Overview
The TL431IDBZR is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its adjustable precision and thermal stability across various temperature ranges. The TL431IDBZR allows for an output voltage range between 2.495 V and 36 V, which can be set using two external resistors. It is characterized for operation from -40°C to 85°C, making it suitable for a wide range of applications, including automotive, commercial, and industrial environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (Vref) | 2.495 | V |
| Reference Voltage Tolerance | ±2% | % |
| Output Voltage Range | Vref to 36 V | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | SOT23 | - |
| Package Size | 2.9 x 1.3 x 1 | mm |
| Cathode Current Range | 1 mA to 100 mA | mA |
| Typical Output Impedance | 0.2 Ω | Ω |
Key Features
- Adjustable output voltage from Vref (approximately 2.5 V) to 36 V using two external resistors.
- Three grades of reference voltage tolerance: 0.5%, 1%, and 2% (B, A, and standard grade respectively).
- Operation from -40°C to 85°C, with some variants extending to -40°C to 125°C.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- Active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- On-board voltage regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and industrial applications requiring stable voltage regulation.
- Replacement for Zener diodes in various circuits.
Q & A
- What is the reference voltage of the TL431IDBZR?
The reference voltage (Vref) of the TL431IDBZR is approximately 2.495 V.
- What is the output voltage range of the TL431IDBZR?
The output voltage range can be set between Vref (2.495 V) and 36 V using two external resistors.
- What are the operating temperature ranges for the TL431IDBZR?
The TL431IDBZR operates from -40°C to 85°C.
- What is the typical output impedance of the TL431IDBZR?
The typical output impedance is 0.2 Ω.
- What are the different grades of reference voltage tolerance available for the TL431 family?
The TL431 family is available in three grades: 0.5%, 1%, and 2% (B, A, and standard grade respectively).
- Can the TL431IDBZR replace Zener diodes in some applications?
- What is the package type and size of the TL431IDBZR?
The TL431IDBZR comes in an SOT23 package with dimensions of 2.9 x 1.3 x 1 mm.
- What is the cathode current range of the TL431IDBZR?
The cathode current range is from 1 mA to 100 mA.
- Is the TL431IDBZR suitable for automotive applications?
- Where can I find detailed specifications and datasheets for the TL431IDBZR?
Detailed specifications and datasheets can be found on the official Texas Instruments website or through authorized distributors like Nexperia and TME.
