Overview
The TL431CZT is an adjustable shunt voltage reference produced by STMicroelectronics. It is part of the TL431 and TL432 series, known for their guaranteed temperature stability across the entire operating temperature range. This device is particularly useful in applications requiring a stable voltage reference with adjustable output. The TL431CZT operates within a wide temperature range, making it suitable for various industrial, automotive, and power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Input Voltage (Vref) | 2.44 - 2.495 | V |
| Adjustable Output Voltage | 2.5 - 36 | V |
| Sink Current Capability | 1 - 100 | mA |
| Typical Output Impedance | 0.22 | Ω |
| Voltage Precision | 1% and 2% | - |
| Operating Temperature Range | 0 to +70 | °C |
| Cathode to Anode Voltage (VKA) | 37 | V |
| Thermal Resistance Junction to Ambient (Rthja) | 200 | °C/W |
| Storage Temperature Range | -65 to +150 | °C |
Key Features
- AEC-Q100 qualified for automotive applications
- Adjustable output voltage from 2.5 to 36 V using two external resistors
- Sink current capability from 1 to 100 mA
- Typical output impedance of 0.22 Ω
- Voltage precision options: 0.5% (TL431B version), 1%, and 2%
- Extended temperature range for automotive versions: -40 °C to +125 °C
Applications
- Power supply systems requiring stable voltage references
- Industrial control and automation systems
- Automotive systems, including those requiring AEC-Q100 qualification
- Regulated power supplies and voltage regulators
Q & A
- What is the adjustable output voltage range of the TL431CZT?
The TL431CZT can be adjusted to output any voltage between 2.5 and 36 V using two external resistors.
- What is the sink current capability of the TL431CZT?
The TL431CZT can sink current in the range of 1 to 100 mA.
- What is the typical output impedance of the TL431CZT?
The typical output impedance of the TL431CZT is 0.22 Ω.
- What are the voltage precision options for the TL431 series?
The TL431 series offers voltage precision options of 0.5% (TL431B version), 1%, and 2%.
- What is the operating temperature range for the TL431CZT?
The operating temperature range for the TL431CZT is 0 to +70 °C, with extended ranges for automotive versions.
- Is the TL431CZT AEC-Q100 qualified?
Yes, the TL431CZT is AEC-Q100 qualified, making it suitable for automotive applications.
- What is the maximum cathode to anode voltage (VKA) for the TL431CZT?
The maximum cathode to anode voltage (VKA) for the TL431CZT is 37 V.
- What is the thermal resistance junction to ambient (Rthja) for the TL431CZT in a TO-92 package?
The thermal resistance junction to ambient (Rthja) for the TL431CZT in a TO-92 package is 200 °C/W).
- What are the common applications of the TL431CZT?
The TL431CZT is commonly used in power supply systems, industrial control systems, automotive systems, and regulated power supplies).
- How do you set the output voltage of the TL431CZT?
The output voltage of the TL431CZT can be set using two external resistors).
