Overview
The TL431AIPG4 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, which are 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 power supplies, industrial equipment, and automotive systems. The TL431AIPG4 offers adjustable output voltage, low output noise, and high stability, making it an excellent choice for on-board regulation and adjustable power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 1% (A grade) | - |
| Adjustable Output Voltage | Vref to 36 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Typical Temperature Drift | 14 mV (I temp) | mV |
| Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Cathode Voltage | Up to 37 V | V |
| Reference Input Current | -0.05 to 10 mA | mA |
Key Features
- Adjustable output voltage from Vref (approximately 2.5 V) to 36 V using two external resistors.
- Low output noise and high stability over the entire temperature range.
- Typical output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- Operation from -40°C to 85°C (I grade).
- Sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- AEC-Q100 qualified for automotive applications.
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.
- Automotive systems.
- On-board regulation and adjustable power supplies.
Q & A
- What is the TL431AIPG4?
The TL431AIPG4 is a precision programmable reference voltage regulator from Texas Instruments. - What is the adjustable output voltage range of the TL431AIPG4?
The output voltage can be adjusted from Vref (approximately 2.5 V) to 36 V. - What are the operating temperature ranges for the TL431AIPG4?
The device operates from -40°C to 85°C (I grade). - What is the typical output impedance of the TL431AIPG4?
The typical output impedance is 0.2 Ω. - What is the sink-current capability of the TL431AIPG4?
The sink-current capability ranges from 1 mA to 100 mA. - Is the TL431AIPG4 suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications. - Can the TL431AIPG4 replace Zener diodes in some applications?
Yes, it has a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications. - What are some common applications of the TL431AIPG4?
Common applications include rack server power supplies, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter designs. - How accurate is the reference voltage tolerance of the TL431AIPG4 at 25°C?
The reference voltage tolerance at 25°C is 1% (A grade). - What is the typical temperature drift of the TL431AIPG4?
The typical temperature drift is 14 mV (I temp).
