Overview
The TL431BVP, produced by onsemi, is a three-terminal programmable shunt regulator diode. This monolithic IC voltage reference operates as a low temperature coefficient zener, which can be programmed from 2.5 V to 36 V using two external resistors. It is designed to provide a stable voltage reference and can be used as either a positive or negative voltage reference due to its shunt regulator operation. The device is particularly useful in applications requiring a wide operating current range and high temperature stability.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Input Voltage | Vref | V | 2.44 | 2.495 | 2.55 |
| Cathode to Anode Voltage | VKA | V | - | - | 37 |
| Cathode Current Range | IK | mA | -100 | - | 150 |
| Reference Input Current Range | Iref | mA | -0.05 | - | 10 |
| Operating Junction Temperature | TJ | °C | - | - | 150 |
| Operating Ambient Temperature Range | TA | °C | -40 | - | 125 |
| Dynamic Output Impedance | |ZKA| | Ω | - | 0.22 | 0.5 |
Key Features
- Programmable Output Voltage to 36 V
- Voltage Reference Tolerance: ±0.4%, Typ @ 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
- AEC-Q100 qualified for automotive applications
Applications
- Power Supplies
- Digital Voltmeters
- Op Amp Circuitry
- Industrial Applications
- Automotive Applications
Q & A
- What is the TL431BVP used for?
The TL431BVP is used as a programmable shunt voltage reference, often replacing zener diodes in various applications such as power supplies, digital voltmeters, and op amp circuitry.
- What is the programmable output voltage range of the TL431BVP?
The output voltage can be programmed from 2.5 V to 36 V using two external resistors.
- What is the typical dynamic output impedance of the TL431BVP?
The typical dynamic output impedance is 0.22 Ω.
- What is the sink current capability of the TL431BVP?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating ambient temperature range for the TL431BVP?
The operating ambient temperature range is from -40°C to +125°C.
- Is the TL431BVP AEC-Q100 qualified?
- What is the reference input voltage tolerance for the TL431BVP?
The reference input voltage tolerance is ±0.4% at 25°C for the TL431B version.
- Can the TL431BVP be used as a positive or negative voltage reference?
- What is the maximum operating junction temperature for the TL431BVP?
The maximum operating junction temperature is 150°C.
- Are Pb-Free packages available for the TL431BVP?
