Overview
The TL431BIDRG4 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 family, which includes three-terminal adjustable shunt regulators known for their thermal stability across various temperature ranges. These devices are versatile and can be used in a wide range of applications, including onboard regulation, adjustable power supplies, and switching power supplies. The TL431BIDRG4 offers high accuracy and stability, making it an excellent replacement for Zener diodes in many circuits.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Reference Voltage Tolerance at 25°C | % | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | ||
| Adjustable Output Voltage | V | Vref (approximately 2.5V) | 36V | |
| Operating Temperature Range | °C | -40°C | 125°C | |
| Typical Temperature Drift | mV | 6 mV (C temp), 14 mV (I temp, Q temp) | ||
| Output Impedance | Ω | 0.2 Ω | ||
| Sink-Current Capability | mA | 1 mA | 100 mA | |
| Package Type | SOIC-8 |
Key Features
- High accuracy reference voltage with tolerances of 0.5%, 1%, and 2% at 25°C for B, A, and standard grades, respectively.
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Operation over a wide temperature range from -40°C to 125°C.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- Rack server power supplies
- Industrial AC/DC power supplies
- AC inverter and variable frequency (VF) drives
- Servo drive control modules
- Notebook PC power adapter designs
- Onboard regulation and adjustable power supplies
- Switching power supplies
Q & A
- What is the TL431BIDRG4?
The TL431BIDRG4 is a precision programmable reference voltage regulator produced by Texas Instruments.
- What are the reference voltage tolerances for the TL431BIDRG4?
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 TL431BIDRG4?
The output voltage can be adjusted from Vref (approximately 2.5V) to 36V using two external resistors.
- What is the operating temperature range of the TL431BIDRG4?
The device operates from -40°C to 125°C.
- What is the typical output impedance of the TL431BIDRG4?
The typical output impedance is 0.2 Ω.
- What are the sink-current capabilities of the TL431BIDRG4?
The device can sink current from 1 mA to 100 mA.
- In what types of applications is the TL431BIDRG4 commonly used?
It is commonly used in rack server power supplies, industrial AC/DC power supplies, AC inverters, servo drive control modules, and notebook PC power adapter designs.
- Can the TL431BIDRG4 replace Zener diodes in some applications?
- What package type is the TL431BIDRG4 available in?
The TL431BIDRG4 is available in an SOIC-8 package.
- Where can I find more detailed specifications and documentation for the TL431BIDRG4?
You can find detailed specifications and documentation on the Texas Instruments website or through authorized distributors like Mouser and Digi-Key.
