Overview
The TL431BIDG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 series, known for its specified thermal stability over a wide range of temperatures, making it suitable for automotive, commercial, and military applications. The device features active output circuitry that provides a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in various applications such as on-board regulation, adjustable power supplies, and switching power supplies.
Key Specifications
| Characteristic | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref to 36V | V |
| Operating Temperature Range | −40°C to 125°C | °C |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
| Output Impedance | 0.2Ω | Ω |
| Sink-Current Capability | 1mA to 100mA | mA |
| Cathode to Anode Voltage | 37V | V |
| Operating Junction Temperature | 150°C | °C |
| Package Type | SOIC (D) | |
| Pins | 8 |
Key Features
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), 2% (Standard grade)
- Adjustable output voltage: Vref to 36V
- Operation from −40°C to 125°C
- Typical temperature drift: 6mV (C temp), 14mV (I temp, Q temp)
- Low output noise
- Typical output impedance: 0.2Ω
- Sink-current capability: 1mA to 100mA
- Active output circuitry with a sharp turn-on characteristic
Applications
- On-board regulation
- Adjustable power supplies
- Switching power supplies
- Replacement for Zener diodes in various applications
- Automotive, commercial, and military temperature ranges
Q & A
- What is the TL431BIDG4?
The TL431BIDG4 is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What are the reference voltage tolerances for the TL431BIDG4?
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 TL431BIDG4?
The adjustable output voltage range is from Vref (approximately 2.5V) to 36V.
- What is the operating temperature range of the TL431BIDG4?
The operating temperature range is from −40°C to 125°C.
- What is the typical output impedance of the TL431BIDG4?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431BIDG4?
The sink-current capability is from 1mA to 100mA.
- What are some common applications of the TL431BIDG4?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, and as a replacement for Zener diodes.
- What package type is the TL431BIDG4 available in?
The TL431BIDG4 is available in the SOIC (D) package with 8 pins.
- What is the maximum cathode to anode voltage for the TL431BIDG4?
The maximum cathode to anode voltage is 37V.
- What is the operating junction temperature of the TL431BIDG4?
The operating junction temperature is up to 150°C.
