Overview
The NCP431AVSNT1G is a three-terminal programmable shunt regulator diode produced by onsemi. It is a monolithic IC voltage reference that operates as a low temperature coefficient zener, programmable from the reference voltage (Vref) to 36 V using two external resistors. This device is a direct upgrade to the industry standard TL431A and is known for its low minimum operating current, making it ideal for secondary regulators in SMPS adapters with extremely low no-load consumption.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Reference Input Voltage (Vref) | V | 2.475 | 2.5 | 2.525 |
| Reference Input Voltage Deviation Over Temperature Range | mV | - | - | 15 |
| Minimum Operating Current | µA | 40 | 40 | - |
| Sink Current Capability | mA | 0.04 | - | 100 |
| Dynamic Output Impedance | Ω | - | 0.22 | - |
| Temperature Coefficient | ppm/°C | - | 50 | - |
| Operating Temperature Range | °C | -40 | - | 125 |
| Package Type | - | - | SOT-23 (TO-236) | - |
Key Features
- Programmable Output Voltage to 36 V using two external resistors.
- Low Minimum Operating Current: 40 µA, Typ @ 25°C.
- Voltage Reference Tolerance: ±1%, Typ @ 25°C.
- Low Dynamic Output Impedance: 0.22 Ω, Typical.
- Sink Current Capability of 40 µA to 100 mA.
- Temperature Compensated for Operation over 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 applications requiring unique site and control change requirements.
Applications
- Voltage Adapters.
- Switching Power Supply.
- Precision Voltage Reference.
- Chargers.
- Instrumentation.
- Digital Voltmeters.
- Op Amp Circuitry.
- Flat TVs).
Q & A
- What is the NCP431AVSNT1G?
The NCP431AVSNT1G is a three-terminal programmable shunt regulator diode produced by onsemi, operating as a low temperature coefficient zener).
- What is the programmable output voltage range of the NCP431AVSNT1G?
The output voltage can be programmed from the reference voltage (Vref) to 36 V using two external resistors).
- What is the minimum operating current of the NCP431AVSNT1G?
The minimum operating current is 40 µA, Typical at 25°C).
- What is the voltage reference tolerance of the NCP431AVSNT1G?
The voltage reference tolerance is ±1%, Typical at 25°C).
- What is the dynamic output impedance of the NCP431AVSNT1G?
The dynamic output impedance is 0.22 Ω, Typical).
- What is the temperature coefficient of the NCP431AVSNT1G?
The equivalent full-range temperature coefficient is 50 ppm/°C, Typical).
- What are the typical applications of the NCP431AVSNT1G?
Typical applications include voltage adapters, switching power supplies, precision voltage references, chargers, instrumentation, and more).
- Is the NCP431AVSNT1G suitable for automotive applications?
Yes, it is AEC-Q100 Qualified and PPAP Capable, making it suitable for automotive and other applications requiring unique site and control change requirements).
- What package types are available for the NCP431AVSNT1G?
The NCP431AVSNT1G is available in the SOT-23 (TO-236) package type).
- What is the operating temperature range of the NCP431AVSNT1G?
The operating temperature range is from -40°C to 125°C).
