Overview
The TL431IDR2G is a three-terminal programmable shunt regulator diode produced by onsemi. This monolithic IC voltage reference operates as a low temperature coefficient zener that can be programmed from 2.5 V to 36 V using two external resistors. It is designed to offer a wide operating current range of 1.0 mA to 100 mA and features a typical dynamic impedance of 0.22 Ω. The device is suitable for various applications, including digital voltmeters, power supplies, and op-amp circuitry, due to its stable reference voltage and low output noise.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Input Voltage (Vref) | 2.44 - 2.495 | V |
| Voltage Reference Tolerance (Typ @ 25°C) | ±0.4% (TL431B), ±2.2% (TL431C) | % |
| Dynamic Output Impedance | 0.22 Ω (Typical) | Ω |
| Sink Current Capability | 1.0 mA to 100 mA | mA |
| Temperature Coefficient | 50 ppm/°C (Typical) | ppm/°C |
| Operating Ambient Temperature Range | -40°C to +125°C | °C |
| Cathode to Anode Voltage (VKA) | Up to 36 V | V |
| Package Type | SOIC-8 |
Key Features
- Programmable output voltage from 2.5 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.
- Industrial and automotive applications, especially where temperature stability is crucial.
Q & A
- What is the TL431IDR2G? The TL431IDR2G is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431IDR2G? The output voltage can be programmed from 2.5 V to 36 V using two external resistors.
- What is the typical dynamic impedance of the TL431IDR2G? The typical dynamic impedance is 0.22 Ω.
- What is the sink current capability of the TL431IDR2G? The sink current capability ranges from 1.0 mA to 100 mA.
- What is the temperature coefficient of the TL431IDR2G? The equivalent full-range temperature coefficient is 50 ppm/°C (Typical).
- What are the operating temperature ranges for the TL431IDR2G? The operating ambient temperature range is -40°C to +125°C.
- What types of applications is the TL431IDR2G suitable for? It is suitable for digital voltmeters, power supplies, op-amp circuitry, and industrial and automotive applications.
- Is the TL431IDR2G Pb-Free? Yes, Pb-Free packages are available.
- What is the package type of the TL431IDR2G? The package type is SOIC-8.
- What is the reference input voltage tolerance for the TL431IDR2G? The voltage reference tolerance is ±0.4% (Typical for TL431B) and ±2.2% (Typical for TL431C).
