Overview
The TL431CDR2G is a three-terminal programmable shunt regulator diode produced by onsemi. This device is part of the TL431 series and is known for its versatility and precision in voltage regulation. It 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. The TL431CDR2G is suitable for a wide range of applications due to its stable reference voltage and low dynamic output impedance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Programmable Output Voltage | 2.5 V to 36 V | V |
| Voltage Reference Tolerance | ±2.2% (Typical at 25°C) | % |
| Dynamic Output Impedance | 0.22 Ω (Typical) | Ω |
| Sink Current Capability | 1.0 mA to 100 mA | mA |
| Temperature Coefficient | 50 ppm/°C (Typical) | ppm/°C |
| Operating Junction Temperature | -40°C to 125°C | °C |
| Package Type | SOIC-8 | - |
| Thermal Resistance, Junction-to-Ambient | 114 °C/W | °C/W |
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.
- Replacement for zener diodes in various applications.
- Any circuit requiring a stable and adjustable voltage reference.
Q & A
- What is the programmable output voltage range of the TL431CDR2G?
The TL431CDR2G can be programmed to output voltages from 2.5 V to 36 V using two external resistors.
- What is the typical voltage reference tolerance of the TL431CDR2G at 25°C?
The typical voltage reference tolerance is ±2.2% at 25°C.
- What is the dynamic output impedance of the TL431CDR2G?
The dynamic output impedance is 0.22 Ω (typical).
- What is the sink current capability of the TL431CDR2G?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the temperature coefficient of the TL431CDR2G?
The equivalent full-range temperature coefficient is 50 ppm/°C (typical).
- What is the operating junction temperature range of the TL431CDR2G?
The operating junction temperature range is -40°C to 125°C.
- What package types are available for the TL431CDR2G?
The TL431CDR2G is available in SOIC-8 packages.
- Is the TL431CDR2G Pb-free?
- What are some common applications of the TL431CDR2G?
- How does the TL431CDR2G compare to traditional zener diodes?
The TL431CDR2G offers better stability, lower noise, and a wider operating current range compared to traditional zener diodes.
