Overview
The TL431AIDCKT, produced by Texas Instruments, is a three-terminal adjustable shunt regulator known for its high precision and thermal stability. This device is part of the TL431 series, which is widely used in various applications requiring stable voltage regulation. The TL431AIDCKT offers adjustable output voltage, low output noise, and a wide operating temperature range, making it suitable for automotive, commercial, and military applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Style | SOT-23 (SC-59, TO-236) | |
| Operating Temperature Range | -40°C to 85°C | |
| Reference Voltage | 2.495V | V |
| Output Voltage Range | 2.47V to 36V | V |
| Output Impedance | 0.2Ω (Typical) | Ω |
| Cathode Current Range | 1mA to 100mA | mA |
| Power Dissipation | 950mW | mW |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V, set by two external resistors.
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- Operation from -40°C to 125°C, with different temperature grades (C, I, Q).
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability: 1mA to 100mA.
- Surface mount packaging in SOT-23 format.
Applications
- Shunt regulator.
- Precision current limiter.
- Precision constant current sink.
- Isolated feedback loop for Switch Mode Power Supply (SMPS).
- Rack server power, industrial AC/DC, AC inverter & VF drives, servo drive control module, and notebook PC power adapter design.
Q & A
- What is the TL431AIDCKT used for?
The TL431AIDCKT is used as a three-terminal adjustable shunt regulator for applications requiring stable voltage regulation.
- What is the operating temperature range of the TL431AIDCKT?
The operating temperature range is from -40°C to 85°C, with different grades available for wider temperature ranges.
- How is the output voltage of the TL431AIDCKT adjusted?
The output voltage can be adjusted using two external resistors to any value between Vref (approximately 2.5V) and 36V.
- What is the typical output impedance of the TL431AIDCKT?
The typical output impedance is 0.2Ω.
- What are the common applications of the TL431AIDCKT?
Common applications include shunt regulators, precision current limiters, precision constant current sinks, and isolated feedback loops for SMPS.
- What is the reference voltage tolerance of the TL431AIDCKT at 25°C?
The reference voltage tolerance at 25°C is 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- What is the maximum power dissipation of the TL431AIDCKT?
The maximum power dissipation is 950mW.
- What is the cathode current range of the TL431AIDCKT?
The cathode current range is from 1mA to 100mA.
- What type of packaging does the TL431AIDCKT come in?
The TL431AIDCKT comes in SOT-23 (SC-59, TO-236) surface mount packaging.
- Is the TL431AIDCKT suitable for automotive applications?
Yes, the TL431AIDCKT is suitable for automotive applications due to its specified thermal stability over applicable automotive temperature ranges.
