Overview
The TL431IDBZRG4 is a precision programmable shunt voltage reference produced by Texas Instruments. It is part of the TL431 series, which includes three-terminal adjustable shunt regulators known for their thermal stability across automotive, commercial, and military temperature ranges. The device allows for adjustable output voltage between approximately 2.5V and 36V using two external resistors, making it versatile for various precision voltage regulation applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | |
| Pins | 3 | |
| Operating Temperature Range | -40 to 125 | °C |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | |
| Adjustable Output Voltage | Vref to 36V | |
| Typical Output Impedance | 0.2Ω | |
| Sink-Current Capability | 1mA to 100mA | |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) |
Key Features
- Adjustable output voltage from approximately 2.5V to 36V using two external resistors.
- Low dynamic output impedance of 0.2Ω.
- Operation from -40°C to 125°C, ensuring stability across a wide temperature range.
- Low output noise and sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Sink-current capability ranging from 1mA to 100mA.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
Applications
- Precision voltage regulation in various electronic systems.
- Battery management systems.
- Switching power supplies.
- On-board regulation.
- Adjustable power supplies.
- Rack server power, industrial AC/DC, AC inverter & VF drives, and servo drive control modules.
- Notebook PC power adapter designs.
Q & A
- Q: What is the typical output voltage of the TL431IDBZRG4?
A: The TL431IDBZRG4 provides a typical output voltage of approximately 2.495V, which can be adjusted using external resistors. - Q: What are the typical applications of the TL431IDBZRG4?
A: The TL431IDBZRG4 is commonly used in precision voltage regulation, battery management systems, and switching power supplies. - Q: What is the operating temperature range of the TL431IDBZRG4?
A: The TL431IDBZRG4 operates from -40°C to 125°C. - Q: What is the typical output impedance of the TL431IDBZRG4?
A: The typical output impedance is 0.2Ω. - Q: What is the sink-current capability of the TL431IDBZRG4?
A: The sink-current capability ranges from 1mA to 100mA. - Q: How can the output voltage of the TL431IDBZRG4 be adjusted?
A: The output voltage can be adjusted using two external resistors. - Q: What are the different grades of the TL431IDBZRG4 based on reference voltage tolerance?
A: The TL431IDBZRG4 is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C. - Q: Is the TL431IDBZRG4 suitable for replacing Zener diodes?
A: Yes, the TL431IDBZRG4 is an excellent replacement for Zener diodes due to its sharp turn-on characteristic and low output noise. - Q: What is the package type of the TL431IDBZRG4?
A: The TL431IDBZRG4 is packaged in a SOT-23 (DBZ) package with 3 pins. - Q: Where can I find detailed technical specifications for the TL431IDBZRG4?
A: Detailed technical specifications can be found in the TL431IDBZRG4 datasheet available on the Texas Instruments website.
