Overview
The TL431BIDMR2G is a three-terminal programmable shunt regulator diode produced by onsemi. This device is part of the TL431, A, B series and operates as a low temperature coefficient zener diode that can be programmed from the reference voltage (Vref) 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 | Value | Unit |
|---|---|---|---|
| Reference Input Voltage | Vref | 2.44 - 2.495 | V |
| Voltage Reference Tolerance | ±0.4% (Typ @ 25°C) | % | |
| Dynamic Output Impedance | 0.22 Ω (Typical) | Ω | |
| Sink Current Capability | IK | 1.0 mA to 100 mA | mA |
| Operating Junction Temperature | TJ | -40°C to 85°C | °C |
| Cathode to Anode Voltage | VKA | 37 V | V |
| Thermal Resistance, Junction-to-Ambient | RθJA | 114 °C/W (Micro8 Package) | °C/W |
Key Features
- Programmable Output Voltage to 36 V
- Voltage Reference Tolerance: ±0.4% (Typical at 25°C)
- Low Dynamic Output Impedance: 0.22 Ω (Typical)
- Sink Current Capability: 1.0 mA to 100 mA
- Equivalent Full-Range Temperature Coefficient: 50 ppm/°C (Typical)
- Temperature Compensated for Operation over Full Rated Operating Temperature Range
- Low Output Noise Voltage
- Pb-Free Packages Available
Applications
The TL431BIDMR2G is suitable for a variety of applications, including:
- Digital Voltmeters
- Power Supplies
- Op-Amp Circuitry
- Replacing Zener Diodes in many circuits
- Providing stable references from 5.0 V logic supplies
Q & A
- What is the TL431BIDMR2G?
The TL431BIDMR2G is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431BIDMR2G?
The output voltage can be programmed from the reference voltage (Vref) to 36 V using two external resistors.
- What is the typical voltage reference tolerance of the TL431BIDMR2G?
The voltage reference tolerance is ±0.4% at 25°C.
- What is the dynamic output impedance of the TL431BIDMR2G?
The dynamic output impedance is typically 0.22 Ω.
- What is the sink current capability of the TL431BIDMR2G?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating junction temperature range of the TL431BIDMR2G?
The operating junction temperature range is -40°C to 85°C.
- What are some common applications of the TL431BIDMR2G?
Common applications include digital voltmeters, power supplies, op-amp circuitry, and replacing zener diodes.
- Is the TL431BIDMR2G available in Pb-Free packages?
- What is the thermal resistance of the TL431BIDMR2G in the Micro8 package?
The thermal resistance, junction-to-ambient, is 114 °C/W for the Micro8 package.
- Can the TL431BIDMR2G be used as a positive or negative voltage reference?
