Overview
The TL431AILPRE3 is a precision programmable reference voltage regulator produced by Texas Instruments. This three-terminal adjustable shunt regulator is known for its high thermal stability and wide operating temperature range, making it suitable for various applications. The device is part of the TL431 series, which is characterized by its adjustable output voltage and low output noise.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Cathode to Anode Voltage (VKA) | - | - | 37 | V |
| Continuous Cathode Current Range (IKA) | -100 | - | 150 | mA |
| Reference Input Current Range (Iref) | -0.05 | - | 10 | mA |
| Operating Junction Temperature Range (TJ) | - | - | 150 | °C |
| Operating Free-Air Temperature Range (TA) | -40 | - | 125 | °C |
| Reference Voltage (Vref) at 25°C | 2.44 | 2.495 | 2.55 | mV |
| Output Impedance | - | 0.2 | 0.5 | Ω |
| Sink-Current Capability | 1 | - | 100 | mA |
Key Features
- Adjustable output voltage from reference voltage to 36 V
- Low output noise
- Typical output impedance of 0.2 Ω
- Sink-current capability from 1 mA to 100 mA
- High thermal stability with specified temperature drift
- Operation over a wide temperature range: -40°C to 125°C for TL431AILPRE3
- Available in various packages including SOT-23-3, SOT-23-5, SOIC, PDIP, and SOP
Applications
- Rack server power supplies
- Industrial AC/DC power supplies
- AC inverter and VF drives
- Servo drive control modules
- Notebook PC power adapter designs
Q & A
- What is the TL431AILPRE3? The TL431AILPRE3 is a precision programmable reference voltage regulator produced by Texas Instruments.
- What is the operating temperature range of the TL431AILPRE3? The device operates from -40°C to 125°C.
- What is the adjustable output voltage range of the TL431AILPRE3? The output voltage can be adjusted from the reference voltage up to 36 V.
- What is the typical output impedance of the TL431AILPRE3? The typical output impedance is 0.2 Ω.
- What are the sink-current capabilities of the TL431AILPRE3? The device can sink currents from 1 mA to 100 mA.
- In what packages is the TL431AILPRE3 available? It is available in SOT-23-3, SOT-23-5, SOIC, PDIP, and SOP packages.
- What are some common applications of the TL431AILPRE3? Common applications include rack server power supplies, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter designs.
- What is the reference voltage tolerance at 25°C for the TL431AILPRE3? The reference voltage tolerance at 25°C can be 0.5% (B grade), 1% (A grade), or 2% (Standard grade).
- How does the TL431AILPRE3 handle thermal stability? The device is characterized for high thermal stability with specified temperature drift over the entire temperature range.
- What is the maximum junction temperature for the TL431AILPRE3? The maximum junction temperature is 150°C.
