Overview
The TL431AQDBVR is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its high precision and thermal stability. It can produce and maintain a precise DC voltage, making it suitable for various power management applications. The TL431AQDBVR operates with an output voltage range between 2.495 V and 36 V, which can be set using two external resistors. This component is particularly useful in applications requiring stable voltage references, such as onboard regulation, adjustable power supplies, and switching power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Shunt Type | Shunt | |
| Output Type | Adjustable | |
| Reference Voltage | 2.495 V | V |
| Output Voltage Range | 2.495 V to 36 V | V |
| Accuracy | ±1% | |
| Output Impedance | 0.2 Ω (Typical) | Ω |
| Cathode Current | 0.6 mA (Minimum) | mA |
| Maximum Output Current | 100 mA | mA |
| Power Dissipation | 950 mW | mW |
| Operating Temperature Range | -40 °C to 125 °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 to any value between 2.495 V and 36 V using two external resistors.
- High Precision: The device has a reference voltage tolerance of ±1% and a low output drift versus temperature, ensuring good stability over the entire temperature range.
- Low Output Impedance: Typical output impedance of 0.2 Ω, which is beneficial for maintaining stable voltage outputs.
- High Current Capability: The TL431AQDBVR can sink currents up to 100 mA.
- Wide Operating Temperature Range: Operates from -40 °C to 125 °C, making it suitable for various environmental conditions).
- Green Product: Free from Sb/Br, making it an environmentally friendly option).
Applications
- Shunt Regulator: Used as a precision shunt regulator in various power management circuits).
- Precision Current Limiter: Can be used as a precision current limiter due to its adjustable output voltage and high current sinking capability).
- Precision Constant Current Sink: Suitable for applications requiring a stable current sink).
- Isolated Feedback Loop for SMPS: Used in isolated feedback loops for Switch Mode Power Supplies (SMPS)).
- Power Management: Ideal for onboard regulation, adjustable power supplies, and switching power supplies).
- Automotive, Aerospace, Defence, Military, and Commercial Applications: Due to its wide operating temperature range and high precision, it is suitable for various industrial and military applications).
Q & A
- What is the reference voltage of the TL431AQDBVR?
The reference voltage of the TL431AQDBVR is approximately 2.495 V.
- What is the output voltage range of the TL431AQDBVR?
The output voltage range is from 2.495 V to 36 V, set by two external resistors.
- What is the accuracy of the TL431AQDBVR?
The accuracy is ±1%.
- What is the typical output impedance of the TL431AQDBVR?
The typical output impedance is 0.2 Ω.
- What is the maximum output current of the TL431AQDBVR?
The maximum output current is 100 mA.
- What is the operating temperature range of the TL431AQDBVR?
The operating temperature range is from -40 °C to 125 °C.
- What package type is the TL431AQDBVR available in?
The TL431AQDBVR is available in the SOT-23 (SC-59, TO-236) package.
- How is the TL431AQDBVR mounted?
The TL431AQDBVR is surface-mounted.
- What are some common applications of the TL431AQDBVR?
Common applications include shunt regulation, precision current limiting, precision constant current sinking, and isolated feedback loops for SMPS, as well as various power management and industrial applications.
- Is the TL431AQDBVR environmentally friendly?
Yes, the TL431AQDBVR is free from Sb/Br, making it an environmentally friendly option.
