Overview
The TL431AIDBZR is a three-terminal adjustable precision shunt regulator produced by Texas Instruments, although it is also distributed and supported by other manufacturers like Nexperia. This component is part of the TL431 family, known for its high accuracy and thermal stability. It is designed to provide a programmable output voltage range from approximately 2.5V to 36V, set by two external resistors, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (Vref) | 2.495 | V |
| Reference Voltage Tolerance | ±1% | % |
| Output Voltage Range | 2.47 V to 36 V | V |
| Output Impedance | 0.2 Ω | Ω |
| Cathode Current (IK) | 1 mA to 100 mA | mA |
| Power Dissipation | 950 mW | mW |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | SOT-23 (SC-59, TO-236) | |
| Mounting Method | Surface Mount |
Key Features
- Programmable Output Voltage: The output voltage can be set between approximately 2.5V and 36V using two external resistors, making it highly versatile for various applications.
- High Accuracy: The TL431AIDBZR has a reference voltage tolerance of ±1%, ensuring high precision in voltage regulation.
- Low Output Impedance: With a typical output impedance of 0.2Ω, this regulator provides stable voltage regulation.
- Wide Operating Temperature Range: It operates from -40°C to +85°C, making it suitable for industrial and automotive applications.
- Low Output Noise: The device is characterized by low output noise, which is crucial for sensitive electronic circuits.
- Current Sinking Capability: It can sink currents from 1 mA to 100 mA, making it suitable for a variety of load conditions.
Applications
- Shunt Regulator: Used as a precision shunt regulator in various power supply applications.
- Precision Current Limiter: Can be used to limit current in precision applications.
- Precision Constant Current Sink: Provides a stable current sink for various electronic circuits.
- Isolated Feedback Loop for SMPS: Used in isolated feedback loops for Switch Mode Power Supplies (SMPS).
- Industrial AC/DC Power Supplies: Suitable for power conversion applications in industrial environments.
- AC Inverters and Variable Frequency Drives: Provides a stable reference voltage in inverters and VF drives.
- Servo Drive Control Modules: Used as a voltage reference in servo systems to ensure precise control.
- Automotive Electronics: Used for voltage regulation and reference in automotive electronic systems, such as battery management systems and in-car entertainment systems.
Q & A
- What is the reference voltage of the TL431AIDBZR?
The reference voltage (Vref) of the TL431AIDBZR is approximately 2.495 V.
- What is the output voltage range of the TL431AIDBZR?
The output voltage can be set between approximately 2.47 V and 36 V using two external resistors.
- What is the typical output impedance of the TL431AIDBZR?
The typical output impedance is 0.2 Ω.
- What is the operating temperature range of the TL431AIDBZR?
The operating temperature range is -40°C to +85°C.
- What is the package type of the TL431AIDBZR?
The package type is SOT-23 (SC-59, TO-236).
- What are the typical applications of the TL431AIDBZR?
Typical applications include shunt regulators, precision current limiters, precision constant current sinks, isolated feedback loops for SMPS, industrial AC/DC power supplies, AC inverters, and automotive electronics.
- Can the TL431AIDBZR replace Zener diodes in some applications?
Yes, the TL431AIDBZR can replace Zener diodes in many applications due to its sharp turn-on characteristic and adjustable output voltage.
- What is the power dissipation capability of the TL431AIDBZR?
The power dissipation capability is 950 mW.
- What is the cathode current range of the TL431AIDBZR?
The cathode current range is from 1 mA to 100 mA.
- Is the TL431AIDBZR RoHS compliant?
Yes, the TL431AIDBZR is RoHS compliant and lead-free.
