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Technical Specifications
Parameters and characteristics for this part
| Specification | TL431QDBZT |
|---|---|
| Current - Cathode [custom] | 1 mA |
| Current - Output | 100 mA |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | Adjustable |
| Package / Case | SOT-23-3, TO-236-3, SC-59 |
| Reference Type | Shunt |
| Supplier Device Package | SOT-23-3 |
| Tolerance | 2.2 % |
| Voltage - Output (Max) [Max] | 36 V |
| Voltage - Output (Min/Fixed) [Min] | 2.495 V |
TL431LI-Q1 Series
Adjustable precision shunt regulator with optimized reference current (pin layout: KRA)
| Part | Reference Type | Current - Cathode | Current - Output | Voltage - Output (Min/Fixed) [Min] | Package / Case | Output Type | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Output (Max) [Max] | Supplier Device Package | Mounting Type | Current - Cathode [custom] | Grade | Qualification | Tolerance | Package / Case [custom] | Package / Case [custom] | Package / Case [y] | Package / Case [x] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | Shunt | 700 µA | 100 mA | 2.495 V | TO-226-3 TO-92-3 | Adjustable | 85 °C | -40 °C | 36 V | TO-92-3 | Through Hole | ||||||||
Texas Instruments | Shunt | 700 µA | 100 mA | 2.495 V | SC-59 SOT-23-3 TO-236-3 | Adjustable | 85 °C | -40 °C | 36 V | SOT-23-3 | Surface Mount | ||||||||
 Texas Instruments | Shunt | 15 mA | 2.495 V | SC-59 SOT-23-3 TO-236-3 | Adjustable | 125 °C | -40 °C | 36 V | SOT-23-3 | Surface Mount | 600 µA | Automotive | AEC-Q100 | ||||||
 Texas Instruments | Shunt | 100 mA | 2.495 V | 6-TSSOP SC-88 SOT-363 | Adjustable | 125 °C | -40 °C | 36 V | SC-70-6 | Surface Mount | 1 mA | 2.2 % | |||||||
 Texas Instruments | Shunt | 700 µA | 100 mA | 2.495 V | SC-74A SOT-753 | Adjustable | 85 °C | -40 °C | 36 V | SOT-23-5 | Surface Mount | ||||||||
 Texas Instruments | Shunt | 100 mA | 2.495 V | 8-TSSOP | Adjustable | 70 °C | 0 °C | 36 V | 8-TSSOP | Surface Mount | 1 mA | 2.2 % | 0.173 " | 4.4 mm | |||||
 Texas Instruments | Shunt | 100 mA | 2.495 V | 8-SOIC | Adjustable | 85 °C | -40 °C | 36 V | 8-SOIC | Surface Mount | 1 mA | 2.2 % | 3.9 mm | 0.154 in | |||||
Texas Instruments | Shunt | 100 mA | 2.495 V | TO-226-3 TO-92-3 | Adjustable | 70 °C | 0 °C | 36 V | TO-92-3 | Through Hole | 600 µA | ||||||||
Texas Instruments | Shunt | 700 µA | 100 mA | 2.495 V | 8-SOIC | Adjustable | 85 °C | -40 °C | 36 V | 8-SOIC | Surface Mount | 1 % | 3.9 mm | 0.154 in | |||||
Texas Instruments | Shunt | 100 mA | 2.495 V | SC-59 SOT-23-3 TO-236-3 | Adjustable | 125 °C | -40 °C | 36 V | SOT-23-3 | Surface Mount | 1 mA | 2.2 % |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 0.83 | |
| 10 | $ 0.74 | |||
| 25 | $ 0.71 | |||
| 100 | $ 0.58 | |||
| Digi-Reel® | 1 | $ 0.83 | ||
| 10 | $ 0.74 | |||
| 25 | $ 0.71 | |||
| 100 | $ 0.58 | |||
| Tape & Reel (TR) | 250 | $ 0.54 | ||
| 500 | $ 0.48 | |||
| 1250 | $ 0.38 | |||
| 2500 | $ 0.35 | |||
| 6250 | $ 0.34 | |||
| 12500 | $ 0.32 | |||
| 25000 | $ 0.31 | |||
Description
General part information
TL431LI-Q1 Series
The TL431LI-Q1 is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref(approximately 2.495 V) and 36 V with two external resistors. The device has a typical output impedance of 0.3 Ω. Its active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the industry standard TL431-Q1 with optimized Irefand IIdevperformance. The lower Irefand IIdevvalues of the TL431LI-Q1 enable designers to achieve higher system accuracy and lower leakage current. The TL432LI-Q1 has exactly the same functionality and electrical specifications as the TL431LI-Q1, but has a different pinout for the DBZ package.
The TL431LI-Q1 is offered in two grades, with initial tolerances (at 25°C) of 0.5% and 1%, for the B and A grade, respectively. The TL431LI-Q1 is also available in two temperature grades: grade 1 (denoted by a ’Q’ in the part number), and grade 0 (denoted by a ’E’ in the part number), which represent maximum ambient operating temperatures of 125°C and 150°C respectively. The TL43xLI-Q1 is characterized for operation from –40°C to 125°C for grade 1, and –40°C to 150°C for grade 0, and its low output drift versus temperature ensures good stability over the entire temperature range.
The TL431LI-Q1 is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref(approximately 2.495 V) and 36 V with two external resistors. The device has a typical output impedance of 0.3 Ω. Its active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the industry standard TL431-Q1 with optimized Irefand IIdevperformance. The lower Irefand IIdevvalues of the TL431LI-Q1 enable designers to achieve higher system accuracy and lower leakage current. The TL432LI-Q1 has exactly the same functionality and electrical specifications as the TL431LI-Q1, but has a different pinout for the DBZ package.
Documents
Technical documentation and resources