Overview
The TLV431AIDR is a low-voltage adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TLV431 series, known for its low-voltage operation and high precision. It is designed to operate with a reference voltage of 1.24V and can be adjusted to output voltages ranging from 1.24V to 6V. The TLV431AIDR is particularly useful in applications requiring stable voltage regulation in industrial, automotive, telecommunications, and computing environments.
Key Specifications
| Parameter | Value |
|---|---|
| Reference Voltage (VREF) | 1.24V ±1% at 25°C |
| Output Voltage Range (VO) | 1.24V to 6V |
| Operating Temperature Range | –40°C to 85°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Current - Cathode | 80 µA typical |
| Output Impedance | 0.25Ω typical |
| Maximum Output Current | 15 mA |
Key Features
- Low-voltage operation with a reference voltage of 1.24V
- Adjustable output voltage from 1.24V to 6V using two external resistors
- High precision with a reference voltage tolerance of ±1% at 25°C
- Low operational cathode current of 80µA typical
- Ultra-small SC-70 package available, offering a 40% smaller footprint than SOT-23-3
- Typical output impedance of 0.25Ω
- Internally compensated for stability without an output capacitor
Applications
The TLV431AIDR is versatile and can be used in a variety of applications, including:
- On-board voltage regulation
- Adjustable power supplies
- Isolated feedback circuits for switching-mode power supplies (e.g., 3V to 3.3V supplies)
- Replacement for low-voltage Zener diodes
- Industrial, automotive, telecommunications, and computing equipment
Q & A
- What is the reference voltage of the TLV431AIDR?
The reference voltage (VREF) of the TLV431AIDR is 1.24V with a tolerance of ±1% at 25°C. - What is the adjustable output voltage range of the TLV431AIDR?
The output voltage can be adjusted from 1.24V to 6V using two external resistors. - What is the typical cathode current of the TLV431AIDR?
The typical cathode current is 80µA. - What is the maximum output current of the TLV431AIDR?
The maximum output current is 15 mA. - What are the operating temperature ranges for the TLV431AIDR?
The operating temperature range is –40°C to 85°C. - What package types are available for the TLV431AIDR?
The TLV431AIDR is available in 8-SOIC (0.154", 3.90mm Width) and other packages like SC-70. - Does the TLV431AIDR require an output capacitor for stability?
No, the TLV431AIDR is internally compensated and does not require an output capacitor for stability. - Can the TLV431AIDR be used as a replacement for Zener diodes?
Yes, the TLV431AIDR can be used as a replacement for low-voltage Zener diodes in many applications. - What are some common applications of the TLV431AIDR?
Common applications include on-board voltage regulation, adjustable power supplies, and isolated feedback circuits for switching-mode power supplies. - Is the TLV431AIDR suitable for industrial and automotive applications?
Yes, the TLV431AIDR is suitable for industrial, automotive, telecommunications, and computing applications due to its robust specifications and temperature range.
