Overview
The TL431ASA-7 is a three-terminal adjustable precision shunt regulator produced by Diodes Incorporated. It is part of the TL431 series, known for its excellent temperature stability and high output current handling capability up to 100mA. This device can be used as a replacement for zener diodes in various applications, offering improved performance and stability. The TL431ASA-7 is available in the SOT-23 package and is fully RoHS compliant, making it suitable for a wide range of electronic designs.
Key Specifications
| Parameter | Min | Typ. | Max | Unit |
|---|---|---|---|---|
| Reference Voltage (VREF) at 25°C | 2.470 | 2.495 | 2.520 | V |
| Reference Voltage Tolerance at 25°C (TL431A) | - | - | ±1.0% | - |
| Reference Voltage Tolerance at 25°C (TL431B) | - | - | ±0.5% | - |
| Cathode Voltage (VKA) | - | - | 40 | V |
| Continuous Cathode Current (IKA) | 1 | - | 100 | mA |
| Operating Junction Temperature (TJ) | -40 | - | 125 | °C |
| Storage Temperature (TST) | -55 | - | 150 | °C |
| Power Dissipation (PD) - SOT23 | - | - | 330 | mW |
Key Features
- Adjustable output voltage from 2.5V to 36V using external divider resistors
- Excellent temperature stability
- Low output noise
- Typical output impedance of 0.2Ω
- Sink current capability from 1mA to 100mA
- Totally lead-free and fully RoHS compliant
- Halogen and antimony free, classified as a “Green” device
Applications
- Opto-coupler linearisers
- Shunt regulators
- Improved zener diode replacements
- Variable reference voltage applications
- Series regulator output control
- Single supply comparators with temperature-compensated thresholds
- Over voltage / under voltage protection circuits
- Higher current shunt regulators
Q & A
- What is the TL431ASA-7?
The TL431ASA-7 is a three-terminal adjustable precision shunt regulator produced by Diodes Incorporated.
- What is the adjustable output voltage range of the TL431ASA-7?
The output voltage can be set to any chosen voltage between 2.5V and 36V using external divider resistors.
- What are the temperature stability characteristics of the TL431ASA-7?
The device offers excellent temperature stability with a reference voltage tolerance of ±1.0% for the TL431A grade and ±0.5% for the TL431B grade at 25°C.
- What is the maximum cathode current of the TL431ASA-7?
The maximum cathode current is 100mA.
- Is the TL431ASA-7 RoHS compliant?
- What are some common applications of the TL431ASA-7?
- What is the operating junction temperature range of the TL431ASA-7?
- What is the power dissipation rating for the SOT23 package?
- Is the TL431ASA-7 stable with any load capacitance?
- What are the environmental compliance features of the TL431ASA-7?
