Overview
The TS431AIYLT is a low-voltage, three-terminal, adjustable shunt voltage reference produced by STMicroelectronics. This component is designed to operate at a lower voltage and lower cathode current compared to other widely-used shunt voltage references like the TL431 and TL1431. The TS431AIYLT is particularly suitable for regulating 3.3 V switching power supplies and is often used in applications requiring precise voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Range | 1.24 to 6 V | V |
| Voltage Precision | 2%, 1%, 0.5% | % |
| Cathode Current Range | 60 μA to 30 mA | A |
| Output Impedance | 0.2 Ω | Ω |
| ESD Protection | Human body model: 2 kV, Machine model: 200 V | V |
| Temperature Coefficient | 100 ppm/°C | ppm/°C |
| Operating Temperature Range | -40 to +125 °C | °C |
| Package | SOT23-5L | - |
| Grade | Automotive (AEC-Q100 qualified) | - |
Key Features
- AEC-Q100 qualified for automotive applications
- Low voltage operation: 1.24 to 6 V
- High voltage precision: 2%, 1%, and 0.5% options
- Wide operating range cathode current: 60 μA to 30 mA
- Low output impedance: 0.2 Ω
- Typically stable for any capacitive loads
- ESD protection: Human body model 2 kV, Machine model 200 V
- 100 ppm/°C temperature coefficient
Applications
The TS431AIYLT is suitable for various applications requiring precise voltage regulation, including:
- Regulating 3.3 V switching power supplies
- Automotive systems due to its AEC-Q100 qualification
- General-purpose low-power adjustable shunt voltage reference in electronic circuits
- Driving optocouplers in power supply designs
Q & A
- What is the output voltage range of the TS431AIYLT?
The output voltage can be set to any value between 1.24 V and 6 V using two external resistors. - What are the voltage precision options for the TS431AIYLT?
The TS431AIYLT is available with 2%, 1%, and 0.5% voltage precision. - What is the operating temperature range of the TS431AIYLT?
The operating temperature range is -40 to +125 °C. - Is the TS431AIYLT suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications. - What is the maximum output current of the TS431AIYLT?
The maximum output current is 30 mA. - Does the TS431AIYLT have ESD protection?
Yes, it has ESD protection with a human body model of 2 kV and a machine model of 200 V. - What is the typical output impedance of the TS431AIYLT?
The typical output impedance is 0.2 Ω. - Is the TS431AIYLT stable for capacitive loads?
Yes, it is typically stable for any capacitive loads. - What is the temperature coefficient of the TS431AIYLT?
The temperature coefficient is 100 ppm/°C. - In what package is the TS431AIYLT available?
The TS431AIYLT is available in the SOT23-5L package.
