Overview
The TL431 series from Texas Instruments, including variants like the TL431BQDBZR, are three-terminal adjustable shunt regulators known for their high precision and stability. These devices are designed to provide a programmable output voltage range from approximately 2.5V to 36V, set by two external resistors. They are widely used in various applications requiring precise voltage regulation.
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% (B grade), 1% (A grade), 2% (Standard grade) |
| 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 Current | 100mA |
| Output Voltage | 2.5V to 36V |
| Packaging | Tape & Reel |
| Reference Type | Adjustable |
| Reference Voltage | 2.495V to 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).
- Typical temperature drift of 6mV (from 0°C to 70°C).
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- AEC-Q100 qualified (grade 1) for automotive applications.
- Operation from -40°C to 125°C.
Applications
- Shunt regulator.
- Precision current limiter.
- Precision constant current sink.
- Isolated feedback loop for Switch Mode Power Supplies (SMPS).
- On-board regulation and adjustable power supplies.
Q & A
- What is the TL431 series used for?
The TL431 series is used as adjustable shunt regulators, providing precise voltage regulation in various applications.
- What is the output voltage range of the TL431BQDBZR?
The output voltage range is from approximately 2.5V to 36V, set by two external resistors.
- What are the different tolerance grades available for the TL431 series?
The TL431 series is available in three tolerance grades: 0.5% (B grade), 1% (A grade), and 2% (Standard grade).
- What is the typical temperature drift of the TL431BQDBZR?
The typical temperature drift is 6mV from 0°C to 70°C.
- What is the sink-current capability of the TL431BQDBZR?
The sink-current capability ranges from 1mA to 100mA.
- Is the TL431BQDBZR AEC-Q100 qualified?
- What is the operating temperature range of the TL431BQDBZR?
The operating temperature range is from -40°C to 125°C.
- What package types are available for the TL431BQDBZR?
The TL431BQDBZR is available in SOT-23 packages.
- What are some common applications of the TL431BQDBZR?
- Is the TL431BQDBZR RoHS compliant?
