Overview
The TL431CDG, produced by onsemi, is a three-terminal programmable shunt regulator diode. This integrated circuit operates as a low temperature coefficient zener, which can be programmed to output voltages from the internal 2.5 V reference up to 36 V using two external resistors. It is widely used in various applications due to its stable and adjustable voltage reference capabilities.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Cathode to Anode Voltage | VKA | 37 | V |
| Cathode Current Range, Continuous | IK | -100 to +150 | mA |
| Reference Input Current Range, Continuous | Iref | -0.05 to +10 | mA |
| Operating Junction Temperature | TJ | 150 | °C |
| Operating Ambient Temperature Range | TA | 0 to +70 | °C |
| Reference Input Voltage | Vref | 2.44 to 2.495 | V |
| Voltage Reference Tolerance | ±2.2% | ||
| Dynamic Impedance | |ZKA| | 0.22 Ω (Typical) | |
| Sink Current Capability | 1.0 mA to 100 mA | ||
| Temperature Coefficient | 50 ppm/°C (Typical) |
Key Features
- Programmable Output Voltage to 36 V using two external resistors.
- Voltage Reference Tolerance: ±2.2% (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, Halogen Free/BFR Free and RoHS Compliant.
Applications
The TL431CDG is versatile and can be used in a variety of applications, including:
- Digital voltmeters and other precision measurement instruments.
- Power supplies, especially for feedback control and voltage regulation.
- Op-amp circuitry where a stable reference voltage is required.
- Driving optocouplers in power supplies and other feedback control circuits.
Q & A
- What is the TL431CDG?
The TL431CDG is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431CDG?
The TL431CDG can be programmed to output voltages from the internal 2.5 V reference up to 36 V using two external resistors.
- What is the voltage reference tolerance of the TL431CDG?
The voltage reference tolerance is ±2.2% (Typical at 25°C).
- What is the dynamic impedance of the TL431CDG?
The dynamic impedance is 0.22 Ω (Typical).
- What is the sink current capability of the TL431CDG?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating temperature range of the TL431CDG?
The operating ambient temperature range is 0 to +70°C.
- Is the TL431CDG RoHS compliant?
- What are some common applications of the TL431CDG?
- What is the maximum cathode to anode voltage for the TL431CDG?
- What is the temperature coefficient of the TL431CDG?
