Overview
The TL431ACDG is a three-terminal programmable shunt regulator diode produced by onsemi. This monolithic IC voltage reference operates as a low temperature coefficient zener, which can be programmed from 2.5 V to 36 V using two external resistors. The device is known for its wide operating current range of 1.0 mA to 100 mA and its low dynamic impedance, making it an excellent replacement for zener diodes in various applications.
Key Specifications
| Characteristic | Symbol | 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 | 1.0 | - | 100 |
| Reference Input Current Range | Iref | mA | -0.05 | - | 10 |
| Operating Junction Temperature | TJ | °C | - | - | 150 |
| Operating Ambient Temperature Range | TA | °C | 0 | - | 70 |
| Dynamic Impedance | |ZKA| | Ω | 0.22 | - | 0.5 |
| Temperature Coefficient | - | ppm/°C | - | 50 | - |
Key Features
- Adjustable output voltage from 2.5 V to 36 V using two external resistors.
- Sink current capability of 1.0 mA to 100 mA.
- Low dynamic output impedance of 0.22 Ω typical.
- Low output noise voltage.
- Temperature compensated for operation over the full rated operating temperature range.
- Pb-free packages available.
- AEC-Q100 qualified for automotive applications.
Applications
- Digital voltmeters.
- Power supplies.
- Op-amp circuitry.
- Automotive systems.
- Industrial applications).
Q & A
- What is the TL431ACDG?
The TL431ACDG is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the adjustable output voltage range of the TL431ACDG?
The output voltage can be adjusted from 2.5 V to 36 V using two external resistors.
- What is the operating current range of the TL431ACDG?
The device operates with a current range of 1.0 mA to 100 mA.
- What is the typical dynamic impedance of the TL431ACDG?
The typical dynamic impedance is 0.22 Ω.
- What is the temperature coefficient of the TL431ACDG?
The temperature coefficient is typically 50 ppm/°C.
- What are the operating temperature ranges for the TL431ACDG?
The operating ambient temperature range is from 0°C to 70°C.
- Is the TL431ACDG AEC-Q100 qualified?
Yes, the TL431ACDG is AEC-Q100 qualified for automotive applications.
- What are some common applications of the TL431ACDG?
Common applications include digital voltmeters, power supplies, op-amp circuitry, and automotive systems.
- Are Pb-free packages available for the TL431ACDG?
Yes, Pb-free packages are available.
- What is the maximum junction temperature for the TL431ACDG?
The maximum junction temperature is 150°C.
