High-precision adjustable shunt voltage reference featuring ±0.5% accuracy, 2.495–36V adjustable output, low dynamic impedance, and excellent thermal stability—ideal for regulation and feedback in SMPS, chargers, UPS, and industrial power control.
Product Overview
The TL431ACDBVR from Texas Instruments is a three-terminal adjustable precision shunt reference with a 2.495V Vref. Using an external divider, the output can be set from 2.495V up to 36V. It offers low dynamic impedance (typ. 0.2Ω), a wide 1–100mA operating current range, and an industrial temperature rating of –40°C to +125°C. The compact SOT-23 (DBV) package enables easy integration in high-density designs for secondary regulation, threshold detection, precision referencing, and closed-loop feedback. RoHS/REACH compliant; MSL Level-1 @ 260°C.
Key Features
Applications
Key Specifications
| Parameter | Specification |
| Brand | Texas Instruments (TI) |
| Part Number | TL431ACDBVR |
| Function | Adjustable Shunt Voltage Reference |
| Reference Voltage (Vref) | 2.495 V (typical) |
| Output Voltage Range (VOUT) | Adjustable from 2.495 V to 36 V |
| Reference Accuracy | ±0.5 % (A grade @ 25 °C); ±1 % and ±2 % options available |
| Dynamic Impedance (Zdyn) | 0.2 Ω typical |
| Operating Current (IOP) | 1 mA – 100 mA |
| Operating Temperature Range (TJ) | –40 °C to +125 °C (Industrial grade) |
| Typical Temperature Drift | 6 mV (C grade); 14 mV (Q grade) |
| Package Type | SOT-23 (DBV) — 3-pin |
| Compliance / Standards | RoHS & REACH Compliant |
| Moisture Sensitivity Level (MSL) | Level 1 @ 260 °C (Unlimited) |
RFQ & Support
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