Overview
The TL431BIPG, part of the TL431 series from onsemi, is a three-terminal programmable shunt regulator diode. 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 offer a stable voltage reference with a wide operating current range of 1.0 mA to 100 mA and a typical dynamic impedance of 0.22 Ω. This device is particularly useful in applications requiring precise voltage regulation, such as digital voltmeters, power supplies, and op-amp circuitry.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Cathode to Anode Voltage | VKA | Vref | - | 36 | V |
| Cathode Current Range, Continuous | IK | 1.0 | - | 100 | mA |
| Reference Input Current Range, Continuous | Iref | -0.05 | - | 10 | mA |
| Operating Junction Temperature | TJ | - | - | 150 | °C |
| Operating Ambient Temperature Range | TA | -40 | - | 85 | °C |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
| Voltage Reference Tolerance | - | - | ±0.4% | - | % @ 25°C |
| Dynamic Output Impedance | - | 0.22 | - | - | Ω |
| Temperature Coefficient | - | 50 | - | - | ppm/°C |
Key Features
- Programmable Output Voltage to 36 V using two external resistors.
- Voltage Reference Tolerance: ±0.4% typical at 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
The TL431BIPG is versatile and can be used in various applications, including:
- Digital voltmeters: Providing a stable reference voltage for precise measurements.
- Power supplies: Used in feedback control and voltage regulation circuits.
- Op-amp circuitry: Serving as a stable reference voltage in operational amplifier circuits.
- Feedback control for driving optocouplers in power supplies.
Q & A
- What is the TL431BIPG?
The TL431BIPG is a three-terminal programmable shunt regulator diode from onsemi, used as a low temperature coefficient zener diode that can be programmed from 2.5 V to 36 V.
- What is the operating current range of the TL431BIPG?
The TL431BIPG operates with a current range of 1.0 mA to 100 mA).
- What is the typical dynamic impedance of the TL431BIPG?
The typical dynamic impedance is 0.22 Ω).
- What is the voltage reference tolerance of the TL431BIPG at 25°C?
The voltage reference tolerance is ±0.4% typical at 25°C).
- What is the temperature coefficient of the TL431BIPG?
The equivalent full-range temperature coefficient is 50 ppm/°C typical).
- Is the TL431BIPG temperature compensated?
Yes, it is temperature compensated for operation over the full rated operating temperature range).
- What are the typical applications of the TL431BIPG?
Typical applications include digital voltmeters, power supplies, and op-amp circuitry).
- Is the TL431BIPG available in Pb-Free packages?
Yes, Pb-Free packages are available for the TL431BIPG).
- What is the operating ambient temperature range of the TL431BIPG?
The operating ambient temperature range is -40°C to 85°C).
- What is the storage temperature range of the TL431BIPG?
The storage temperature range is -65°C to 150°C).
