Overview
The TLV431AIDBVRG4 is a low-voltage, adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TLV431 series, known for its high accuracy and thermal stability over a wide range of temperatures. The TLV431AIDBVRG4 operates with a reference voltage of 1.24V and can be adjusted to output voltages from 1.24V to 6V using two external resistors. It is packaged in a 5-pin SOT-23 (DBV) package, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (VREF) | 1.24 | V |
| Output Voltage Range (VO) | 1.24 to 6 | V |
| Reference Voltage Tolerance at 25°C | 1% | |
| Typical Temperature Drift | 6 mV (–40°C to 85°C) | mV |
| Operational Cathode Current | 80 µA (typical) | µA |
| Output Impedance | 0.25 Ω (typical) | Ω |
| Package Type | SOT-23 (DBV) 5-pin | |
| Operating Temperature Range | –40°C to 85°C | °C |
| Supply Voltage Range | 1.24 to 6 V | V |
| Moisture Sensitivity Level | 1 | |
| Peak Reflow Temperature | 260 °C | °C |
Key Features
- Low-voltage operation with a reference voltage of 1.24V
- Adjustable output voltage from 1.24V to 6V using two external resistors
- High accuracy with 1% reference voltage tolerance at 25°C
- Low operational cathode current of 80 µA (typical)
- Low output impedance of 0.25 Ω (typical)
- Ultra-small SOT-23 (DBV) package for space-constrained applications
- Internal compensation for stability without an output capacitor
- Suitable for use as a Zener diode replacement and in voltage monitoring applications
Applications
- Adjustable voltage and current referencing
- Secondary side regulation in flyback switching-mode power supplies (SMPS)
- Zener diode replacement
- Voltage monitoring
- Comparator with integrated reference
- On-board regulation and adjustable power supplies
- Isolated feedback circuits for 3V to 3.3V switching-mode power supplies
Q & A
- What is the reference voltage of the TLV431AIDBVRG4?
The reference voltage (VREF) is 1.24V.
- What is the adjustable output voltage range of the TLV431AIDBVRG4?
The output voltage can be adjusted from 1.24V to 6V using two external resistors.
- What is the typical operational cathode current of the TLV431AIDBVRG4?
The typical operational cathode current is 80 µA.
- What is the output impedance of the TLV431AIDBVRG4?
The typical output impedance is 0.25 Ω.
- In what package is the TLV431AIDBVRG4 available?
The TLV431AIDBVRG4 is available in a 5-pin SOT-23 (DBV) package.
- What is the operating temperature range of the TLV431AIDBVRG4?
The operating temperature range is –40°C to 85°C.
- Can the TLV431AIDBVRG4 be used as a Zener diode replacement?
- What are some common applications of the TLV431AIDBVRG4?
- Does the TLV431AIDBVRG4 require an output capacitor for stability?
- How is the output voltage of the TLV431AIDBVRG4 adjusted?
The output voltage is adjusted using two external resistors connected to the reference and cathode pins.
