Overview
The TL431ACDCKTE4 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its precision and thermal stability across various temperature ranges. It is designed to provide a stable reference voltage that can be adjusted using two external resistors, making it versatile for a wide range of applications.
The TL431ACDCKTE4 operates within an ambient temperature range of 0°C to 70°C, making it suitable for commercial use. It features a reference voltage tolerance of ±1% at 25°C and can be set to any value between approximately 2.5V and 36V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance (at 25°C) | ±1% | - |
| Adjustable Output Voltage Range | 2.495V to 36V | V |
| Operating Ambient Temperature Range | 0°C to 70°C | °C |
| Cathode to Anode Voltage (VKA) | 37V | V |
| Cathode Current Range | -100mA to +150mA | mA |
| Reference Input Current Range | -0.05mA to +10mA | mA |
| Output Impedance (Typical) | 0.2Ω | Ω |
| Package Type | 8-SOIC (3.9mm Width) | - |
| Storage Temperature Range | -65°C to +150°C | °C |
Key Features
- Adjustable Output Voltage: The output voltage can be set to any value between approximately 2.5V and 36V using two external resistors.
- Precision Reference Voltage: Offers a reference voltage tolerance of ±1% at 25°C.
- Low Output Noise: Features low output noise, making it suitable for applications requiring stable voltage references.
- Low Output Impedance: Typical output impedance of 0.2Ω.
- Wide Operating Temperature Range: Operates from -40°C to 125°C for various grades, but the TL431ACDCKTE4 specifically operates from 0°C to 70°C.
- High Sink-Current Capability: Can sink currents from 1mA to 100mA.
- Thermal Stability: Ensures good stability over the entire temperature range with low temperature drift.
Applications
- On-Board Regulation: Suitable for on-board voltage regulation due to its adjustable output voltage and stability.
- Adjustable Power Supplies: Used in adjustable power supplies where a precise and adjustable voltage reference is required.
- Switching Power Supplies: Excellent for use in switching power supplies due to its sharp turn-on characteristic and low output impedance.
- Replacement for Zener Diodes: Often used as a replacement for Zener diodes in many applications due to its superior performance and stability.
Q & A
- What is the adjustable output voltage range of the TL431ACDCKTE4?
The adjustable output voltage range is from approximately 2.5V to 36V.
- What is the reference voltage tolerance of the TL431ACDCKTE4 at 25°C?
The reference voltage tolerance is ±1% at 25°C.
- What is the operating ambient temperature range for the TL431ACDCKTE4?
The operating ambient temperature range is from 0°C to 70°C.
- What is the typical output impedance of the TL431ACDCKTE4?
The typical output impedance is 0.2Ω.
- Can the TL431ACDCKTE4 replace Zener diodes in some applications?
Yes, it can often replace Zener diodes due to its superior performance and stability.
- What is the maximum cathode to anode voltage (VKA) for the TL431ACDCKTE4?
The maximum cathode to anode voltage (VKA) is 37V.
- What is the storage temperature range for the TL431ACDCKTE4?
The storage temperature range is from -65°C to +150°C.
- What is the typical temperature drift for the TL431 series?
The typical temperature drift is 6mV for C temperature grade and 14mV for I and Q temperature grades.
- What are some common applications of the TL431ACDCKTE4?
Common applications include on-board regulation, adjustable power supplies, and switching power supplies.
- What is the package type for the TL431ACDCKTE4?
The package type is 8-SOIC (3.9mm Width).
