Overview
The TL431IDBVT is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its high accuracy and stability. The TL431IDBVT is designed to provide a programmable output voltage range from approximately 2.5 V to 36 V, which can be set using two external resistors. This regulator is widely used in various applications requiring precise voltage regulation and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (Vref) | 2.495 | V |
| Reference Voltage Tolerance | ±2.2% (at 25°C) | % |
| Output Voltage Range | 2.47 V to 36 V | V |
| Output Impedance | 0.2 Ω (typical) | Ω |
| Cathode Current Range | 1 mA to 100 mA | mA |
| Power Dissipation | 950 mW | mW |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | SOT23-5 |
Key Features
- Programmable output voltage up to 36 V, set by two external resistors.
- Reference voltage of approximately 2.5 V with a tolerance of ±2.2% at 25°C.
- Low output impedance of 0.2 Ω (typical).
- Sink-current capability from 1 mA to 100 mA.
- Operating temperature range from -40°C to 85°C.
- Low output noise and sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Applications
- Shunt regulator in various power supply designs.
- Precision current limiter and constant current sink.
- Isolated feedback loop for Switch Mode Power Supplies (SMPS).
- On-board regulation and adjustable power supplies.
- Switching power supplies and other linear applications requiring precise voltage regulation.
Q & A
- What is the reference voltage of the TL431IDBVT?
The reference voltage (Vref) of the TL431IDBVT is approximately 2.495 V.
- What is the output voltage range of the TL431IDBVT?
The output voltage range of the TL431IDBVT can be set between 2.47 V and 36 V using two external resistors.
- What is the typical output impedance of the TL431IDBVT?
The typical output impedance of the TL431IDBVT is 0.2 Ω.
- What is the cathode current range of the TL431IDBVT?
The cathode current range of the TL431IDBVT is from 1 mA to 100 mA.
- What is the operating temperature range of the TL431IDBVT?
The operating temperature range of the TL431IDBVT is from -40°C to 85°C.
- What package type is the TL431IDBVT available in?
The TL431IDBVT is available in the SOT23-5 package type.
- Can the TL431IDBVT replace Zener diodes in some applications?
- What are some common applications of the TL431IDBVT?
- How is the output voltage of the TL431IDBVT set?
The output voltage of the TL431IDBVT is set using two external resistors.
- What is the power dissipation of the TL431IDBVT?
The power dissipation of the TL431IDBVT is 950 mW.
