Overview
The TL431BCDBZTG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The TL431BCDBZTG4 allows for adjustable output voltage settings between the reference voltage (approximately 2.5V) and 36V, using two external resistors. It features active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% | - |
| Adjustable Output Voltage Range | Vref to 36V | V |
| Operating Temperature Range | -40°C to 125°C | °C |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
| Output Impedance | 0.2Ω | Ω |
| Sink-Current Capability | 1mA to 100mA | mA |
| Package Type | SOT-23 (DBZ) | - |
| Package Size | 2.9 x 1.3 x 1 mm | mm |
Key Features
- Adjustable output voltage between Vref (approximately 2.5V) and 36V using two external resistors.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Operation from -40°C to 125°C with low temperature drift.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- Active output circuitry providing a sharp turn-on characteristic, making it a good replacement for Zener diodes.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and military applications due to its thermal stability.
Q & A
- What is the TL431BCDBZTG4? The TL431BCDBZTG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431BCDBZTG4? The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What are the operating temperature ranges for the TL431BCDBZTG4? The device operates from -40°C to 125°C.
- What is the typical output impedance of the TL431BCDBZTG4? The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431BCDBZTG4? The sink-current capability ranges from 1mA to 100mA.
- In what package is the TL431BCDBZTG4 available? The TL431BCDBZTG4 is available in the SOT-23 (DBZ) package.
- What are the key applications of the TL431BCDBZTG4? Key applications include on-board regulation, adjustable power supplies, and switching power supplies.
- How does the TL431BCDBZTG4 compare to Zener diodes? The TL431BCDBZTG4 has active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What are the different grades of the TL431 device? The TL431 device is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- What is the reference voltage tolerance of the TL431BCDBZTG4 at 25°C? The reference voltage tolerance is 0.5% for the B grade.
