Overview
The TL431ACLPX is a three-terminal programmable shunt regulator diode produced by Fairchild Semiconductor, now part of onsemi. This monolithic IC voltage reference operates as a low temperature coefficient zener that can be programmed from the reference voltage to 36 V using two external resistors. It is designed for a wide range of applications requiring precise voltage regulation and low dynamic output impedance.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Voltage - Output (Max) | VKA | 36 | V |
| Current - Output | IK | -100 to +150 | mA |
| Reference Input Voltage | Vref | 2.495 | V |
| Reference Input Voltage Tolerance | ±1% | ||
| Dynamic Output Impedance | 0.22 Ω (Typical) | ||
| Temperature Coefficient | 50 ppm/°C (Typical) | ||
| Operating Junction Temperature | TJ | 150 °C | |
| Operating Ambient Temperature Range | TA | -40 to +125 °C | |
| Package | TO-92-3 (TO-226AA) Formed Leads |
Key Features
- Programmable output voltage up to 36 V using two external resistors.
- Low dynamic output impedance of 0.22 Ω (typical).
- Sink current capability from 1.0 mA to 100 mA.
- Equivalent full-range temperature coefficient of 50 ppm/°C (typical).
- Temperature compensated for operation over the full rated operating temperature range.
- Low output noise voltage.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
Applications
- Shunt regulator.
- High current shunt regulator.
- Series pass regulator.
- TRIAC crowbar.
- SRC crowbar.
- Voltage monitor.
- Linear ohmmeter.
- Simple 400 mW phono amplifier.
- High efficiency step-down switching converter.
Q & A
- What is the TL431ACLPX?
The TL431ACLPX is a three-terminal programmable shunt regulator diode produced by Fairchild Semiconductor.
- What is the maximum output voltage of the TL431ACLPX?
The maximum output voltage is 36 V.
- What is the reference input voltage of the TL431ACLPX?
The reference input voltage is 2.495 V.
- What is the dynamic output impedance of the TL431ACLPX?
The dynamic output impedance is 0.22 Ω (typical).
- What is the temperature coefficient of the TL431ACLPX?
The temperature coefficient is 50 ppm/°C (typical).
- What are the typical applications of the TL431ACLPX?
Typical applications include shunt regulators, high current shunt regulators, series pass regulators, TRIAC crowbar, SRC crowbar, voltage monitors, linear ohmmeters, simple phono amplifiers, and high efficiency step-down switching converters.
- Is the TL431ACLPX RoHS compliant?
- What is the operating junction temperature range of the TL431ACLPX?
The operating junction temperature range is up to 150 °C.
- What is the package type of the TL431ACLPX?
The package type is TO-92-3 (TO-226AA) Formed Leads.
- Is the TL431ACLPX suitable for automotive applications?
