Overview
The TL431AIYDT is an adjustable shunt voltage reference produced by STMicroelectronics. This device is part of the TL431 and TL432 series, known for their guaranteed temperature stability over a wide operating temperature range. The TL431AIYDT is specifically designed for automotive applications, with an operating temperature range of -40°C to +125°C. It allows for adjustable output voltage settings between 2.5 and 36 V using two external resistors, making it highly versatile for various power management needs.
Key Specifications
| Parameter | Unit | Min. | Typ. | Max. |
|---|---|---|---|---|
| Reference Input Voltage (Vref) | V | 2.44 | 2.41 | 2.495 |
| Cathode to Anode Voltage (VKA) | V | - | - | 37 |
| Continuous Cathode Current Range (Ik) | mA | -100 | - | 150 |
| Reference Input Current Range (Iref) | mA | -0.05 | - | 10 |
| Operating Junction Temperature Range (TJ) | °C | -40 | - | 125 |
| Thermal Resistance Junction to Ambient (Rthja) | °C/W | - | - | 221 |
| Typical Output Impedance | Ω | - | 0.22 | - |
Key Features
- AEC-Q100 qualified for automotive applications
- Adjustable output voltage: 2.5 to 36 V using two external resistors
- Sink current capability: 1 to 100 mA
- Typical output impedance: 0.22 Ω
- 0.5% voltage precision (only on TL431B version), 1% and 2% voltage precision for other versions
- Operating temperature range: -40°C to +125°C for automotive versions
- Low output noise
Applications
- Power supply systems
- Industrial applications
- Automotive systems
- Rack server power
- Industrial AC/DC converters
- AC inverter and variable frequency drives
- Servo drive control modules
- Notebook PC power adapters
Q & A
- What is the operating temperature range of the TL431AIYDT?
The operating temperature range of the TL431AIYDT is -40°C to +125°C, making it suitable for automotive applications.
- How is the output voltage of the TL431AIYDT adjusted?
The output voltage can be adjusted to any value between 2.5 and 36 V using two external resistors.
- What is the sink current capability of the TL431AIYDT?
The TL431AIYDT has a sink current capability ranging from 1 to 100 mA.
- What is the typical output impedance of the TL431AIYDT?
The typical output impedance is 0.22 Ω.
- Is the TL431AIYDT AEC-Q100 qualified?
- What are the voltage precision options for the TL431 series?
The TL431 series offers 0.5% (B grade), 1% (A grade), and 2% (Standard grade) voltage precision options.
- What is the maximum cathode to anode voltage (VKA) for the TL431AIYDT?
The maximum cathode to anode voltage (VKA) is 37 V.
- What is the thermal resistance junction to ambient (Rthja) for the TL431AIYDT?
The thermal resistance junction to ambient (Rthja) is up to 221 °C/W.
- What are some common applications of the TL431AIYDT?
- Does the TL431AIYDT have low output noise?
