Overview
The TL1431ACZ, produced by STMicroelectronics, is an adjustable shunt voltage reference known for its guaranteed temperature stability across the entire operating temperature range. This component allows for the output voltage to be set to any value between 2.5 V and 36 V using two external resistors. It operates with a wide current range from 1 to 100 mA and features a typical dynamic impedance of 0.2 Ω, ensuring stable voltage reference in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Cathode-to-anode voltage (VKA) | 2.5 to 36 | V |
| Continuous cathode current (Ik) | 1 to 100 | mA |
| Reference input voltage (Vref) | 2.490 to 2.510 | V |
| Reference input voltage deviation over temperature range (ΔVref) | 3 to 30 | mV |
| Temperature coefficient of reference input voltage | ±13 to ±100 | ppm/°C |
| Typical output impedance | 0.22 Ω | Ω |
| Operating temperature range (Toper) | -40 to +125 °C (for TL1431IY/AIY) | °C |
| Package | TO-92 | |
| Power dissipation (Pd) | 625 mW (for TO92 package) | mW |
| ESD protection | 2000 V (HBM), 200 V (MM), 1500 V (CDM) | V |
Key Features
- Adjustable output voltage: 2.5 V to 36 V using two external resistors
- Sink current capability: 1 to 100 mA
- Typical output impedance: 0.22 Ω
- Voltage precision: 0.4% and 0.25%
- Automotive temperature range: -40 °C to +125 °C
- Guaranteed temperature stability over the entire operating temperature range
Applications
The TL1431ACZ is suitable for a variety of applications, including industrial, automotive, and general-purpose electronic systems where a stable and adjustable voltage reference is required. It is particularly useful in power supplies, voltage regulators, and other circuits that demand precise voltage control over a wide temperature range.
Q & A
- What is the adjustable output voltage range of the TL1431ACZ? The output voltage can be set to any value between 2.5 V and 36 V using two external resistors.
- What is the sink current capability of the TL1431ACZ? The TL1431ACZ can sink current in the range of 1 to 100 mA.
- What is the typical output impedance of the TL1431ACZ? The typical output impedance is 0.22 Ω.
- What is the voltage precision of the TL1431ACZ? The voltage precision is 0.4% and 0.25%.
- What is the operating temperature range for the TL1431ACZ? The operating temperature range is -40 °C to +125 °C for the TL1431IY/AIY versions.
- What packages are available for the TL1431? The TL1431 is available in several packages including TO-92, SOT23, SOT23-5L, SOT323-6L, and SO-8.
- What is the power dissipation for the TO-92 package? The power dissipation for the TO-92 package is 625 mW.
- Does the TL1431ACZ have ESD protection? Yes, it has ESD protection with ratings of 2000 V (HBM), 200 V (MM), and 1500 V (CDM).
- What are some typical applications for the TL1431ACZ? Typical applications include industrial, automotive, and general-purpose electronic systems where a stable and adjustable voltage reference is required.
- How does the TL1431ACZ ensure temperature stability? The TL1431ACZ ensures temperature stability through its design, which guarantees stable operation over the entire operating temperature range.
