Overview
The TL431BVLPRAG is a three-terminal programmable shunt regulator diode produced by onsemi. This device operates as a low temperature coefficient zener diode, which can be programmed to output voltages from the reference voltage (Vref) up to 36 V using two external resistors. It is part of the TL431 series, known for its wide operating current range and low dynamic impedance, making it an excellent replacement for traditional zener diodes in various applications.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Input Voltage (Vref) | Vref | V | 2.44 | 2.495 | 2.55 |
| Reference Input Voltage Deviation Over Temperature Range | ΔVref | mV | - | - | - |
| Off-State Cathode Current | Ioff | nA | 20 | 1000 | 1000 |
| Dynamic Impedance | |ZKA| | Ω | 0.22 | 0.5 | 0.5 |
| Operating Junction Temperature | TJ | °C | - | - | 150 |
| Operating Ambient Temperature Range | TA | °C | -40 | - | 125 |
| Storage Temperature Range | Tstg | °C | -65 | - | 150 |
| Total Power Dissipation @ TA = 25°C | PD | W | - | - | 0.70 (D, LP Suffix) |
Key Features
- Programmable Output Voltage: Adjustable output voltage from Vref to 36 V using two external resistors.
- Voltage Reference Tolerance: ±0.4% typical at 25°C for the TL431B grade.
- Low Dynamic Output Impedance: Typical dynamic impedance of 0.22 Ω.
- Sink Current Capability: Operates over a wide current range of 1.0 mA to 100 mA.
- Temperature Stability: Equivalent full-range temperature coefficient of 50 ppm/°C typical.
- Low Output Noise: Low noise voltage output.
- AEC-Q100 Qualified and PPAP Capable: Suitable for automotive and other applications requiring unique site and control change requirements.
- Pb-Free, Halogen Free/BFR Free and RoHS Compliant: Environmentally friendly packaging).
Applications
The TL431BVLPRAG is versatile and can be used in various applications, including:
- Digital Voltmeters: As a stable voltage reference.
- Power Supplies: For feedback control and voltage regulation.
- Op Amp Circuitry: As a precision voltage reference.
- Constant Current Source/Sink: For maintaining stable current levels).
- Series Pass Regulator: For voltage regulation in linear power supplies).
- Voltage Monitor: To monitor and regulate voltage levels in various circuits).
Q & A
- What is the typical reference input voltage (Vref) of the TL431BVLPRAG?
The typical reference input voltage (Vref) is 2.495 V.
- What is the operating current range of the TL431BVLPRAG?
The device operates over a current range of 1.0 mA to 100 mA.
- What is the maximum operating junction temperature of the TL431BVLPRAG?
The maximum operating junction temperature is 150°C.
- What is the typical dynamic impedance of the TL431BVLPRAG?
The typical dynamic impedance is 0.22 Ω.
- Is the TL431BVLPRAG suitable for automotive applications?
- What is the storage temperature range for the TL431BVLPRAG?
The storage temperature range is from -65°C to 150°C.
- Can the TL431BVLPRAG be used as a negative voltage reference?
- What is the voltage reference tolerance of the TL431BVLPRAG at 25°C?
The voltage reference tolerance is ±0.4% typical at 25°C.
- Is the TL431BVLPRAG RoHS compliant?
- What are some common applications of the TL431BVLPRAG?
