Overview
The TL431CPK is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, known for their adjustable output voltage and high thermal stability. This device is a three-terminal adjustable shunt regulator, making it versatile for various 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 | 2.495 V to 36 V | V |
| Operating Temperature Range | –40°C to 125°C (TL43xxQ) | °C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Output Noise | Low | - |
| Output Impedance | 0.2 Ω (typical) | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | SOT-89-3 | - |
Key Features
- High precision reference voltage with low temperature drift.
- Adjustable output voltage from 2.495 V to 36 V.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Operates over a wide temperature range, including –40°C to 125°C for the TL43xxQ devices.
Applications
- Rack server power systems.
- Industrial AC/DC power supplies.
- AC inverter and variable frequency (VF) drives.
- Servo drive control modules.
- Notebook PC power adapter designs.
Q & A
- What is the TL431CPK?
The TL431CPK is a precision programmable reference voltage regulator produced by Texas Instruments.
- What is the adjustable output voltage range of the TL431CPK?
The adjustable output voltage range is from 2.495 V to 36 V.
- What are the operating temperature ranges for the TL431CPK?
The operating temperature ranges vary by device grade, but the TL43xxQ devices operate from –40°C to 125°C.
- What is the typical temperature drift of the TL431CPK?
The typical temperature drift is 6 mV for C temperature grade and 14 mV for I and Q temperature grades.
- What is the output impedance of the TL431CPK?
The typical output impedance is 0.2 Ω.
- What are the common applications of the TL431CPK?
Common applications include rack server power systems, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter designs.
- What is the package type of the TL431CPK?
The package type is SOT-89-3.
- What is the sink-current capability of the TL431CPK?
The sink-current capability ranges from 1 mA to 100 mA.
- Is the TL431CPK suitable for high-temperature environments?
- What are the key benefits of using the TL431CPK?
The key benefits include high precision, low temperature drift, adjustable output voltage, low output noise, and a wide operating temperature range.
