Overview
The TL431CLP-Z is a 2% adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 series, which includes three-terminal adjustable shunt regulators known for their thermal stability across various temperature ranges. The TL431CLP-Z is packaged in a TO-92 (LP) package with 3 pins, making it suitable for a wide range of applications requiring precise voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref to 36V | V |
| Operating Temperature Range | −40°C to 125°C | °C |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
| Output Impedance | 0.2Ω (Typical) | Ω |
| Sink-Current Capability | 1mA to 100mA | mA |
| Package Type | TO-92 (LP) | - |
| Pins | 3 | - |
Key Features
- Adjustable Output Voltage: The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- Low Output Noise: The device features low output noise, making it suitable for applications requiring stable voltage references.
- Low Output Impedance: A typical output impedance of 0.2Ω ensures minimal voltage drop and efficient current handling.
- Wide Operating Temperature Range: The TL431CLP-Z operates from −40°C to 125°C, making it suitable for various environmental conditions.
- Sharp Turn-On Characteristic: The active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications.
Applications
- On-Board Regulation: The TL431CLP-Z can be used for on-board voltage regulation in various electronic systems.
- Adjustable Power Supplies: It is ideal for use in adjustable power supplies where precise voltage control is necessary.
- Switching Power Supplies: The device can be used in switching power supplies to provide a stable reference voltage.
- Replacement for Zener Diodes: The TL431CLP-Z can replace Zener diodes in many applications due to its sharp turn-on characteristic and adjustable output voltage.
Q & A
- What is the reference voltage tolerance of the TL431CLP-Z at 25°C?
The reference voltage tolerance is 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the adjustable output voltage range of the TL431CLP-Z?
The output voltage can be adjusted from Vref (approximately 2.5V) to 36V.
- What is the operating temperature range of the TL431CLP-Z?
The device operates from −40°C to 125°C.
- What is the typical output impedance of the TL431CLP-Z?
The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431CLP-Z?
The sink-current capability ranges from 1mA to 100mA.
- What package type is the TL431CLP-Z available in?
The TL431CLP-Z is available in a TO-92 (LP) package with 3 pins.
- Can the TL431CLP-Z replace Zener diodes in some applications?
Yes, the TL431CLP-Z can replace Zener diodes due to its sharp turn-on characteristic and adjustable output voltage).
- What are some common applications of the TL431CLP-Z?
Common applications include on-board regulation, adjustable power supplies, and switching power supplies).
- How does the TL431CLP-Z handle temperature drift?
The device has a low output drift versus temperature, with typical temperature drifts of 6mV (C temp) and 14mV (I temp, Q temp)).
- Is the TL431CLP-Z suitable for automotive, commercial, and military applications?
Yes, the TL431CLP-Z is characterized for operation in these environments due to its specified thermal stability over applicable temperature ranges).
