Overview
The TL431ACDBZTG4 is a three-terminal adjustable precision shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its thermal stability across various temperature ranges, including automotive, commercial, and military applications. The TL431ACDBZTG4 is packaged in a SOT-23 (DBZ) package with 3 pins and operates within a temperature range of 0°C to 70°C. It offers adjustable output voltage from the reference voltage (approximately 2.5V) up to 36V, set using two external resistors. This regulator is an excellent replacement for Zener diodes in many applications due to its sharp turn-on characteristic and low output impedance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | - |
| Pins | 3 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | - |
| Adjustable Output Voltage | Vref to 36V | V |
| Typical Output Impedance | 0.2Ω | Ω |
| Sink-Current Capability | 1mA to 100mA | A |
| Typical Temperature Drift | 6mV (C temp), 14mV (I temp, Q temp) | mV |
Key Features
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), 2% (Standard grade).
- Adjustable output voltage: Vref to 36V, set using two external resistors.
- Operation from −40°C to 125°C, depending on the device grade.
- Low output noise and typical output impedance of 0.2Ω.
- Sink-current capability: 1mA to 100mA.
- Active output circuitry providing a sharp turn-on characteristic, making it an excellent replacement for Zener diodes.
Applications
- Rack server power supplies
- Industrial AC/DC power supplies
- AC inverter and VF drives
- Servo drive control modules
- Notebook PC power adapter designs
- On-board regulation
- Adjustable power supplies
- Switching power supplies
Q & A
- What is the TL431ACDBZTG4? The TL431ACDBZTG4 is a three-terminal adjustable precision shunt regulator produced by Texas Instruments.
- What is the package type of the TL431ACDBZTG4? It is packaged in a SOT-23 (DBZ) package with 3 pins.
- What is the operating temperature range of the TL431ACDBZTG4? The operating temperature range is from 0°C to 70°C.
- How is the output voltage of the TL431ACDBZTG4 adjusted? The output voltage can be set to any value between Vref (approximately 2.5V) and 36V using two external resistors.
- What are the reference voltage tolerances for the TL431ACDBZTG4? The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the typical output impedance of the TL431ACDBZTG4? The typical output impedance is 0.2Ω.
- What is the sink-current capability of the TL431ACDBZTG4? The sink-current capability ranges from 1mA to 100mA.
- In what applications is the TL431ACDBZTG4 commonly used? It is commonly used in rack server power supplies, industrial AC/DC power supplies, AC inverter and VF drives, servo drive control modules, and notebook PC power adapter designs.
- Can the TL431ACDBZTG4 replace Zener diodes? Yes, it can replace Zener diodes in many applications due to its sharp turn-on characteristic and low output impedance.
- What are the temperature drift characteristics of the TL431ACDBZTG4? The typical temperature drift is 6mV (C temp) and 14mV (I temp, Q temp).
