Overview
The TL431BQPK is a precision programmable shunt regulator produced by Texas Instruments. This device is part of the TL431 and TL432 series, known for their thermal stability and adjustable output voltage. The TL431BQPK is particularly suited for applications requiring high precision and reliability across various temperature ranges.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | ±0.5% (B grade) | % |
| Adjustable Output Voltage | 2.495 V to 36 V | V |
| Operating Temperature Range | −40°C to 125°C | °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 (4-pin + tab) |
Key Features
- Precision programmable shunt regulator with adjustable output voltage from 2.495 V to 36 V.
- High thermal stability over a wide temperature range (−40°C to 125°C).
- Low output noise and low output impedance (0.2 Ω typical).
- Sink-current capability from 1 mA to 100 mA.
- Compact SOT-89-3 package with 4 pins and a tab.
Applications
- Rack server power supplies.
- 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 TL431BQPK used for? The TL431BQPK is used as a precision programmable shunt regulator in various applications requiring stable voltage references.
- What is the adjustable output voltage range of the TL431BQPK? The adjustable output voltage range is from 2.495 V to 36 V.
- What is the operating temperature range of the TL431BQPK? The operating temperature range is from −40°C to 125°C.
- What is the typical temperature drift of the TL431BQPK? The typical temperature drift is 6 mV (C temp) and 14 mV (I temp, Q temp).
- What is the output impedance of the TL431BQPK? The output impedance is typically 0.2 Ω.
- What is the sink-current capability of the TL431BQPK? The sink-current capability ranges from 1 mA to 100 mA.
- In what package is the TL431BQPK available? The TL431BQPK is available in a SOT-89-3 package with 4 pins and a tab.
- What are some common applications of the TL431BQPK? 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 of the TL431BQPK at 25°C? The reference voltage tolerance at 25°C is ±0.5% (B grade).
- Does the TL431BQPK have low output noise? Yes, the TL431BQPK has low output noise.
