Overview
The TLV431AIDBZRG4 is a low-voltage, adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TLV431 family, known for its high accuracy and versatility in various electronic applications. The TLV431AIDBZRG4 operates with a reference voltage of 1.24V and can be adjusted to output voltages ranging from 1.24V to 6V using external resistors. This component is particularly useful in applications requiring precise voltage regulation and low operational currents.
Key Specifications
| Parameter | Value |
|---|---|
| Reference Voltage (VREF) | 1.24V |
| Output Voltage Range (VO) | 1.24V to 6V |
| Reference Voltage Tolerance at 25°C | 1% |
| Typical Temperature Drift | 4mV (0°C to 70°C), 6mV (–40°C to 85°C), 11mV (–40°C to 125°C) |
| Operational Cathode Current (Ik) | 80µA typical |
| Output Impedance | 0.25Ω typical |
| Package Type | SOT-23 (DBZ) |
| Pins | 3 |
Key Features
- Low-voltage operation with a reference voltage of 1.24V
- Adjustable output voltage from 1.24V to 6V using external resistors
- High accuracy with 1% reference voltage tolerance at 25°C
- Low operational cathode current of 80µA typical
- Ultra-small SOT-23 package for compact designs
- Internally compensated for stability without an output capacitor
- Active output circuitry providing a sharp turn-on characteristic
Applications
- Isolated feedback circuits for 3V to 3.3V switching-mode power supplies
- On-board regulation and adjustable power supplies
- Replacement for low-voltage Zener diodes in various applications
- Industrial and commercial temperature range applications
Q & A
- What is the reference voltage of the TLV431AIDBZRG4?
The reference voltage is 1.24V. - What is the adjustable output voltage range of the TLV431AIDBZRG4?
The output voltage can be adjusted from 1.24V to 6V using external resistors. - What is the reference voltage tolerance at 25°C for the TLV431AIDBZRG4?
The reference voltage tolerance is 1% at 25°C. - What is the typical operational cathode current of the TLV431AIDBZRG4?
The typical operational cathode current is 80µA. - What is the typical output impedance of the TLV431AIDBZRG4?
The typical output impedance is 0.25Ω. - In what package is the TLV431AIDBZRG4 available?
The TLV431AIDBZRG4 is available in a SOT-23 (DBZ) package. - Does the TLV431AIDBZRG4 require an output capacitor for stability?
No, the TLV431AIDBZRG4 is internally compensated and does not require an output capacitor for stability. - What are some common applications of the TLV431AIDBZRG4?
Common applications include isolated feedback circuits for switching-mode power supplies, on-board regulation, and replacement for low-voltage Zener diodes. - What is the temperature drift of the TLV431AIDBZRG4?
The temperature drift is 4mV (0°C to 70°C), 6mV (–40°C to 85°C), and 11mV (–40°C to 125°C). - How does the TLV431AIDBZRG4 behave when used as a comparator?
When used as a comparator, the TLV431AIDBZRG4 compares the Vref pin voltage to the internal virtual reference voltage and provides a quick response with sufficient overdrive voltage.
