Overview
The TL431CLPRP, produced by onsemi, is a three-terminal programmable shunt regulator diode. This monolithic IC voltage reference operates as a low temperature coefficient zener that is programmable from 2.5 V to 36 V using two external resistors. It is part of the TL431 series, known for its wide operating current range and excellent temperature stability, making it suitable for various applications such as digital voltmeters, power supplies, and op-amp circuitry.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Input Voltage | Vref | V | 2.44 | 2.495 | 2.55 |
| Voltage Reference Tolerance | % | ± 0.4 (TL431B) | |||
| Dynamic Output Impedance | |ZKA| | Ω | 0.22 | 0.5 | |
| Sink Current Range | IK | mA | 1.0 | 100 | |
| Operating Junction Temperature | TJ | °C | 150 | ||
| Operating Ambient Temperature Range | TA | °C | -40 | 85 | |
| Cathode to Anode Voltage | VKA | V | 37 |
Key Features
- Programmable output voltage from 2.5 V to 36 V using two external resistors.
- Low dynamic output impedance of 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 the full rated operating temperature range.
- Low output noise voltage.
- Pb-free packages available.
Applications
- Digital voltmeters.
- Power supplies.
- Op-amp circuitry.
- Shunt voltage regulators.
- Series voltage regulators.
- Switch adjustment control circuits.
- Reference voltage sources in industrial, automotive, and commercial applications.
Q & A
- What is the TL431CLPRP used for?
The TL431CLPRP is used as a programmable shunt regulator diode, suitable for applications such as digital voltmeters, power supplies, and op-amp circuitry.
- How is the output voltage of the TL431CLPRP programmed?
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 TL431CLPRP?
The typical dynamic output impedance is 0.22 Ω.
- What is the sink current range of the TL431CLPRP?
The sink current range is from 1.0 mA to 100 mA.
- What is the operating temperature range of the TL431CLPRP?
The operating ambient temperature range is from -40°C to +85°C.
- Is the TL431CLPRP Pb-free?
- What are some common applications of the TL431CLPRP?
- How does the TL431CLPRP handle temperature variations?
The device is temperature compensated for operation over the full rated operating temperature range, with an equivalent full-range temperature coefficient of 50 ppm/°C typical.
- What is the maximum cathode to anode voltage for the TL431CLPRP?
The maximum cathode to anode voltage is 37 V.
- Can the TL431CLPRP be used in automotive applications?
