Overview
The TL431BVDG 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 (2.5 V) up 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 low dynamic output impedance of 0.22 Ω typical. The TL431BVDG is suitable for various applications, including digital voltmeters, power supplies, and op-amp circuitry, making it an excellent replacement for traditional zener diodes.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Reference Input Voltage | Vref | 2.44 - 2.495 - 2.55 | V |
| Voltage Reference Tolerance | ±0.4% @ 25°C | % | |
| Dynamic Output Impedance | |ZKA| | 0.22 Ω typical | Ω |
| Sink Current Capability | IK | 1.0 mA to 100 mA | mA |
| Temperature Coefficient | 50 ppm/°C typical | ppm/°C | |
| Operating Junction Temperature | TJ | -40°C to 125°C | °C |
| Cathode to Anode Voltage | VKA | 37 V | V |
Key Features
- Programmable Output Voltage to 36 V
- Voltage Reference Tolerance: ±0.4% @ 25°C (TL431B)
- Low Dynamic Output Impedance, 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 Full Rated Operating Temperature Range
- Low Output Noise Voltage
- Pb-Free Packages are Available
Applications
- Digital Voltmeters
- Power Supplies
- Op-Amp Circuitry
- Replacement for Zener Diodes in Various Circuits
Q & A
- What is the TL431BVDG used for?
The TL431BVDG is used as a programmable shunt regulator diode, suitable for applications such as digital voltmeters, power supplies, and op-amp circuitry.
- What is the programmable output voltage range of the TL431BVDG?
The TL431BVDG can be programmed to output voltages from the reference voltage (2.5 V) up to 36 V.
- What is the typical dynamic output impedance of the TL431BVDG?
The typical dynamic output impedance is 0.22 Ω.
- What is the operating current range of the TL431BVDG?
The operating current range is from 1.0 mA to 100 mA.
- What is the temperature coefficient of the TL431BVDG?
The equivalent full-range temperature coefficient is 50 ppm/°C typical.
- What are the operating temperature ranges for the TL431BVDG?
The operating junction temperature range is -40°C to 125°C.
- Is the TL431BVDG available in Pb-Free packages?
- What is the maximum cathode to anode voltage for the TL431BVDG?
The maximum cathode to anode voltage is 37 V.
- Can the TL431BVDG be used as a replacement for zener diodes?
- How does the TL431BVDG handle noise?
The TL431BVDG features low output noise voltage.
