Overview
The TL431AIDMR2G is a three-terminal programmable shunt regulator diode produced by onsemi. This monolithic IC operates as a low temperature coefficient zener diode, which can be programmed from the reference voltage (Vref) to 36 V using two external resistors. It is part of the TL431 series, known for its wide operating current range and low dynamic output impedance, making it an excellent replacement for zener diodes in various applications.
Key Specifications
| Characteristic | Symbol | Typical Value | Unit |
|---|---|---|---|
| Programmable Output Voltage | Vout | 2.5 V to 36 V | V |
| Voltage Reference Tolerance | VKA | ± 0.4% @ 25°C (TL431B) | % |
| Dynamic Output Impedance | ZKA | 0.22 Ω Typical | Ω |
| Sink Current Capability | I_K | 1.0 mA to 100 mA | mA |
| Temperature Coefficient | - | 50 ppm/°C Typical | ppm/°C |
| Operating Junction Temperature | TJ | -40°C to +85°C | °C |
| Storage Temperature Range | Tstg | -65°C to +150°C | °C |
| Package Type | - | Micro8 | - |
| Pb-Free | - | Available | - |
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
The TL431AIDMR2G is suitable for various applications, including:
- Digital voltmeters.
- Power supplies.
- Op-amp circuitry.
- Any application requiring a stable and programmable voltage reference.
Q & A
- What is the programmable output voltage range of the TL431AIDMR2G?
The TL431AIDMR2G can be programmed to output voltages from 2.5 V to 36 V using two external resistors.
- What is the typical dynamic output impedance of the TL431AIDMR2G?
The typical dynamic output impedance is 0.22 Ω.
- What is the sink current capability of the TL431AIDMR2G?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the temperature coefficient of the TL431AIDMR2G?
The equivalent full-range temperature coefficient is 50 ppm/°C typical.
- Is the TL431AIDMR2G temperature compensated?
Yes, it is temperature compensated for operation over the full rated operating temperature range.
- What is the operating junction temperature range of the TL431AIDMR2G?
The operating junction temperature range is -40°C to +85°C.
- What package types are available for the TL431AIDMR2G?
The TL431AIDMR2G is available in a Micro8 package.
- Is the TL431AIDMR2G Pb-free?
Yes, Pb-free packages are available.
- What are some common applications for the TL431AIDMR2G?
Common applications include digital voltmeters, power supplies, and op-amp circuitry.
- How does the TL431AIDMR2G compare to traditional zener diodes?
The TL431AIDMR2G offers better stability and programmability compared to traditional zener diodes, making it an excellent replacement in many applications.
