Overview
The TL431BQLPE3 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 series, which includes adjustable shunt regulators known for their thermal stability and versatility. The TL431BQLPE3 operates over a wide temperature range from −40°C to 125°C, making it suitable for various applications, including automotive, commercial, and military environments.
Key Specifications
| Specification | Value |
|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B Grade), 1% (A Grade), 2% (Standard Grade) |
| Adjustable Output Voltage | Vref (approximately 2.5V) to 36V |
| Operating Temperature Range | −40°C to 125°C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) |
| Output Impedance | 0.2Ω (typical) |
| Sink-Current Capability | 1 mA to 100 mA |
| Package Type | TO-92 (LP) |
Key Features
- Three-terminal adjustable shunt regulator with specified thermal stability over a wide temperature range.
- Low output noise and sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Adjustable output voltage settable between Vref (approximately 2.5V) and 36V using two external resistors.
- Typical output impedance of 0.2Ω.
- Sink-current capability from 1 mA to 100 mA.
Applications
- On-board voltage regulation.
- Adjustable power supplies.
- Switching power supplies.
- Automotive, commercial, and military applications due to its wide operating temperature range.
Q & A
- What is the TL431BQLPE3?
The TL431BQLPE3 is a precision programmable reference voltage regulator produced by Texas Instruments.
- What is the operating temperature range of the TL431BQLPE3?
The operating temperature range is from −40°C to 125°C.
- What is the adjustable output voltage range of the TL431BQLPE3?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What is the typical output impedance of the TL431BQLPE3?
The typical output impedance is 0.2Ω.
- What are the sink-current capabilities of the TL431BQLPE3?
The sink-current capability ranges from 1 mA to 100 mA.
- What are some common applications of the TL431BQLPE3?
Common applications include on-board voltage regulation, adjustable power supplies, and switching power supplies, as well as automotive, commercial, and military applications.
- What is the reference voltage tolerance at 25°C for the TL431BQLPE3?
The reference voltage tolerance at 25°C is 0.5% for the B grade, 1% for the A grade, and 2% for the standard grade.
- What package types are available for the TL431BQLPE3?
The TL431BQLPE3 is available in the TO-92 (LP) package.
- Is the TL431BQLPE3 suitable for high-temperature applications?
- Can the TL431BQLPE3 replace Zener diodes in some applications?
