Overview
The TL431IDBVTG4 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 and TL432 family of three-terminal adjustable shunt regulators. These devices are known for their thermal stability across various temperature ranges, making them suitable for automotive, commercial, and military applications.
The TL431IDBVTG4 offers adjustable output voltage, low output noise, and a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications. The device is available in different grades with varying initial tolerances, ensuring good stability over the entire temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Reference Voltage Tolerance at 25°C | - | - | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref (approx. 2.5V) | - | 36V | V |
| Operating Temperature Range | -40°C | - | 125°C | °C |
| Typical Temperature Drift | - | 6 mV (C temp), 14 mV (I temp, Q temp) | - | mV |
| Output Impedance | - | 0.2 Ω | - | Ω |
| Sink-Current Capability | 1 mA | - | 100 mA | mA |
| Operating Junction Temperature Range | - | - | 150 °C | °C |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- Operation from -40°C to 125°C, ensuring thermal stability across various temperature ranges.
Applications
- Rack server power supplies.
- Industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
- On-board regulation and adjustable power supplies.
- Switching power supplies.
Q & A
- What is the TL431IDBVTG4? The TL431IDBVTG4 is a precision programmable reference voltage regulator produced by Texas Instruments.
- What are the key features of the TL431IDBVTG4? It includes adjustable output voltage, low output noise, sharp turn-on characteristic, and sink-current capability from 1 mA to 100 mA.
- What is the operating temperature range of the TL431IDBVTG4? The device operates from -40°C to 125°C.
- How is the output voltage adjusted? The output voltage can be adjusted using two external resistors to any value between Vref (approximately 2.5V) and 36V.
- What are the typical applications of the TL431IDBVTG4? It is used in rack server power supplies, industrial AC/DC power supplies, AC inverters, servo drive control modules, and notebook PC power adapter designs.
- What is the typical output impedance of the TL431IDBVTG4? The typical output impedance is 0.2 Ω.
- What are the different grades of the TL431IDBVTG4? The device is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- How does the TL431IDBVTG4 compare to Zener diodes? It has a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What is the sink-current capability of the TL431IDBVTG4? The sink-current capability ranges from 1 mA to 100 mA.
- Where can I find more detailed specifications and documentation for the TL431IDBVTG4? Detailed specifications and documentation can be found on the Texas Instruments website and through datasheets available from various electronics suppliers.
