Overview
The TL431LIAQDBZR is a three-terminal adjustable shunt regulator manufactured by Texas Instruments. This device is part of the TL431 family, known for its specified thermal stability over a wide temperature range, making it suitable for automotive, commercial, and military applications. The TL431LIAQDBZR provides a precise reference voltage that can be adjusted between approximately 2.495V 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
| Attribute | Value |
|---|---|
| Package | SOT-23 (DBZ) |
| Pins | 3 |
| Operating Temperature Range | -40°C to 125°C |
| Reference Voltage Tolerance | ±1% (A grade) |
| Reference Voltage | Approximately 2.495V |
| Output Voltage Range | 2.495V to 36V |
| Output Impedance | Typically 0.2Ω |
| Sink-Current Capability | 1mA to 100mA |
| Power Dissipation | 950mW |
| Cathode Current | 0.6mA |
Key Features
- Adjustable output voltage from approximately 2.495V to 36V using two external resistors.
- Reference voltage tolerance of ±1% (A grade).
- Operation from -40°C to 125°C.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Internal current limiting for protection.
- Under-voltage lockout for minimum component count.
- Ideal for use as a bias reference in battery-powered applications due to low operating current.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Bias references in battery-powered applications.
- Replacement for Zener diodes in various applications.
Q & A
- What is the TL431LIAQDBZR?
The TL431LIAQDBZR is a three-terminal adjustable shunt regulator manufactured by Texas Instruments.
- What is the operating temperature range of the TL431LIAQDBZR?
The operating temperature range is from -40°C to 125°C.
- How is the output voltage of the TL431LIAQDBZR adjusted?
The output voltage can be adjusted between approximately 2.495V and 36V using two external resistors.
- What is the reference voltage tolerance of the TL431LIAQDBZR?
The reference voltage tolerance is ±1% (A grade).
- What is the typical output impedance of the TL431LIAQDBZR?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431LIAQDBZR?
The sink-current capability ranges from 1mA to 100mA.
- What are some common applications of the TL431LIAQDBZR?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, and as bias references in battery-powered applications.
- Can the TL431LIAQDBZR replace Zener diodes?
- What is the package type of the TL431LIAQDBZR?
The package type is SOT-23 (DBZ).
- What is the power dissipation of the TL431LIAQDBZR?
The power dissipation is 950mW.
