Overview
The TL431BIDMR2 is a three-terminal adjustable shunt regulator produced by onsemi. This device is part of the TL431 series, known for its thermal stability and wide range of applications. It operates as a programmable precision reference voltage, making it an excellent replacement for Zener diodes in various circuits. The TL431BIDMR2 is characterized by its adjustable output voltage, low output noise, and high stability over a broad temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance (at 25°C) | 0.5% (B grade) | % |
| Adjustable Output Voltage | Vref to 36V | V |
| Operating Temperature Range | −40°C to 125°C | °C |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
| Output Impedance | 0.2Ω (typical) | Ω |
| Sink-Current Capability | 1mA to 100mA | mA |
| Cathode to Anode Voltage | 37V | V |
| Reference Input Current Range | −0.05 to +10 mA | mA |
| Operating Junction Temperature | 150°C | °C |
| Storage Temperature Range | −65 to +150°C | °C |
Key Features
- Programmable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Low dynamic output impedance of 0.22Ω (typical).
- Low output noise.
- High stability over a broad temperature range.
- Sink-current capability from 1mA to 100mA.
- Active output circuitry providing a sharp turn-on characteristic.
- Available in different grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Digital voltmeters.
- Op-amp circuitry.
- Replacing Zener diodes in many applications.
Q & A
- What is the TL431BIDMR2?
The TL431BIDMR2 is a three-terminal adjustable shunt regulator produced by onsemi, used for precision voltage referencing and regulation. - What is the adjustable output voltage range of the TL431BIDMR2?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors. - What are the temperature ranges for the TL431BIDMR2?
The device operates from −40°C to 125°C and can be stored from −65°C to +150°C. - What is the typical output impedance of the TL431BIDMR2?
The typical output impedance is 0.2Ω. - What are the sink-current capabilities of the TL431BIDMR2?
The device can sink current from 1mA to 100mA. - What are some common applications of the TL431BIDMR2?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, digital voltmeters, and op-amp circuitry. - How does the TL431BIDMR2 compare to Zener diodes?
The TL431BIDMR2 is an excellent replacement for Zener diodes due to its adjustable output voltage, low output noise, and high stability over a broad temperature range. - What are the different grades of the TL431 series?
The TL431 series is available in three grades with initial tolerances of 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C. - What is the maximum operating junction temperature of the TL431BIDMR2?
The maximum operating junction temperature is 150°C. - Can the TL431BIDMR2 be used as a positive or negative voltage reference?
Yes, the TL431BIDMR2 can be used as either a positive or negative voltage reference.
