Overview
The TL431AIDBZRG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its precision and versatility in various electronic applications. The TL431AIDBZRG4 offers adjustable output voltage, high thermal stability, and low output noise, making it an excellent choice for on-board regulation, adjustable power supplies, and switching power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref to 36V | V |
| Operating Temperature Range | -40°C to 125°C | °C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package | SOT23 (DBZ) | - |
| Lead Finish | Cu NIPDAU | - |
Key Features
- Adjustable output voltage between Vref (approximately 2.5V) and 36V using two external resistors.
- High thermal stability over a wide temperature range (-40°C to 125°C).
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- AEC-Q100 qualified (grade 1) for automotive applications.
- Low output drift versus temperature, ensuring good stability.
- Active output circuitry with a sharp turn-on characteristic, making it a suitable replacement for Zener diodes.
Applications
- On-board regulation and voltage referencing.
- Adjustable power supplies and switching power supplies.
- Rack server power and industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules and notebook PC power adapter designs.
- Automotive, industrial, and consumer electronics.
Q & A
- What is the TL431AIDBZRG4?
The TL431AIDBZRG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431AIDBZRG4?
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 TL431AIDBZRG4?
The device operates from -40°C to 125°C.
- What is the typical output impedance of the TL431AIDBZRG4?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431AIDBZRG4?
The sink-current capability ranges from 1 mA to 100 mA.
- Is the TL431AIDBZRG4 AEC-Q100 qualified?
- What are some common applications of the TL431AIDBZRG4?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, and various industrial and automotive applications.
- What is the package type of the TL431AIDBZRG4?
The device is packaged in a SOT23 (DBZ) package.
- What is the lead finish of the TL431AIDBZRG4?
The lead finish is Cu NIPDAU.
- How does the TL431AIDBZRG4 compare to Zener diodes?
The TL431AIDBZRG4 has a sharp turn-on characteristic and low output noise, making it a suitable replacement for Zener diodes in many applications.
