Overview
The TL431ACLPRPG is a three-terminal programmable shunt regulator diode produced by onsemi. This device is part of the TL431 series, which operates as a low temperature coefficient zener diode that can be programmed to output voltages from 2.5V to 36V using two external resistors. It is designed for a wide range of applications, including digital voltmeters, power supplies, and op-amp circuitry, making it an excellent replacement for traditional zener diodes.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Reference Input Voltage | Vref | 2.465 | 2.500 | 2.535 | V | IK = 10 mA, TA = 25°C |
| Cathode Current Range | IK | 1.0 | - | 100 | mA | - |
| Output Current | IO | 0.1 | - | 100 | mA | - |
| Thermal Resistance (Junction to Ambient) | RθJA | - | - | 150 | °C/W | TO-92 Package |
| Thermal Resistance (Junction to Case) | RθJC | - | - | 40 | °C/W | TO-92 Package |
| Operating Temperature Range | Toper | -40 | - | 70 | °C | - |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C | - |
| Power Dissipation | PD | - | - | 1000 | mW | TO-92 Package, Ta = 25°C |
| Dynamic Output Impedance | |ZKA| | - | 0.22 | 0.5 | Ω | IK = 1.0 mA to 100 mA, f ≤ 1.0 kHz |
| Line Regulation | ΔVref/ΔVI | - | 0.005 | - | %/V | IK = 10 mA, VI = 5V to 30V |
| Load Regulation | ΔVref/ΔIK | - | 0.001 | - | %/mA | VI = 30V, IK = 1.0 mA to 100 mA |
| Temperature Coefficient | TC | - | 35 | - | ppm/°C | - |
Key Features
- Programmable Output Voltage: The output voltage can be set to any value between 2.5V and 36V using two external resistors.
- Low Dynamic Output Impedance: Typical dynamic impedance of 0.22 Ω, making it suitable for applications requiring stable voltage references.
- Sink Current Capability: Can sink currents from 1 mA to 100 mA.
- Low Output Noise: Features low output noise, enhancing the overall stability of the circuit.
- Temperature Stability: Characterized for operation over a wide temperature range, with an equivalent full-range temperature coefficient of 35 ppm/°C).
- Pb-Free Packages Available: Compliant with lead-free packaging requirements, making it suitable for modern electronic designs).
Applications
- Digital Voltmeters: Used as a stable voltage reference in digital voltmeters due to its precision and temperature stability).
- Power Supplies: Employed in adjustable power supplies and switching power supplies to provide a stable output voltage).
- Op-Amp Circuitry: Often used in op-amp circuits to provide a precise reference voltage).
- On-Board Regulation: Suitable for on-board voltage regulation in various electronic devices).
Q & A
- What is the TL431ACLPRPG?
The TL431ACLPRPG is a three-terminal programmable shunt regulator diode produced by onsemi, designed for precision voltage regulation.
- What is the adjustable output voltage range of the TL431ACLPRPG?
The output voltage can be set to any value between 2.5V and 36V using two external resistors.
- What is the typical dynamic output impedance of the TL431ACLPRPG?
The typical dynamic output impedance is 0.22 Ω.
- What is the sink current capability of the TL431ACLPRPG?
The device can sink currents from 1 mA to 100 mA.
- What is the operating temperature range of the TL431ACLPRPG?
The operating temperature range is from -40°C to 70°C.
- What are some common applications of the TL431ACLPRPG?
Common applications include digital voltmeters, power supplies, op-amp circuitry, and on-board voltage regulation.
- How does the TL431ACLPRPG compare to traditional zener diodes?
The TL431ACLPRPG offers better temperature stability and a wider range of adjustable output voltages compared to traditional zener diodes.
- What is the storage temperature range for the TL431ACLPRPG?
The storage temperature range is from -65°C to 150°C.
- What is the maximum power dissipation for the TL431ACLPRPG in a TO-92 package?
The maximum power dissipation is 1000 mW at an ambient temperature of 25°C.
- Is the TL431ACLPRPG available in Pb-free packages?
