Texas Instruments TL431BQDBZR Adjustable Precision Shunt Regulator
Voltage Reference · Texas Instruments
±0.5% Initial Voltage Accuracy (B-grade) – Superior precision for critical applications. Wide Adjustable Range (2.495V to 36V) – Flexible for diverse circuit requirements. 100mA Shunt Current Capacity – Strong handling for medium-power regulation. 92 PPM/°C Low Temp Drift – Ensures stability across industrial & automotive conditions.
- Attribute
- Value / Specification
- Base Product Number
- TL431
- Brand
- Texas Instruments
- Current - Cathode
- 700 µA
- Current - Output
- 100 mA
- Description/Function
- Adjustable Precision Shunt Regulator
- Professional sourcingVetted supply chain with documented traceability
- Genuine partsDocumented traceability on every shipment
- ESD-safe handlingOriginal packaging, moisture controlled
- Worldwide shippingConsolidated freight to 100+ countries
Specifications
Core ratings and package details for this voltage reference (TL431BQDBZR). Use the table below when comparing drop-in options or validating a schematic callout.
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Attribute | Value / Specification | Height | 1 mm |
| Base Product Number | TL431 | Initial Accuracy | 0.5 % |
| Brand | Texas Instruments | Length | 2.92 mm |
| Current - Cathode | 700 µA | Maximum Output Voltage | 36 V |
| Current - Output | 100 mA | Minimum Operating Temp | -40°C |
| Description/Function | Adjustable Precision Shunt Regulator | Maximum Operating Temp | +125°C |
Product Overview
Application context for TL431BQDBZR (Texas Instruments · Voltage Reference) — what the part is for, how it is typically used, and the design points buyers ask about first.
- ±0.5% Initial Voltage Accuracy (B-grade) – Superior precision for critical applications.
- Wide Adjustable Range (2.495V to 36V) – Flexible for diverse circuit requirements.
- 100mA Shunt Current Capacity – Strong handling for medium-power regulation.
- 92 PPM/°C Low Temp Drift – Ensures stability across industrial & automotive conditions.
Key Applications
- Switching & Linear Power Supply Regulation
- Voltage Monitoring & Precision References
- Battery Management Systems
- Optocoupler Feedback Circuits
- Error Amplifiers & Control Loops
Product Attributes
| Attribute | Value / Specification |
|---|---|
| Base Product Number | TL431 |
| Brand | Texas Instruments |
| Current - Cathode | 700 µA |
| Current - Output | 100 mA |
| Description/Function | Adjustable Precision Shunt Regulator |
| Height | 1 mm |
| Initial Accuracy | 0.5 % |
| Length | 2.92 mm |
| Maximum Output Voltage | 36 V |
| Minimum Operating Temp | -40°C |
| Maximum Operating Temp | +125°C |
| Mounting Style | SMD/SMT |
| Output Type | Adjustable |
| Output Voltage (Min) | 2.495V (Vref) |
| Package / Case | SOT-23-3 (TO-236-3) |
| Product Category | Voltage References |
| Reference Type | Shunt |
| Series | TL431 |
| Shunt Current (Min) | 600 µA |
| Subcategory | PMIC - Power Management ICs |
| Temperature Coefficient | 92 PPM/°C (typical) |
| Tolerance | ±0.5% (B-grade) |
| Topology | Shunt References |
| Voltage - Output (Max) | 36 V |
Frequently Asked Questions (FAQ)
1. What makes the Texas Instruments TL431BQDBZR Adjustable Precision Shunt Regulator superior to traditional Zener diodes?
The TL431BQDBZR offers higher accuracy (±0.5% tolerance at 25°C), better temperature stability, and a sharper turn-on characteristic compared to Zener diodes. It also provides adjustable output voltage (2.495V to 36V) with low impedance (0.2Ω), making it far more flexible in regulation applications.2. How does the Texas Instruments TL431BQDBZR achieve stable voltage regulation in harsh environments?
With an operating range of -40°C to +125°C and built-in thermal compensation, the TL431BQDBZR maintains low output drift (typical 92 PPM/°C), ensuring reliable performance in industrial, automotive, and high-temperature applications.3. What are the key differences between the TL431BQDBZR and standard-grade shunt regulators?
The TL431BQDBZR is a B-grade device, meaning it delivers ±0.5% initial voltage tolerance, as opposed to the ±1% (A-grade) or ±2% (standard-grade) versions. It also supports extended temperature ranges up to 125°C.4. Can the Texas Instruments TL431BQDBZR be used as a voltage reference in switching power supplies?
Yes, its fast response time and low output noise (0.2Ω impedance) make it an excellent choice for feedback control in switching power supplies, especially in optocoupler-based isolated circuits.5. What is the minimum operating current requirement for the TL431BQDBZR?
The TL431BQDBZR requires a minimum shunt current of 600 µA for stable operation, ensuring efficient use in low-power circuits without excessive power loss.Design Resources
Tutorial and application reading tied to TL431BQDBZR. These are editorial guides on this site, not manufacturer PDFs.
Frequently Asked Questions
4 practical questions buyers ask about TL431BQDBZR — availability, specs, and how to request a quote.
What is TL431BQDBZR?
±0.5% Initial Voltage Accuracy (B-grade) – Superior precision for critical applications. Wide Adjustable Range (2.495V to 36V) – Flexible for diverse circuit requirements. 100mA Shunt Current Capacity – Strong handling for medium-power regulation. 92 PPM/°C Low Temp Drift – Ensures stability across industrial & automotive conditions.
What type of component is TL431BQDBZR?
TL431BQDBZR is a Voltage Reference from Texas Instruments.
What are the key specifications of TL431BQDBZR?
Attribute: Value / Specification; Base Product Number: TL431; Brand: Texas Instruments; Current - Cathode: 700 µA; Current - Output: 100 mA.
Is TL431BQDBZR in stock at MOZ Electronics?
TL431BQDBZR is listed as in stock. Order online when a price is shown, or submit an RFQ for volume pricing and lead time.
Sourcing desk
Need volume pricing, a specific date code, or an alternative part?
Send us the quantity and target date — a sourcing specialist replies within one business day.