Overview
The TL431BVPG, produced by onsemi, is a three-terminal programmable shunt regulator diode. This device is part of the TL431 series and is known for its high precision and adjustable output voltage. It operates as a low temperature coefficient zener diode, making it an excellent replacement for traditional zener diodes in various applications. The TL431BVPG can be programmed to output voltages between approximately 2.5 V and 36 V using two external resistors, making it highly versatile for different circuit designs.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reference Input Voltage | Vref | 2.44 | 2.495 | 2.55 | V |
| Cathode to Anode Voltage | VKA | Vref | 36 | V | |
| Cathode Current | IK | 1.0 | 100 | mA | |
| Dynamic Impedance | |ZKA| | 0.22 | 0.5 | Ω | |
| Operating Junction Temperature | TJ | 150 | °C | ||
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | |
| Reference Voltage Tolerance at 25°C | ±0.5% (B grade) | % |
Key Features
- Programmable Output Voltage: Adjustable from approximately 2.5 V to 36 V using two external resistors.
- Low Dynamic Output Impedance: Typical dynamic impedance of 0.22 Ω.
- Sink Current Capability: Operates with a current range of 1.0 mA to 100 mA.
- Low Output Noise: Ensures stable and quiet operation.
- Wide Operating Temperature Range: From -40°C to 125°C, making it suitable for various environmental conditions.
- High Stability Over Temperature: Low output drift versus temperature, ensuring good stability across the entire temperature range.
Applications
- Digital Voltmeters: Provides a stable reference voltage for precise measurements.
- Power Supplies: Used in adjustable and switching power supplies for voltage regulation.
- Op Amp Circuitry: Serves as a stable reference voltage in operational amplifier circuits.
- Rack Server Power and Industrial AC/DC Systems: Suitable for high-reliability applications in server power and industrial power systems.
- Notebook PC Power Adapters and Servo Drive Control Modules: Used in various power adapter designs and servo drive control modules).
Q & A
- What is the TL431BVPG?
The TL431BVPG is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the adjustable output voltage range of the TL431BVPG?
The output voltage can be adjusted from approximately 2.5 V to 36 V using two external resistors.
- What is the typical dynamic impedance of the TL431BVPG?
The typical dynamic impedance is 0.22 Ω.
- What is the operating current range of the TL431BVPG?
The device operates with a current range of 1.0 mA to 100 mA.
- What is the operating temperature range of the TL431BVPG?
The device operates from -40°C to 125°C.
- What are some common applications of the TL431BVPG?
Common applications include digital voltmeters, power supplies, op amp circuitry, rack server power, and industrial AC/DC systems.
- How does the TL431BVPG compare to traditional zener diodes?
The TL431BVPG offers higher precision and adjustability, making it an excellent replacement for traditional zener diodes in many applications.
- What is the reference voltage tolerance at 25°C for the TL431BVPG?
The reference voltage tolerance at 25°C is ±0.5% for the B grade.
- Does the TL431BVPG have low output noise?
Yes, the device is designed to have low output noise, ensuring stable operation.
- What is the thermal stability of the TL431BVPG?
The device exhibits low output drift versus temperature, ensuring good stability over the entire temperature range.
