Overview
The TLV431BCDBZRG4 is a low-voltage, adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TLV431 series and is known for its low-voltage operation and high accuracy. It features a 3-terminal adjustable voltage reference with specified thermal stability over industrial and commercial temperature ranges. The TLV431BCDBZRG4 operates from a lower voltage (1.24V) compared to other widely used shunt-regulator references like the TL431 and TL1431, making it ideal for various low-voltage applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage (VREF) | 1.24 | V |
| Output Voltage Range (VO) | VREF to 6 | V |
| Reference Voltage Tolerance at 25°C | ±0.5% | |
| Output Impedance | 0.25 | Ω |
| Cathode Current for Regulation (IK) | 100 µA | |
| Maximum Output Voltage | 6 | V |
| Operating Temperature Range | 0°C to 70°C | |
| Package Type | SOT-23-3 (DBZ) | |
| Mounting Type | Surface Mount |
Key Features
- Low-voltage operation with a reference voltage of 1.24V.
- Adjustable output voltage from VREF (1.24V) to 6V using two external resistors.
- High accuracy with a reference voltage tolerance of ±0.5% at 25°C.
- Low output impedance of 0.25Ω.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for low-voltage Zener diodes.
- Ideal for isolated feedback circuits in 3V to 3.3V switching-mode power supplies when used with an optocoupler.
- No external capacitor required for stability.
Applications
- On-board regulation and adjustable power supplies.
- Isolated feedback circuits for 3V to 3.3V switching-mode power supplies.
- Replacement for low-voltage Zener diodes in various applications.
- Industrial, automotive, telecommunications, and computing equipment.
Q & A
- What is the reference voltage of the TLV431BCDBZRG4?
The reference voltage (VREF) of the TLV431BCDBZRG4 is 1.24V.
- What is the adjustable output voltage range of the TLV431BCDBZRG4?
The output voltage can be adjusted from VREF (1.24V) to 6V using two external resistors.
- What is the typical output impedance of the TLV431BCDBZRG4?
The typical output impedance is 0.25Ω.
- What is the minimum cathode current required for regulation?
The minimum cathode current required for regulation is 100 µA.
- What is the operating temperature range of the TLV431BCDBZRG4?
The operating temperature range is from 0°C to 70°C.
- What package type is the TLV431BCDBZRG4 available in?
The TLV431BCDBZRG4 is available in the SOT-23-3 (DBZ) package.
- Does the TLV431BCDBZRG4 require an external capacitor for stability?
No, the TLV431BCDBZRG4 does not require an external capacitor for stability.
- What are some common applications of the TLV431BCDBZRG4?
Common applications include on-board regulation, adjustable power supplies, and isolated feedback circuits in switching-mode power supplies.
- Can the TLV431BCDBZRG4 be used as a replacement for Zener diodes?
Yes, the TLV431BCDBZRG4 can be used as an excellent replacement for low-voltage Zener diodes due to its sharp turn-on characteristic.
- What is the lifecycle status of the TLV431BCDBZRG4?
The TLV431BCDBZRG4 is active and recommended for new designs.
