Overview
The NCP431BISNT1G is a three-terminal programmable shunt regulator diode produced by onsemi. It is a direct upgrade to the industry standard TL431A and operates as a low temperature coefficient zener that can be programmed from the reference voltage (Vref) to 36 V using two external resistors. This device is ideal for applications requiring a stable voltage reference with low minimum operating current, making it suitable for secondary regulators in switch-mode power supply (SMPS) adapters with extremely low no-load consumption.
Key Specifications
| Characteristic | Typical Value | Unit |
|---|---|---|
| Reference Input Voltage (Vref) | 2.5 | V |
| Voltage Reference Tolerance | ±0.5% | % |
| Minimum Operating Current | 40 µA | µA |
| Maximum Operating Current | 100 mA | mA |
| Dynamic Output Impedance | 0.22 Ω | Ω |
| Temperature Coefficient | 50 ppm/°C | ppm/°C |
| Operating Temperature Range | -40°C to 125°C | °C |
| Package Type | SOT-23 | - |
Key Features
- Programmable output voltage from Vref to 36 V using two external resistors.
- Low minimum operating current of 40 µA, making it ideal for low no-load consumption applications.
- Low dynamic output impedance of 0.22 Ω typical.
- Temperature compensated for operation over the full rated operating temperature range.
- Equivalent full-range temperature coefficient of 50 ppm/°C typical.
- AEC-Q100 qualified and PPAP capable for automotive and other demanding applications.
Applications
- Voltage adapters and switch-mode power supplies (SMPS).
- Precision voltage references in various electronic circuits.
- Instrumentation and measurement equipment.
- Chargers and power management systems.
- Flat TVs and other consumer electronics requiring stable voltage references.
Q & A
- What is the NCP431BISNT1G?
The NCP431BISNT1G is a three-terminal programmable shunt regulator diode produced by onsemi.
- What is the typical reference input voltage (Vref) of the NCP431BISNT1G?
The typical reference input voltage (Vref) is 2.5 V.
- What is the voltage reference tolerance of the NCP431BISNT1G?
The voltage reference tolerance is ±0.5%.
- What is the minimum operating current of the NCP431BISNT1G?
The minimum operating current is 40 µA.
- What is the maximum operating current of the NCP431BISNT1G?
The maximum operating current is 100 mA.
- What is the dynamic output impedance of the NCP431BISNT1G?
The dynamic output impedance is 0.22 Ω typical.
- What is the temperature coefficient of the NCP431BISNT1G?
The temperature coefficient is 50 ppm/°C typical.
- What is the operating temperature range of the NCP431BISNT1G?
The operating temperature range is -40°C to 125°C.
- In what package type is the NCP431BISNT1G available?
The NCP431BISNT1G is available in the SOT-23 package type.
- What are some common applications of the NCP431BISNT1G?
Common applications include voltage adapters, switch-mode power supplies, precision voltage references, instrumentation, and chargers.
