Overview
The TL431AIDRE4 is an adjustable shunt voltage reference integrated circuit produced by Texas Instruments. This device is part of the TL431 series, known for its high precision and versatility in voltage regulation. The TL431AIDRE4 is particularly suited for applications requiring a stable and adjustable voltage reference across a wide range of temperatures.
It features a three-terminal configuration, making it easy to integrate into various circuit designs. The device can be programmed to provide an output voltage between 2.5V and 36V using external resistors, offering flexibility in different power supply and voltage regulation scenarios.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Reference Input Voltage (Vref) | V | 2.44 | 2.495 | 2.55 |
| Cathode to Anode Voltage (VKA) | V | - | - | 37 |
| Cathode Current Range (IK) | mA | 1 | - | 100 |
| Reference Input Current Range (Iref) | mA | -0.05 | - | 10 |
| Operating Junction Temperature (TJ) | °C | - | - | 150 |
| Operating Ambient Temperature Range (TA) | °C | -40 | - | 125 |
| Dynamic Impedance (|ZKA|) | Ω | 0.22 | - | 0.5 |
Key Features
- Adjustable Output Voltage: The output voltage can be set to any value between 2.5V and 36V using two external resistors.
- Sink Current Capability: The device can sink currents from 1 mA to 100 mA.
- High Precision: The TL431AIDRE4 offers high voltage precision, with options for 0.5%, 1%, and 2% accuracy depending on the version.
- Low Dynamic Impedance: The device has a typical dynamic impedance of 0.22 Ω, ensuring stable voltage regulation.
- AEC-Q100 Qualified: Suitable for automotive applications due to its AEC-Q100 qualification and extended temperature range from -40°C to +125°C.
Applications
- Power Supplies: Used in various power supply designs to provide a stable and adjustable voltage reference.
- Industrial Control Systems: Suitable for industrial applications requiring precise voltage regulation.
- Automotive Systems: AEC-Q100 qualified, making it ideal for automotive applications where reliability and temperature stability are crucial.
Q & A
- What is the adjustable output voltage range of the TL431AIDRE4?
The output voltage can be set to any value between 2.5V and 36V using two external resistors.
- What is the sink current capability of the TL431AIDRE4?
The device can sink currents from 1 mA to 100 mA.
- What is the typical dynamic impedance of the TL431AIDRE4?
The typical dynamic impedance is 0.22 Ω).
- Is the TL431AIDRE4 suitable for automotive applications?
- What is the operating junction temperature of the TL431AIDRE4?
The operating junction temperature is up to 150°C).
- What is the reference input voltage deviation over the temperature range?
The reference input voltage deviation over the temperature range is typically within 7 to 30 mV).
- How is the output voltage of the TL431AIDRE4 programmed?
The output voltage is programmed using two external resistors connected to the reference and cathode terminals).
- What are the common applications of the TL431AIDRE4?
- What is the package type of the TL431AIDRE4?
The TL431AIDRE4 is available in an 8-pin SOIC package).
- What is the off-state cathode current of the TL431AIDRE4?
The off-state cathode current is typically between 20 nA and 1000 nA).
