominal value of approximately 2.495V. This tight tolerance makes it suitable for precision voltage reference and regulation applications in power supplies and analog signal circuits.
What is the maximum output current of the TL431BCPK?
The TL431BCPK supports a maximum output current of 100 mA, allowing it to function as a shunt voltage regulator in low-power designs. For higher current applications, it is typically used to drive the base of an external NPN transistor to increase current handling capability.
What package does the TL431BCPK use?
The TL431BCPK is housed in a 3-pin SOT-23 surface-mount package (JESD-30 code R-PSSO-F3), which is an ultra-compact footprint ideal for space-constrained power supply designs, portable electronics, and high-density PCB layouts in consumer and industrial products.
What are typical applications for the TL431BCPK?
The TL431BCPK is used as a shunt voltage reference in switch-mode power supply feedback loops, optocoupler-based isolated converters, linear voltage regulators, battery charger circuits, ADC reference sources, and precision comparator threshold setting in both consumer and industrial electronics designs.
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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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