Overview
The TL431ACDMR2G 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 the reference voltage (Vref) up to 36 V using two external resistors. It is part of the TL431 series, known for its wide operating current range of 1.0 mA to 100 mA and low dynamic impedance. The device is suitable for various applications, including digital voltmeters, power supplies, and op-amp circuitry, due to its stable reference voltage and versatility as either a positive or negative voltage reference.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reference Input Voltage (Vref) | Vref | 2.47 | 2.495 | 2.52 | V |
| Reference Input Voltage Deviation Over Temperature Range | ΔVref | -3.0 | - | 17 | mV |
| Dynamic Impedance | ZKA | 0.2 | 0.22 | 0.5 | Ω |
| Sink Current Capability | IKA | 1.0 | - | 100 | mA |
| Operating Temperature Range | TA | 0 | - | 70 | °C |
| Voltage Reference Tolerance (TL431B) | - | - | ±0.4% | - | % @ 25°C |
Key Features
- Programmable Output Voltage to 36 V using two external resistors
- Voltage Reference Tolerance: ±0.4% (Typ @ 25°C for TL431B grade)
- 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
- Rack Server Power
- Industrial AC/DC
- AC Inverter & VF Drives
- Servo Drive Control Module
- Notebook PC Power Adapter Design
Q & A
- What is the TL431ACDMR2G?
The TL431ACDMR2G is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431ACDMR2G?
The output voltage can be programmed from the reference voltage (Vref) up to 36 V using two external resistors.
- What is the typical dynamic impedance of the TL431ACDMR2G?
The typical dynamic impedance is 0.22 Ω.
- What is the sink current capability of the TL431ACDMR2G?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating temperature range of the TL431ACDMR2G?
The operating temperature range is from 0°C to 70°C.
- What is the voltage reference tolerance for the TL431B grade?
The voltage reference tolerance for the TL431B grade is ±0.4% at 25°C.
- What are some common applications of the TL431ACDMR2G?
Common applications include digital voltmeters, power supplies, op-amp circuitry, rack server power, industrial AC/DC, AC inverter & VF drives, servo drive control modules, and notebook PC power adapter designs.
- Is the TL431ACDMR2G available in Pb-Free packages?
- What is the equivalent full-range temperature coefficient of the TL431ACDMR2G?
The equivalent full-range temperature coefficient is 50 ppm/°C typical.
- Does the TL431ACDMR2G have low output noise voltage?
