Overview
The TL431BVDMR2G is a three-terminal programmable shunt regulator diode produced by onsemi. This 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 part of the TL431, A, B series and is known for its wide operating current range and low dynamic impedance, making it an excellent replacement for zener diodes in various applications.
Key Specifications
| Characteristic | Symbol | Unit | Min | Max | |
|---|---|---|---|---|---|
| Reference Input Voltage | Vref | V | 2.44 | 2.495 | 2.55 |
| 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 | - | 125 |
| Dynamic Output Impedance | ZKA | Ω | - | 0.22 | - |
| Voltage Reference Tolerance | - | % | - | ±0.4 | - |
| Temperature Coefficient | - | ppm/°C | - | 50 | - |
Key Features
- Programmable Output Voltage to 36 V using two external resistors
- Voltage Reference Tolerance: ±0.4% typical at 25°C (TL431B)
- Low Dynamic Output Impedance, 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 Full Rated Operating Temperature Range
- Low Output Noise Voltage
- Pb-Free Packages are Available
Applications
- Digital Voltmeters
- Power Supplies
- Op Amp Circuitry
- Replacement for Zener Diodes in various applications
Q & A
- What is the TL431BVDMR2G used for?
The TL431BVDMR2G is used as a programmable shunt regulator diode, often replacing zener diodes in applications such as digital voltmeters, power supplies, and op amp circuitry.
- What is the programmable output voltage range of the TL431BVDMR2G?
The output voltage can be programmed from 2.495 V to 36 V using two external resistors.
- What is the typical voltage reference tolerance of the TL431BVDMR2G?
The typical voltage reference tolerance is ±0.4% at 25°C.
- What is the dynamic output impedance of the TL431BVDMR2G?
The dynamic output impedance is typically 0.22 Ω.
- What is the operating current range of the TL431BVDMR2G?
The operating current range is from 1.0 mA to 100 mA.
- What is the temperature coefficient of the TL431BVDMR2G?
The equivalent full-range temperature coefficient is 50 ppm/°C typical.
- What are the operating temperature ranges for the TL431BVDMR2G?
The operating ambient temperature range is from -40°C to 125°C.
- Is the TL431BVDMR2G available in Pb-Free packages?
- What is the maximum junction temperature for the TL431BVDMR2G?
The maximum junction temperature is 150°C.
- What are some common applications of the TL431BVDMR2G?
