Overview
The TL431ACLP is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, known for their specified thermal stability over various temperature ranges, including automotive, commercial, and military environments. The device allows for adjustable output voltage between the reference voltage (approximately 2.5V) and 36V, using two external resistors. This makes it an excellent replacement for Zener diodes in many applications, such as on-board regulation, adjustable power supplies, and switching power supplies.
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 | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | TO-92 (LP) | |
| Package Quantity | 1000 (Bulk) |
Key Features
- Adjustable output voltage from Vref (approximately 2.5V) to 36V using two external resistors.
- Operation from −40°C to 125°C with specified thermal stability.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Available in three grades with initial tolerances of 0.5%, 1%, and 2% at 25°C.
- Active output circuitry providing a sharp turn-on characteristic, making it a suitable replacement for Zener diodes.
Applications
- On-board regulation.
- Adjustable power supplies.
- Switching power supplies.
- Rack server power.
- Industrial AC/DC power supplies.
- AC inverter and VF drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
Q & A
- What is the TL431ACLP?
The TL431ACLP is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431ACLP?
The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What are the operating temperature ranges for the TL431ACLP?
The device operates from −40°C to 125°C.
- What are the typical temperature drift values for the TL431ACLP?
The typical temperature drift values are 6 mV for C temp and 14 mV for I and Q temps.
- What is the typical output impedance of the TL431ACLP?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431ACLP?
The sink-current capability ranges from 1 mA to 100 mA.
- In what package types is the TL431ACLP available?
The TL431ACLP is available in the TO-92 (LP) package.
- How many units are typically included in a bulk package of TL431ACLP?
A bulk package typically includes 1000 units.
- What are some common applications of the TL431ACLP?
Common applications include on-board regulation, adjustable power supplies, switching power supplies, and more.
- What are the differences between TL431ACLP and TL431ACLPR?
The main difference is in the packaging; TL431ACLP is shipped in bulk carriers, while TL431ACLPR is shipped in tape and reel.
