Overview
The TL431ACDCKR is an adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its thermal stability and versatility in various applications. The TL431ACDCKR allows for the output voltage to be set to any value between the reference voltage (approximately 2.5V) and 36V using two external resistors. It is widely used as a replacement for Zener diodes in applications such as on-board regulation, adjustable power supplies, and switching power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 1% (A 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 |
| Package Type | SC70 (SOT-23) | - |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Active output circuitry providing a very sharp turn-on characteristic.
- Low output drift versus temperature, ensuring good stability over the entire temperature range.
- Green product with no Sb/Br.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Power management in automotive, aerospace, defense, military, and commercial sectors.
Q & A
- What is the TL431ACDCKR used for?
The TL431ACDCKR is used as an adjustable precision shunt regulator, often replacing Zener diodes in various applications such as on-board regulation, adjustable power supplies, and switching power supplies.
- What is the adjustable output voltage range of the TL431ACDCKR?
The output voltage can be set to any value between the reference voltage (approximately 2.5V) and 36V using two external resistors.
- What is the operating temperature range of the TL431ACDCKR?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431ACDCKR?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431ACDCKR?
The sink-current capability ranges from 1mA to 100mA.
- What package type does the TL431ACDCKR come in?
The TL431ACDCKR comes in an SC70 (SOT-23) package.
- Is the TL431ACDCKR a green product?
- What are some common applications of the TL431ACDCKR?
- How does the TL431ACDCKR compare to Zener diodes?
The TL431ACDCKR provides a very sharp turn-on characteristic and better thermal stability, making it an excellent replacement for Zener diodes in many applications.
- What is the reference voltage tolerance of the TL431ACDCKR at 25°C?
The reference voltage tolerance at 25°C is 1% for the A grade.
