TL431QPK Texas Instruments Integrated Circuit (Other) In Stock
TL431QPK is a precision programmable two-terminal shunt voltage reference from Texas Instruments with an output voltage range of 2.44V to 2.55V and up to 100mA output current. It is housed in a 3-pin SOT package and is RoHS-compliant and lead-free. Available from global authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TL431QPK Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.0820(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precise programmable reference voltage between 2.44V and 2.55V enabling accurate voltage regulation in power supply feedback loops
- 100mA maximum output current capacity supporting a wide range of loads in linear and switching regulator circuits
- RoHS-compliant lead-free 3-pin SOT package simplifying assembly and meeting environmental regulations
Applications
The TL431QPK is widely used as a reference element in switching power supply feedback networks, where it sets the regulated output voltage with high precision. It is also employed in linear regulator circuits, battery chargers, and op-amp offset voltage adjustment applications requiring a stable 2.5V reference. Its compact 3-pin package and broad current handling make it a versatile building block in both consumer and industrial power management designs.
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 | 2.55V |
| Output Voltage-Min | 2.44V |
| 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 | AUTOMOTIVE |
| 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 | 2.204408% |
| 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 range of the TL431QPK?
The TL431QPK offers an adjustable output voltage range from 2.44V minimum to 2.55V maximum, with a nominal reference of approximately 2.5V. This makes it suitable for use as a precision shunt reference in power supply regulation, voltage monitoring, and feedback circuits.
How much output current can the TL431QPK sink?
The TL431QPK can sink a maximum output current of 100mA. This relatively high current capacity allows it to be used directly in shunt regulator applications and as a reference element in power supply control circuits without requiring additional buffering in many cases.
What package does the TL431QPK come in, and is it RoHS compliant?
The TL431QPK is packaged in a 3-pin SOT (Small Outline Transistor) style package, identified by JESD-30 code R-PSSO-F3. It is RoHS compliant and lead-free, meeting modern environmental regulations for electronics manufacturing. The compact package is compatible with standard surface-mount assembly.
What are typical applications for the TL431QPK?
The TL431QPK is commonly used in flyback converter feedback circuits, linear power supplies, over-voltage protection circuits, and precision voltage reference applications. Its stable 2.5V reference point and adjustable output make it a standard component in power management designs across industrial, consumer, and telecommunications equipment.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3008 | $0.30 |
| 35+ | $0.1504 | $5.26 |
| 100+ | $0.1177 | $11.77 |
| 200+ | $0.1053 | $21.06 |
| 500+ | $0.1023 | $51.15 |
| 1000+ | $0.0820 | $82.00 |
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