Overview
The TL431AIDMR2 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 replace zener diodes in various applications, offering a wide operating current range and low dynamic impedance, making it suitable for use in digital voltmeters, power supplies, and op-amp circuitry.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Input Voltage (Vref) | 2.44 to 2.495 | V |
| Voltage Reference Tolerance | ±1% (Typ @ 25°C) | % |
| Dynamic Output Impedance | 0.22 Ω (Typical) | Ω |
| Sink Current Capability | 1.0 mA to 100 mA | mA |
| Equivalent Full-Range Temperature Coefficient | 50 ppm/°C (Typical) | ppm/°C |
| Operating Ambient Temperature Range | -40°C to +125°C | °C |
| Cathode to Anode Voltage (VKA) | 37 V | V |
| Package Type | Micro8 |
Key Features
- Programmable Output Voltage to 36 V
- Voltage Reference Tolerance: ±1% (Typ @ 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
- Digital Voltmeters
- Power Supplies
- Op-Amp Circuitry
- Feedback Control for Driving Optocouplers in Power Supplies
- Voltage Monitors
- Constant Current Sources and Sinks
- Series Pass Regulators
Q & A
- What is the TL431AIDMR2?
The TL431AIDMR2 is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431AIDMR2?
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 TL431AIDMR2?
The typical dynamic impedance is 0.22 Ω.
- What is the sink current capability of the TL431AIDMR2?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating ambient temperature range of the TL431AIDMR2?
The operating ambient temperature range is -40°C to +125°C.
- What are some common applications of the TL431AIDMR2?
Common applications include digital voltmeters, power supplies, op-amp circuitry, and feedback control for driving optocouplers in power supplies.
- Is the TL431AIDMR2 Pb-free?
- What is the maximum cathode to anode voltage (VKA) for the TL431AIDMR2?
The maximum cathode to anode voltage (VKA) is 37 V.
- What is the equivalent full-range temperature coefficient of the TL431AIDMR2?
The equivalent full-range temperature coefficient is 50 ppm/°C (Typical).
- What package type is the TL431AIDMR2 available in?
The TL431AIDMR2 is available in a Micro8 package.
