Overview
The TL431BIDBZT is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 family, known for its thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The TL431BIDBZT allows for adjustable output voltage between approximately 2.5V and 36V, set by two external resistors. It is an excellent replacement for Zener diodes in various applications, including on-board regulation, adjustable power supplies, and switching power supplies.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOT-23 (DBZ) |
| Pin Count | 3 |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade) |
| Adjustable Output Voltage Range | 2.5V to 36V |
| Operating Temperature Range | -40°C to 85°C |
| Typical Output Impedance | 0.2Ω |
| Sink-Current Capability | 1mA to 100mA |
| Maximum Input Voltage | 37V |
| Dimensions | 2.92 x 1.3 x 1mm |
Key Features
- Adjustable output voltage from approximately 2.5V to 36V using two external resistors.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability from 1mA to 100mA.
- Operation over a wide temperature range from -40°C to 85°C.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- Sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- On-board voltage regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and military applications due to its thermal stability.
- General-purpose voltage reference applications where precision and adjustability are required.
Q & A
- What is the TL431BIDBZT?
The TL431BIDBZT is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431BIDBZT?
The output voltage can be set to any value between approximately 2.5V and 36V using two external resistors.
- What are the operating temperature ranges for the TL431BIDBZT?
The device operates from -40°C to 85°C.
- What is the typical output impedance of the TL431BIDBZT?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431BIDBZT?
The sink-current capability ranges from 1mA to 100mA.
- What are the dimensions of the TL431BIDBZT package?
The dimensions are 2.92 x 1.3 x 1mm.
- What are the common applications of the TL431BIDBZT?
Common applications include on-board voltage regulation, adjustable power supplies, switching power supplies, and various automotive, commercial, and military applications.
- How does the TL431BIDBZT compare to Zener diodes?
The TL431BIDBZT has a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
- What are the different grades of the TL431 series?
The TL431 series is available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- Is the TL431BIDBZT suitable for high-temperature environments?
