Overview
The TL431BILPE3 is a precision adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 family, known for its high accuracy and thermal stability. This device is particularly useful in applications requiring adjustable voltage regulation with a high degree of precision. The TL431BILPE3 operates over a wide temperature range, making it suitable for various automotive, commercial, and military applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref to 36 V | V |
| Operating Temperature Range | −40°C to 125°C | °C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Output Impedance | 0.2 Ω (typical) | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | TO-92 | - |
Key Features
- High accuracy with reference voltage tolerance of 0.5%, 1%, and 2% at 25°C for B, A, and standard grades, respectively.
- Adjustable output voltage from Vref (approximately 2.5 V) to 36 V using two external resistors.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Operates over a wide temperature range, including automotive, commercial, and military grades.
Applications
- On-board voltage regulation.
- Adjustable power supplies.
- Switching power supplies.
- Rack server power systems.
- Industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
Q & A
- What is the TL431BILPE3 used for?
The TL431BILPE3 is used as a precision adjustable shunt regulator in various applications requiring high accuracy voltage regulation.
- What are the reference voltage tolerances for the TL431BILPE3?
The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the adjustable output voltage range of the TL431BILPE3?
The output voltage can be adjusted from Vref (approximately 2.5 V) to 36 V using two external resistors.
- What is the operating temperature range of the TL431BILPE3?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431BILPE3?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431BILPE3?
The sink-current capability ranges from 1 mA to 100 mA.
- Can the TL431BILPE3 replace Zener diodes in some applications?
- What are some common applications of the TL431BILPE3?
- What package type is the TL431BILPE3 available in?
The TL431BILPE3 is available in the TO-92 package.
- How does the TL431BILPE3 ensure thermal stability?
The device ensures thermal stability through its specified thermal characteristics over a wide temperature range, including automotive, commercial, and military grades.
