Overview
The TL431AS-13 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. This device is known for its excellent temperature stability and high output current handling capability up to 100mA. It is designed to offer a programmable output voltage that can be set to any value between 2.5V and 36V using two external divider resistors. The TL431AS-13 is a versatile component that can replace zener diodes in many applications, providing improved performance and stability.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reference Voltage | VREF | 2.470 | 2.495 | 2.520 | V |
| Cathode Voltage | VKA | - | - | 36 | V |
| Cathode Current | IKA | 1 | - | 100 | mA |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Storage Temperature Range | TSTG | -65 | - | 150 | °C |
| Power Dissipation (SOT23) | PD | - | - | 330 | mW |
| Output Impedance | - | - | 0.2 | - | Ω |
Key Features
- Programmable output voltage up to 36V using two external resistors.
- Low dynamic output impedance of 0.2Ω typical.
- Sink current capability from 1mA to 100mA.
- Temperature compensated for operation over the full rated operating temperature range.
- Low output noise voltage.
- Fast turn-on response.
- Totally lead-free and fully RoHS compliant.
- Halogen and antimony free, making it a “green” device.
Applications
- Opto-coupler linearizers.
- Shunt regulators.
- Improved zener diode replacements.
- Output control for three-terminal fixed regulators.
- Over-voltage and under-voltage protection circuits.
- Higher current shunt regulators.
- Current limit or current source applications.
Q & A
- What is the TL431AS-13? The TL431AS-13 is a three-terminal adjustable precision shunt regulator produced by Diodes Incorporated.
- What is the output voltage range of the TL431AS-13? The output voltage can be set to any value between 2.5V and 36V using external resistors.
- What is the maximum cathode current of the TL431AS-13? The maximum cathode current is 100mA.
- What is the operating ambient temperature range of the TL431AS-13? The operating ambient temperature range is -40°C to +125°C.
- Is the TL431AS-13 RoHS compliant? Yes, the TL431AS-13 is totally lead-free and fully RoHS compliant.
- What are some common applications of the TL431AS-13? Common applications include opto-coupler linearizers, shunt regulators, and improved zener diode replacements.
- What is the typical output impedance of the TL431AS-13? The typical output impedance is 0.2Ω.
- Can the TL431AS-13 be used in high-temperature environments? Yes, it is designed to operate over a wide temperature range, including up to 125°C.
- Is the TL431AS-13 suitable for replacing zener diodes? Yes, it is designed to replace zener diodes in many applications, offering improved performance and stability.
- What is the storage temperature range for the TL431AS-13? The storage temperature range is -65°C to +150°C.
