Overview
The TL431CLPRA is a three-terminal programmable shunt regulator diode produced by onsemi. This device is part of the TL431 series, which operates as a low temperature coefficient zener diode that can be programmed to output voltages from 2.5 V to 36 V using two external resistors. It is known for its wide operating current range of 1.0 mA to 100 mA and its low dynamic output impedance, making it an excellent replacement for traditional zener diodes in various applications.
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 | 1.0 | - | 100 |
| Reference Input Current Range | Iref | mA | -0.05 | - | 10 |
| Operating Junction Temperature | TJ | °C | - | - | 150 |
| Operating Ambient Temperature Range | TA | °C | 0 | - | 70 |
| Dynamic Output Impedance | |ZKA| | Ω | 0.22 | - | 0.5 |
| Voltage Reference Tolerance | - | % | - | 0.4 | - |
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.
- Temperature compensated for operation over the full rated operating temperature range.
- Low output noise voltage.
- Pb-free packages available).
- AEC-Q100 qualified for automotive applications (specific models)).
Applications
- Digital voltmeters).
- Power supplies).
- Op-amp circuitry).
- Industrial and automotive systems).
- Shunt voltage regulators, series voltage regulators, and switch adjustment control circuits).
Q & A
- What is the TL431CLPRA and what is its primary function?
The TL431CLPRA is a three-terminal programmable shunt regulator diode that operates as a low temperature coefficient zener diode, providing a stable reference voltage that can be programmed from 2.5 V to 36 V.
- What is the operating current range of the TL431CLPRA?
The TL431CLPRA has an operating current range of 1.0 mA to 100 mA).
- What is the typical dynamic output impedance of the TL431CLPRA?
The typical dynamic output impedance is 0.22 Ω).
- What is the voltage reference tolerance of the TL431CLPRA?
The voltage reference tolerance is typically +/- 0.4% at 25°C for the TL431B series).
- What are the typical applications of the TL431CLPRA?
Typical applications include digital voltmeters, power supplies, op-amp circuitry, and industrial and automotive systems).
- What is the operating temperature range of the TL431CLPRA?
The operating ambient temperature range is typically from 0°C to 70°C, but can vary depending on the specific model).
- Is the TL431CLPRA AEC-Q100 qualified?
Yes, certain models of the TL431 series are AEC-Q100 qualified for automotive applications).
- How is the output voltage of the TL431CLPRA programmed?
The output voltage can be programmed using two external resistors).
- What is the maximum junction temperature of the TL431CLPRA?
The maximum junction temperature is 150°C).
- Are Pb-free packages available for the TL431CLPRA?
Yes, Pb-free packages are available).
