Overview
The TL431LIBEDBZRQ1 is a three-pin adjustable shunt regulator produced by Texas Instruments. It is designed with specified thermal stability over applicable automotive temperature ranges, making it suitable for a variety of automotive applications. The device features an adjustable output voltage that can be set to any value from approximately 2.5 V to 36 V using two external resistors. This regulator is known for its low output noise, sharp turn-on characteristic, and high accuracy, making it an excellent replacement for Zener diodes in many applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Device Temperature Range | -40°C to 125°C | °C |
| Reference Voltage Tolerance at 25°C | 1% (A Grade), 0.5% (B Grade) | % |
| Typical Temperature Drift | 14 mV (Q Temp) | mV |
| Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Adjustable Output Voltage | Approximately 2.5 V to 36 V | V |
| Package Type | SOT-23 (DBZ) | - |
| Number of Pins | 3 | - |
Key Features
- Qualified for automotive applications with AEC-Q100 test guidance.
- Wide ambient operating temperature range: -40°C to 125°C.
- Low output noise and typical output impedance of 0.2 Ω.
- Sink-current capability from 1 mA to 100 mA.
- Adjustable output voltage from approximately 2.5 V to 36 V using two external resistors.
- Sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
- Better stability, lower temperature drift, and lower reference current compared to non-LI versions for improved system accuracy.
Applications
- Onboard regulation in automotive systems.
- Adjustable power supplies.
- Switching power supplies.
- Automotive LED lighting with adjustable shunt references.
- Power over Data Lines (PoDL) in automotive applications.
Q & A
- What is the operating temperature range of the TL431LIBEDBZRQ1?
The operating temperature range is -40°C to 125°C.
- What is the reference voltage tolerance at 25°C for the TL431LIBEDBZRQ1?
The reference voltage tolerance is 1% (A Grade) and 0.5% (B Grade) at 25°C.
- What is the typical temperature drift of the TL431LIBEDBZRQ1?
The typical temperature drift is 14 mV (Q Temp).
- What is the output impedance of the TL431LIBEDBZRQ1?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431LIBEDBZRQ1?
The sink-current capability ranges from 1 mA to 100 mA.
- How can the output voltage of the TL431LIBEDBZRQ1 be adjusted?
The output voltage can be adjusted to any value from approximately 2.5 V to 36 V using two external resistors.
- What package type and pin count does the TL431LIBEDBZRQ1 come in?
The TL431LIBEDBZRQ1 comes in a SOT-23 (DBZ) package with 3 pins.
- Is the TL431LIBEDBZRQ1 qualified for automotive applications?
Yes, it is qualified for automotive applications with AEC-Q100 test guidance.
- What are some common applications of the TL431LIBEDBZRQ1?
Common applications include onboard regulation, adjustable power supplies, switching power supplies, and automotive LED lighting.
- How does the TL431LIBEDBZRQ1 compare to non-LI versions in terms of stability and temperature drift?
The TL431LIBEDBZRQ1 offers better stability, lower temperature drift, and lower reference current compared to non-LI versions for improved system accuracy.
