Overview
The TL431ACP is a precision programmable reference voltage source 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 and versatility across various applications.
This device is widely used in electronic circuits that require a stable and adjustable reference voltage. The TL431ACP is particularly noted for its high accuracy, low output noise, and wide operating temperature range, making it suitable for a broad range of industrial, automotive, and commercial applications.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Voltage Tolerance at 25°C | Vref | V | 2.44 | 2.495 | 2.55 |
| Adjustable Output Voltage | Vout | V | - | - | 36 |
| Operating Junction Temperature Range | TJ | °C | -40 | - | 125 |
| Cathode to Anode Voltage | VKA | V | - | - | 37 |
| Continuous Cathode Current Range | IK | mA | -100 | - | 150 |
| Reference Input Current Range | Iref | mA | -0.05 | - | 10 |
| Typical Output Impedance | ZKA | Ω | - | 0.2 | - |
| Thermal Resistance, Junction-to-Ambient | RJA | °C/W | - | 114 | - |
Key Features
- Precision Reference Voltage: The TL431ACP offers a precise reference voltage with tolerances of ±1% at 25°C, ensuring high accuracy in voltage regulation.
- Adjustable Output Voltage: The output voltage can be adjusted from Vref to 36 V, providing flexibility in various applications.
- Wide Operating Temperature Range: The device operates from -40°C to 125°C, making it suitable for harsh environmental conditions.
- Low Output Noise: The TL431ACP has low output noise, which is crucial for applications requiring stable voltage references.
- High Sink-Current Capability: It can sink currents from 1 mA to 100 mA, supporting a wide range of load conditions.
- Low Output Impedance: The typical output impedance is 0.2 Ω, ensuring minimal voltage drop under load conditions.
Applications
- Rack Server Power: Used in power supply units for rack servers to provide stable reference voltages.
- Industrial AC/DC and AC Inverter & VF Drives: Employed in industrial power conversion systems for precise voltage regulation.
- Servo Drive Control Modules: Utilized in servo drive systems to ensure accurate and stable voltage references.
- Notebook PC Power Adapters: Used in the design of power adapters for notebooks to maintain stable output voltages.
- Automotive Systems: Applied in various automotive electronic systems requiring reliable and precise voltage references.
Q & A
- What is the TL431ACP?
The TL431ACP is a precision programmable reference voltage source produced by Texas Instruments.
- What is the reference voltage tolerance of the TL431ACP at 25°C?
The reference voltage tolerance is ±1% at 25°C.
- What is the adjustable output voltage range of the TL431ACP?
The output voltage can be adjusted from Vref to 36 V.
- What is the operating temperature range of the TL431ACP?
The device operates from -40°C to 125°C.
- What is the typical output impedance of the TL431ACP?
The typical output impedance is 0.2 Ω.
- What are some common applications of the TL431ACP?
Common applications include rack server power, industrial AC/DC and AC inverter & VF drives, servo drive control modules, notebook PC power adapters, and automotive systems.
- What is the maximum cathode to anode voltage for the TL431ACP?
The maximum cathode to anode voltage is 37 V.
- What is the continuous cathode current range for the TL431ACP?
The continuous cathode current range is from -100 mA to 150 mA.
- How does the TL431ACP ensure thermal stability?
The device is designed with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges.
- What package types are available for the TL431ACP?
The TL431ACP is available in various packages including DIP8, SOIC, and others as specified in the datasheet.
