Overview
The TL431AQDBZRQ1 is an adjustable precision shunt regulator produced by Texas Instruments. This device is specifically designed for automotive applications and is qualified under the AEC-Q100 standard. It features a three-pin SOT-23 (DBZ) package and operates over an ambient temperature range of –40°C to 125°C. The TL431AQDBZRQ1 is known for its thermal stability and adjustable output voltage, making it a versatile component for various power management applications.
Key Specifications
| Parameter | Description |
|---|---|
| Package | SOT-23 (DBZ) |
| Pins | 3 |
| Operating Temperature Range | –40°C to 125°C |
| Reference Voltage Tolerance at 25°C | 1% (A Grade), 0.5% (B Grade) |
| Typical Temperature Drift | 14 mV (Q Temp) |
| Output Impedance | 0.2 Ω (Typical) |
| Sink-Current Capability | 1 mA to 100 mA |
| Adjustable Output Voltage | VREF (approximately 2.5 V) to 36 V |
Key Features
- Qualified for automotive applications with AEC-Q100 test guidance
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
- Low output noise and 0.2-Ω typical output impedance
- Sink-current capability: 1 mA to 100 mA
- Adjustable output voltage from VREF (approximately 2.5 V) to 36 V with two external resistors
- Active output circuitry with sharp turn-on characteristic, suitable for replacing Zener diodes
Applications
- Onboard regulation
- Adjustable power supplies
- Switching power supplies
- Automotive power management systems
- Power over Data Lines (PoDL) in automotive applications
Q & A
- What is the operating temperature range of the TL431AQDBZRQ1?
The operating temperature range is –40°C to 125°C.
- What is the reference voltage tolerance at 25°C for the TL431AQDBZRQ1?
The reference voltage tolerance is 1% (A Grade) and 0.5% (B Grade) at 25°C.
- What is the typical output impedance of the TL431AQDBZRQ1?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431AQDBZRQ1?
The sink-current capability ranges from 1 mA to 100 mA.
- How can the output voltage of the TL431AQDBZRQ1 be adjusted?
The output voltage can be adjusted from VREF (approximately 2.5 V) to 36 V using two external resistors.
- What are some common applications of the TL431AQDBZRQ1?
Common applications include onboard regulation, adjustable power supplies, switching power supplies, and automotive power management systems.
- Is the TL431AQDBZRQ1 qualified for automotive use?
- What is the package type of the TL431AQDBZRQ1?
The package type is SOT-23 (DBZ) with 3 pins.
- Does the TL431AQDBZRQ1 have any pin-to-pin alternatives?
- What is the typical temperature drift of the TL431AQDBZRQ1?
The typical temperature drift is 14 mV (Q Temp).
