Overview
The TS431AILT 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 TS431AILT allows the output voltage to be set to any value between 1.24 V and 6 V using two external resistors, making it highly versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Cathode to Anode Voltage (VKA) | 1.24 to 6 | V |
| Cathode Current (Ik) | 60 µA to 30 mA | A |
| Output Voltage Precision | 2%, 1%, 0.5% | % |
| Output Impedance (RKA) | 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 | Industrial | - |
| RoHS Compliance Grade | Ecopack2 | - |
Key Features
- AEC-Q100 qualified for automotive applications
- Low voltage operation: 1.24 to 6 V
- High voltage precision: 2%, 1%, and 0.5%
- Wide operating range of 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
- Automotive grade version available
Applications
The TS431AILT is particularly suitable for various applications, including:
- Regulating 3.3 V switching power supplies, especially when driving an optocoupler.
- General-purpose low-power adjustable shunt voltage reference applications.
- Automotive and industrial systems requiring high reliability and precision voltage references.
- Systems that require stable voltage references over a wide range of temperatures and cathode currents.
Q & A
- What is the operating voltage range of the TS431AILT?
The TS431AILT operates within a voltage range of 1.24 V to 6 V.
- What are the precision levels available for the TS431AILT?
The TS431AILT is available with 2%, 1%, and 0.5% voltage precision.
- What is the range of cathode current for the TS431AILT?
The cathode current range for the TS431AILT is from 60 µA to 30 mA.
- What is the output impedance of the TS431AILT?
The output impedance of the TS431AILT is typically 0.2 Ω.
- Does the TS431AILT have ESD protection?
Yes, the TS431AILT has ESD protection with a Human Body Model rating of 2 kV and a Machine Model rating of 200 V.
- What is the temperature coefficient of the TS431AILT?
The temperature coefficient of the TS431AILT is 100 ppm/°C.
- What is the operating temperature range of the TS431AILT?
The operating temperature range of the TS431AILT is -40 to +125 °C.
- Is the TS431AILT AEC-Q100 qualified?
Yes, the TS431AILT is AEC-Q100 qualified, making it suitable for automotive applications.
- What package types are available for the TS431AILT?
The TS431AILT is available in the SOT23-5L package.
- Is the TS431AILT RoHS compliant?
Yes, the TS431AILT is RoHS compliant with an Ecopack2 rating.
