Overview
The TL431BQDBZR, produced by Texas Instruments, is a three-terminal adjustable shunt regulator. This device is part of the TL431 family, known for its adjustable output voltage range between approximately 2.5V and 36V, set by two external resistors. It offers high thermal stability over a wide temperature range, making it suitable for various applications including automotive, commercial, and military environments. The TL431BQDBZR is packaged in a SOT-23 case and is RoHS compliant, ensuring environmental sustainability and regulatory compliance.
Key Specifications
| Attribute | Value |
|---|---|
| Case/Package | SOT-23 |
| Number of Pins | 3 |
| Mount | Surface Mount |
| Max Output Current | 100mA |
| Min Input Voltage | 2.495V |
| Max Input Voltage | 37V |
| Max Output Voltage | 36V |
| Tolerance | 0.5% |
| Temperature Coefficient | 34ppm/°C |
| Cathode Current | 700µA |
| Lifecycle Status | Production |
| Max Operating Temperature | 125°C |
| Min Operating Temperature | -40°C |
| Number of Channels | 1 |
| Output Voltage | 2.5V |
| Packaging | Tape & Reel |
| Reference Type | Adjustable |
| Reference Voltage | 36V |
Key Features
- Programmable output voltage up to 36V using two external resistors.
- Three different reference voltage tolerances: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability: 1mA to 100mA.
- AEC-Q100 qualified (grade 1) for automotive applications.
- Enhanced stability area with very low load capacity requirement.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- Shunt regulator.
- Precision current limiter.
- Precision constant current sink.
- Isolated feedback loop for Switch Mode Power Supply (SMPS) applications.
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
Q & A
- What is the TL431BQDBZR? The TL431BQDBZR is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the output voltage range of the TL431BQDBZR? The output voltage can be set between approximately 2.5V and 36V using two external resistors.
- What are the temperature tolerances available for the TL431BQDBZR? The device is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- What is the maximum output current of the TL431BQDBZR? The maximum output current is 100mA.
- What is the operating temperature range of the TL431BQDBZR? The device operates from -40°C to 125°C.
- Is the TL431BQDBZR RoHS compliant? Yes, the TL431BQDBZR is RoHS compliant.
- What are some common applications of the TL431BQDBZR? Common applications include shunt regulation, precision current limiting, and isolated feedback loops in SMPS.
- What is the typical output impedance of the TL431BQDBZR? The typical output impedance is 0.2Ω.
- Is the TL431BQDBZR AEC-Q100 qualified? Yes, the TL431BQDBZR is AEC-Q100 qualified (grade 1) for automotive applications.
- What is the packaging type of the TL431BQDBZR? The device is packaged in a SOT-23 case and is available in tape and reel packaging.
