Overview
The TL431CPKE6 is a precision programmable reference voltage regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, which are three-terminal adjustable shunt regulators known for their thermal stability and versatility. These devices are designed to operate over a wide temperature range, making them suitable for various automotive, commercial, and industrial applications. The TL431CPKE6 is particularly notable for its high accuracy and adjustable output voltage, making it an excellent choice for applications requiring precise voltage referencing.
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 36 V | V |
| Operating Temperature Range | –40°C to 125°C (Q Grade) | °C |
| Typical Temperature Drift | 6 mV (C Temp), 14 mV (I Temp, Q Temp) | mV |
| Output Impedance | 0.2-Ω (Typical) | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | SOT-89 (PK) | - |
| Junction-to-Ambient Thermal Resistance | 52 °C/W | °C/W |
Key Features
- High accuracy with reference voltage tolerance of 0.5%, 1%, and 2% at 25°C for B, A, and standard grades, respectively.
- Adjustable output voltage from Vref to 36 V.
- Low output noise and typical output impedance of 0.2-Ω.
- Sink-current capability ranging from 1 mA to 100 mA.
- Operation over a wide temperature range: –40°C to 125°C for Q grade devices.
- Low temperature drift, ensuring good stability over the entire temperature range.
- Available in various packages including SOT-89, SOIC, PDIP, SOP, and TSSOP.
Applications
- Adjustable voltage and current referencing.
- 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 TL431CPKE6?
The TL431CPKE6 is a precision programmable reference voltage regulator from Texas Instruments.
- What are the key features of the TL431CPKE6?
Key features include high accuracy, adjustable output voltage, low output noise, and a wide operating temperature range.
- What are the different grades of the TL431 and TL432 devices?
The devices are available in B, A, and standard grades with reference voltage tolerances of 0.5%, 1%, and 2% at 25°C, respectively.
- What is the typical temperature drift of the TL431CPKE6?
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 TL431CPKE6?
The typical output impedance is 0.2-Ω.
- What is the sink-current capability of the TL431CPKE6?
The sink-current capability ranges from 1 mA to 100 mA.
- In what packages is the TL431CPKE6 available?
The TL431CPKE6 is available in the SOT-89 (PK) package among others.
- What are some common applications of the TL431CPKE6?
Common applications include adjustable voltage and current referencing, rack server power supplies, industrial AC/DC power supplies, and servo drive control modules.
- What is the operating temperature range of the TL431CPKE6?
The operating temperature range is –40°C to 125°C for Q grade devices.
- How does the TL431CPKE6 compare to Zener diodes?
The TL431CPKE6 offers a sharper turn-on characteristic and higher accuracy, making it an excellent replacement for Zener diodes in many applications.
