Overview
The TL431BCLPRM is a three-terminal programmable shunt regulator diode produced by onsemi. This monolithic IC voltage reference operates as a low temperature coefficient zener that can be programmed from the reference voltage (Vref) to 36 V using two external resistors. It is designed to offer a stable voltage reference with a wide operating current range, making it suitable for various applications such as digital voltmeters, power supplies, and op-amp circuitry.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Programmable Output Voltage | - | 2.5 V to 36 V | V |
| Voltage Reference Tolerance | - | ±0.4% (Typ @ 25°C) | % |
| Dynamic Output Impedance | - | 0.22 Ω (Typ) | Ω |
| Sink Current Capability | - | 1.0 mA to 100 mA | mA |
| Equivalent Full-Range Temperature Coefficient | - | 50 ppm/°C (Typ) | ppm/°C |
| Cathode to Anode Voltage | VKA | 37 V | V |
| Operating Junction Temperature | TJ | 150 °C | °C |
| Operating Ambient Temperature Range | TA | 0 to 70 °C | °C |
Key Features
- Programmable Output Voltage to 36 V
- Voltage Reference Tolerance: ±0.4%, Typ @ 25°C
- Low Dynamic Output Impedance, 0.22 Ω Typical
- Sink Current Capability of 1.0 mA to 100 mA
- Equivalent Full-Range Temperature Coefficient of 50 ppm/°C Typical
- Temperature Compensated for Operation over Full Rated Operating Temperature Range
- Low Output Noise Voltage
- Pb-Free Packages are Available
Applications
The TL431BCLPRM is versatile and can be used in various applications, including:
- Digital Voltmeters
- Power Supplies
- Op-Amp Circuitry
- Feedback Control for Driving Optocouplers in Power Supplies
- Voltage Monitors
- Constant Current Sources and Sinks
- Series Pass Regulators
Q & A
- What is the programmable output voltage range of the TL431BCLPRM?
The TL431BCLPRM can be programmed to output voltages from 2.5 V to 36 V.
- What is the typical voltage reference tolerance of the TL431BCLPRM at 25°C?
The typical voltage reference tolerance is ±0.4% at 25°C.
- What is the dynamic output impedance of the TL431BCLPRM?
The dynamic output impedance is typically 0.22 Ω.
- What is the sink current capability of the TL431BCLPRM?
The sink current capability ranges from 1.0 mA to 100 mA.
- What is the equivalent full-range temperature coefficient of the TL431BCLPRM?
The equivalent full-range temperature coefficient is typically 50 ppm/°C.
- What are the operating temperature ranges for the TL431BCLPRM?
The operating ambient temperature range is 0 to 70 °C, and the operating junction temperature is up to 150 °C.
- Can the TL431BCLPRM be used as a positive or negative voltage reference?
Yes, the TL431BCLPRM can be used as either a positive or negative voltage reference.
- What types of packages are available for the TL431BCLPRM?
The TL431BCLPRM is available in TO-92 packages among others.
- Is the TL431BCLPRM Pb-free?
Yes, Pb-free packages are available for the TL431BCLPRM.
- What are some common applications of the TL431BCLPRM?
Common applications include digital voltmeters, power supplies, op-amp circuitry, and feedback control in power supplies.
