Overview
The TL431BIDCKT is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its specified thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The TL431BIDCKT offers adjustable output voltage, low output noise, and a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in various power supply configurations.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-SC70 (DCK), 6 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) |
| Adjustable Output Voltage | Vref (approximately 2.5V) to 36V |
| Typical Output Impedance | 0.2Ω |
| Sink-Current Capability | 1mA to 100mA |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) |
Key Features
- Adjustable output voltage: Vref to 36V with two external resistors.
- Operation from -40°C to 125°C.
- Low output noise.
- Typical output impedance of 0.2Ω.
- Sink-current capability: 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.
- Automotive, commercial, and military applications due to its thermal stability.
Q & A
- What is the TL431BIDCKT?
The TL431BIDCKT is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the operating temperature range of the TL431BIDCKT?
The operating temperature range is from -40°C to 125°C.
- How is the output voltage of the TL431BIDCKT adjusted?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What are the typical applications of the TL431BIDCKT?
It is used in on-board regulation, adjustable power supplies, and switching power supplies.
- What are the different grades of the TL431BIDCKT based on reference voltage tolerance?
The device is available in three grades with initial tolerances of 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the typical output impedance of the TL431BIDCKT?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431BIDCKT?
The sink-current capability ranges from 1mA to 100mA.
- Why is the TL431BIDCKT a good replacement for Zener diodes?
It has a sharp turn-on characteristic and low output noise, making it an excellent replacement for Zener diodes in many applications.
- What are the different temperature ranges for the TL43xx devices?
The TL43xxC devices operate from 0°C to 70°C, the TL43xxI devices from -40°C to 85°C, and the TL43xxQ devices from -40°C to 125°C.
- What package type is the TL431BIDCKT available in?
The TL431BIDCKT is available in the SOT-SC70 (DCK) package with 6 pins.
