Overview
The TL431BCLPRMG, produced by onsemi, is a three-terminal programmable shunt regulator diode. It is part of the TL431 series, known for its precision and versatility in voltage regulation. This device operates as a low temperature coefficient zener diode, making it an excellent replacement for traditional zener diodes in various applications. The TL431BCLPRMG can be programmed to output voltages ranging from the reference voltage (approximately 2.5 V) up to 36 V using two external resistors, making it highly adaptable for different circuit designs.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reference Input Voltage | Vref | V | 2.44 | 2.495 | 2.55 |
| Continuous Cathode Current Range | IKA | mA | 1.0 | - | 100 |
| Dynamic Impedance | |ZKA| | Ω | 0.22 | - | 0.5 |
| Operating Free-Air Temperature | TA | °C | -40 | - | 85 |
| Storage Temperature Range | Tstg | °C | -65 | - | 150 |
| Total Power Dissipation @ TA = 25°C | PD | W | - | - | 0.70 (D, LP Suffix) |
| Thermal Resistance, Junction-to-Ambient | RθJA | °C/W | - | - | 178 (D, LP Suffix) |
Key Features
- Programmable Output Voltage: The TL431BCLPRMG can be set to any output voltage between the reference voltage (approximately 2.5 V) and 36 V using two external resistors.
- Voltage Reference Tolerance: The device has a voltage reference tolerance of ±0.4% at 25°C for the B grade.
- Low Dynamic Output Impedance: Typical dynamic impedance is 0.22 Ω, ensuring stable voltage regulation.
- Wide Operating Current Range: The device operates over a wide current range of 1.0 mA to 100 mA.
- Low Output Noise: The TL431BCLPRMG exhibits low output noise, making it suitable for noise-sensitive applications.
- Temperature Stability: The device has a low temperature drift, ensuring stable performance over a wide temperature range.
Applications
- Digital Voltmeters: The TL431BCLPRMG is used in digital voltmeters for precise voltage measurement.
- Power Supplies: It is used in adjustable power supplies and switching power supplies due to its programmable output voltage and low dynamic impedance.
- Op Amp Circuitry: The device is used in op-amp circuits to provide a stable reference voltage.
- Rack Server Power: It is applied in rack server power systems for reliable voltage regulation.
- Industrial AC/DC and AC Inverter & VF Drives: The TL431BCLPRMG is used in industrial AC/DC converters and AC inverter systems.
- Servo Drive Control Modules: It is utilized in servo drive control modules for precise voltage regulation.
- Notebook PC Power Adapters: The device is used in notebook PC power adapter designs for efficient and stable voltage regulation.
Q & A
- What is the typical reference input voltage of the TL431BCLPRMG?
The typical reference input voltage is approximately 2.495 V.
- What is the range of the continuous cathode current for the TL431BCLPRMG?
The continuous cathode current range is from 1.0 mA to 100 mA.
- What is the typical dynamic impedance of the TL431BCLPRMG?
The typical dynamic impedance is 0.22 Ω.
- What is the operating temperature range for the TL431BCLPRMG?
The operating temperature range is from -40°C to 85°C.
- Can the TL431BCLPRMG be used as a positive or negative voltage reference?
Yes, the TL431BCLPRMG can be used as either a positive or negative voltage reference since it operates as a shunt regulator.
- What is the storage temperature range for the TL431BCLPRMG?
The storage temperature range is from -65°C to 150°C.
- What is the total power dissipation at 25°C for the TL431BCLPRMG?
The total power dissipation at 25°C is 0.70 W for the D, LP suffix package.
- What is the thermal resistance, junction-to-ambient, for the TL431BCLPRMG?
The thermal resistance, junction-to-ambient, is 178 °C/W for the D, LP suffix package..
- In what types of applications is the TL431BCLPRMG commonly used?
The TL431BCLPRMG is commonly used in digital voltmeters, power supplies, op-amp circuitry, rack server power, industrial AC/DC and AC inverter & VF drives, servo drive control modules, and notebook PC power adapters..
- What are the advantages of using the TL431BCLPRMG over traditional zener diodes?
The TL431BCLPRMG offers advantages such as programmable output voltage, low dynamic impedance, and low temperature drift, making it a more versatile and stable option compared to traditional zener diodes...
