Overview
The TL431BIDBZTG4 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 various temperature ranges. This device is packaged in a SOT-23 (DBZ) package with 3 pins and operates from -40°C to 125°C, making it suitable for automotive, commercial, and military applications.
The TL431BIDBZTG4 allows for adjustable output voltage settings between the reference voltage (approximately 2.5V) and 36V using two external resistors. It features active output circuitry with a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | - |
| Pins | 3 | - |
| Operating Temperature Range | -40 to 125°C | °C |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | 2.495V to 36V | V |
| Sink-Current Capability | 1mA to 100mA | mA |
| Typical Output Impedance | 0.2Ω | Ω |
| Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
Key Features
- Adjustable output voltage from reference voltage (approximately 2.5V) to 36V using two external resistors.
- Operation from -40°C to 125°C, ensuring stability across a wide temperature range.
- Low dynamic output impedance of 0.2Ω.
- Sink-current capability ranging from 1mA to 100mA.
- Low output noise and 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.
Applications
- Precision voltage regulation in various electronic systems.
- On-board regulation and adjustable power supplies.
- Switching power supplies and servo drive control modules.
- Rack server power, industrial AC/DC, and AC inverter & VF drives.
- Notebook PC power adapter designs.
Q & A
- Q: What is the typical output voltage of the TL431BIDBZTG4?
A: The TL431BIDBZTG4 provides a typical output voltage of 2.495V, which can be adjusted as per the application's requirements using external resistors.
- Q: What are the typical applications of the TL431BIDBZTG4?
A: The TL431BIDBZTG4 is commonly used in precision voltage regulation, on-board regulation, adjustable power supplies, and switching power supplies.
- Q: What is the operating temperature range of the TL431BIDBZTG4?
A: The TL431BIDBZTG4 operates from -40°C to 125°C.
- Q: How is the output voltage of the TL431BIDBZTG4 adjusted?
A: The output voltage can be adjusted using two external resistors.
- Q: What are the initial tolerance grades available for the TL431BIDBZTG4?
A: The TL431BIDBZTG4 is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- Q: What is the typical output impedance of the TL431BIDBZTG4?
A: The typical output impedance is 0.2Ω.
- Q: What is the sink-current capability of the TL431BIDBZTG4?
A: The sink-current capability ranges from 1mA to 100mA.
- Q: Can the TL431BIDBZTG4 replace Zener diodes in some applications?
A: Yes, the TL431BIDBZTG4 can replace Zener diodes due to its sharp turn-on characteristic and low output noise.
- Q: What package type is the TL431BIDBZTG4 available in?
A: The TL431BIDBZTG4 is packaged in a SOT-23 (DBZ) package with 3 pins.
- Q: What are some of the key advantages of using the TL431BIDBZTG4?
A: Key advantages include adjustable output voltage, low output impedance, low output noise, and a wide operating temperature range.
