Overview
The TL431IDBVR is a three-terminal adjustable shunt regulator produced by Texas Instruments. It is part of the TL431 and TL432 series, known for their specified thermal stability across automotive, commercial, and military temperature ranges. These devices are highly versatile and can be used in a variety of applications, including on-board regulation, adjustable power supplies, and switching power supplies. The TL431IDBVR offers a sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many scenarios.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage Tolerance at 25°C | 0.5% (B grade), 1% (A grade), 2% (Standard grade) | % |
| Adjustable Output Voltage | Vref to 36 V | V |
| Operating Temperature Range | −40°C to 125°C | °C |
| Typical Temperature Drift | 6 mV (C temp), 14 mV (I temp, Q temp) | mV |
| Typical Output Impedance | 0.2 Ω | Ω |
| Sink-Current Capability | 1 mA to 100 mA | mA |
| Package Type | SOT-23 (DBV) | - |
| Pins | 5 | - |
| Package Quantity | Carrier 3,000 (LARGE T&R) | - |
Key Features
- Reference voltage tolerance at 25°C: 0.5% (B grade), 1% (A grade), 2% (Standard grade)
- Adjustable output voltage: Vref to 36 V
- Operation from −40°C to 125°C
- Typical temperature drift: 6 mV (C temp), 14 mV (I temp, Q temp)
- Low output noise
- Typical output impedance: 0.2 Ω
- Sink-current capability: 1 mA to 100 mA
- Active output circuitry with a sharp turn-on characteristic
Applications
- Rack server power
- Industrial AC/DC power supplies
- AC inverter & VF drives
- Servo drive control modules
- Notebook PC power adapter designs
- Adjustable voltage and current referencing
- Secondary side regulation in flyback SMPSs
- Zener replacement
- Voltage monitoring
- Comparator with integrated reference
Q & A
- What is the TL431IDBVR?
The TL431IDBVR is a three-terminal adjustable shunt regulator produced by Texas Instruments.
- What are the reference voltage tolerances for the TL431IDBVR?
The reference voltage tolerances are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C.
- What is the adjustable output voltage range of the TL431IDBVR?
The adjustable output voltage range is from Vref (approximately 2.5 V) to 36 V.
- What is the operating temperature range of the TL431IDBVR?
The operating temperature range is from −40°C to 125°C.
- What is the typical output impedance of the TL431IDBVR?
The typical output impedance is 0.2 Ω.
- What is the sink-current capability of the TL431IDBVR?
The sink-current capability is from 1 mA to 100 mA.
- Can the TL431IDBVR replace Zener diodes in some applications?
- What are some common applications of the TL431IDBVR?
- What package type is the TL431IDBVR available in?
The TL431IDBVR is available in the SOT-23 (DBV) package type.
- How many pins does the TL431IDBVR have?
The TL431IDBVR has 5 pins.
