Overview
The TL431BCLPRAG is a three-terminal programmable shunt regulator diode produced by onsemi. This monolithic IC voltage reference operates as a low temperature coefficient zener, which can be programmed from a reference voltage (approximately 2.5V) to 36V using two external resistors. It is designed to offer a wide operating current range of 1.0 mA to 100 mA and features a typical dynamic impedance of 0.22 Ω. The device is temperature compensated for operation over its full rated operating temperature range and is known for its low output noise voltage and sharp turn-on characteristic, making it an excellent replacement for zener diodes in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Programmable Output Voltage | Vref to 36 V | V |
| Voltage Reference Tolerance (Typ @ 25°C) | +/- 0.4% (B grade) | % |
| Dynamic Output Impedance (Typical) | 0.22 Ω | Ω |
| Sink Current Capability | 1.0 mA to 100 mA | mA |
| Equivalent Full-Range Temperature Coefficient (Typical) | 50 ppm/°C | ppm/°C |
| Operating Temperature Range | -40°C to 125°C (Q grade) | °C |
| Package Type | TO-92 | - |
| Thermal Resistance, Junction-to-Ambient | 178 °C/W (TO-92 package) | °C/W |
Key Features
- Programmable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Low dynamic output impedance of 0.22 Ω typical.
- Sink current capability of 1.0 mA to 100 mA.
- Low output noise voltage.
- Temperature compensated for operation over the full rated operating temperature range.
- Sharp turn-on characteristic, making it an excellent replacement for zener diodes.
- Pb-free packages available.
Applications
- Digital voltmeters.
- Power supplies.
- Op amp circuitry.
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
Q & A
- What is the TL431BCLPRAG?
The TL431BCLPRAG is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431BCLPRAG?
The output voltage can be programmed from Vref (approximately 2.5V) to 36V using two external resistors.
- What is the voltage reference tolerance of the TL431BCLPRAG at 25°C?
The voltage reference tolerance is +/- 0.4% for the B grade.
- What is the typical dynamic output impedance of the TL431BCLPRAG?
The typical dynamic output impedance is 0.22 Ω.
- What is the sink current capability of the TL431BCLPRAG?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the operating temperature range of the TL431BCLPRAG?
The device operates from -40°C to 125°C (Q grade).
- What package type is the TL431BCLPRAG available in?
The TL431BCLPRAG is available in the TO-92 package.
- What are some common applications of the TL431BCLPRAG?
Common applications include digital voltmeters, power supplies, op amp circuitry, on-board regulation, adjustable power supplies, and switching power supplies.
- Is the TL431BCLPRAG Pb-free?
- What is the thermal resistance of the TL431BCLPRAG in the TO-92 package?
The thermal resistance, junction-to-ambient, is 178 °C/W for the TO-92 package.
