Overview
The TL431AIDG is a programmable precision shunt regulator diode produced by onsemi. This three-terminal integrated circuit operates as a low temperature coefficient zener diode, which can be programmed to output voltages from 2.495 V to 36 V using two external resistors. It is designed to provide a stable voltage reference and can be used in various applications such as digital voltmeters, power supplies, and op-amp circuitry.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Cathode to Anode Voltage | VKA | V | - | - | 37 |
| Cathode Current Range, Continuous | IK | mA | -100 | - | 150 |
| Reference Input Current Range, Continuous | Iref | mA | -0.05 | - | 10 |
| Operating Junction Temperature | TJ | °C | - | - | 150 |
| Operating Ambient Temperature Range | TA | °C | -40 | - | 85 |
| Reference Input Voltage | Vref | V | 2.44 | 2.495 | 2.55 |
| Dynamic Impedance | |ZKA| | Ω | 0.22 | - | 0.5 |
Key Features
- Programmable output voltage from 2.495 V to 36 V using two external resistors.
- Low dynamic output impedance of 0.22 Ω typical.
- Sink current capability of 1.0 mA to 100 mA.
- Equivalent full-range temperature coefficient of 50 ppm/°C typical.
- Temperature compensated for operation over the full rated operating temperature range.
- Low output noise voltage.
- Pb-free packages available.
Applications
- Digital voltmeters.
- Power supplies.
- Op-amp circuitry.
- Replacing zener diodes in various applications.
Q & A
- What is the TL431AIDG?
The TL431AIDG is a programmable precision shunt regulator diode produced by onsemi.
- What is the programmable voltage range of the TL431AIDG?
The TL431AIDG can be programmed to output voltages from 2.495 V to 36 V using two external resistors.
- What is the typical dynamic impedance of the TL431AIDG?
The typical dynamic impedance is 0.22 Ω.
- What is the sink current capability of the TL431AIDG?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating ambient temperature range of the TL431AIDG?
The operating ambient temperature range is from -40°C to 85°C.
- Is the TL431AIDG Pb-free?
- What are some common applications of the TL431AIDG?
- What is the maximum cathode to anode voltage for the TL431AIDG?
The maximum cathode to anode voltage is 37 V.
- What is the reference input voltage deviation over the temperature range for the TL431AIDG?
The reference input voltage deviation is typically within 50 ppm/°C over the full ambient temperature range.
- How does the TL431AIDG handle noise voltage?
The TL431AIDG has low output noise voltage, making it suitable for applications requiring stable voltage references.
