Overview
The TL431BIDG is a three-terminal programmable shunt regulator diode produced by onsemi. This monolithic IC voltage reference operates as a low temperature coefficient zener, which can be programmed from the reference voltage (Vref) to 36 V using two external resistors. The device is known for its wide operating current range of 1.0 mA to 100 mA and a typical dynamic impedance of 0.22 Ω. The 2.5 V reference voltage makes it convenient to obtain a stable reference from 5.0 V logic supplies, and it can be used as either a positive or negative voltage reference due to its shunt regulator operation.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Reference Input Voltage | Vref | 2.44 - 2.495 | V |
| Voltage Reference Tolerance | - | ±0.4% (Typ @ 25°C) | % |
| Dynamic Output Impedance | |ZKA| | 0.22 Ω (Typ) | Ω |
| Sink Current Capability | - | 1.0 mA to 100 mA | mA |
| Equivalent Full-Range Temperature Coefficient | - | 50 ppm/°C (Typ) | ppm/°C |
| Cathode to Anode Voltage | VKA | 37 V | V |
| Operating Junction Temperature | TJ | 150 °C | °C |
| Operating Ambient Temperature Range | TA | -40°C to 85°C | °C |
Key Features
- Programmable Output Voltage to 36 V
- Voltage Reference Tolerance: ±0.4% (Typ @ 25°C)
- Low Dynamic Output Impedance, 0.22 Ω Typical
- Sink Current Capability of 1.0 mA to 100 mA
- Equivalent Full-Range Temperature Coefficient of 50 ppm/°C Typical
- Temperature Compensated for Operation over Full Rated Operating Temperature Range
- Low Output Noise Voltage
- Pb-Free Packages are Available
Applications
The TL431BIDG is suitable for various applications, including:
- Digital voltmeters
- Power supplies
- Op amp circuitry
- Any application requiring a stable and programmable voltage reference
Q & A
- What is the TL431BIDG?
The TL431BIDG is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the programmable output voltage range of the TL431BIDG?
The output voltage can be programmed from the reference voltage (Vref) to 36 V using two external resistors.
- What is the typical dynamic impedance of the TL431BIDG?
The typical dynamic impedance is 0.22 Ω.
- What is the operating current range of the TL431BIDG?
The device operates over a current range of 1.0 mA to 100 mA.
- What is the temperature coefficient of the TL431BIDG?
The equivalent full-range temperature coefficient is 50 ppm/°C Typical.
- What are the typical applications of the TL431BIDG?
It is used in digital voltmeters, power supplies, op amp circuitry, and any application requiring a stable and programmable voltage reference.
- What is the operating ambient temperature range of the TL431BIDG?
The operating ambient temperature range is -40°C to 85°C.
- Is the TL431BIDG available in Pb-Free packages?
- What is the maximum cathode to anode voltage for the TL431BIDG?
The maximum cathode to anode voltage is 37 V.
- What is the maximum operating junction temperature for the TL431BIDG?
The maximum operating junction temperature is 150 °C.
