Overview
The TL431ACDBZRG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 family, known for its thermal stability across various temperature ranges, including automotive, commercial, and military applications. The device allows for adjustable output voltage between the reference voltage (approximately 2.5V) and 36V, using two external resistors. This makes it an excellent replacement for Zener diodes in many applications, such as on-board regulation, adjustable power supplies, and switching power supplies.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23 (DBZ), 3 pins |
| Operating Temperature Range | −40°C to 125°C (Q grade) |
| Reference Voltage Tolerance at 25°C | 1% (A grade) |
| Adjustable Output Voltage | Vref (approximately 2.5V) to 36V |
| Typical Output Impedance | 0.2Ω |
| Sink-Current Capability | 1mA to 100mA |
| Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) |
| Low Output Noise | Yes |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Operation from −40°C to 125°C, with different temperature grades (C, I, Q).
- Low output impedance of 0.2Ω and low output noise.
- Sink-current capability from 1mA to 100mA.
- Sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Replacement for Zener diodes in various applications.
Q & A
- What is the TL431ACDBZRG4? The TL431ACDBZRG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431ACDBZRG4? 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 TL431ACDBZRG4? The device operates from −40°C to 125°C, with different temperature grades (C, I, Q).
- What is the typical output impedance of the TL431ACDBZRG4? The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431ACDBZRG4? The sink-current capability ranges from 1mA to 100mA.
- What are the initial tolerance grades for the TL431ACDBZRG4? The device is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- What are some common applications of the TL431ACDBZRG4? Common applications include on-board regulation, adjustable power supplies, switching power supplies, and as a replacement for Zener diodes.
- How does the TL431ACDBZRG4 compare to Zener diodes? The TL431ACDBZRG4 has a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the package type for the TL431ACDBZRG4? The device is packaged in SOT-23 (DBZ) with 3 pins.
- Is the TL431ACDBZRG4 suitable for military temperature ranges? Yes, the device is specified for thermal stability over applicable automotive, commercial, and military temperature ranges.
