Overview
The NCP431BVSNT1G 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 an upgrade to the industry standard TL431A and is known for its low minimum operating current, making it ideal for applications requiring low power consumption, such as secondary regulators in SMPS adapters.
Key Specifications
| Characteristic | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Reference Input Voltage (Vref) | V | 2.475 | 2.500 | 2.525 |
| Reference Input Voltage Deviation Over Temperature Range | mV | - | - | 10 |
| Minimum Operating Current | µA | - | 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: ±0.5%, Typ @ 25°C.
- Low Dynamic Output Impedance: 0.22 Ω, Typical.
- 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 Supplies
- Precision Voltage Reference
- Chargers
- Instrumentation
- Flat TVs
- Digital Voltmeters
- Op Amp Circuitry
Q & A
- What is the NCP431BVSNT1G used for?
The NCP431BVSNT1G is used as a programmable shunt regulator diode, providing a stable voltage reference in various applications such as voltage adapters, switching power supplies, and instrumentation.
- What is the programmable output voltage range of the NCP431BVSNT1G?
The output voltage of the NCP431BVSNT1G can be programmed from the reference voltage (Vref) to 36 V using two external resistors.
- What is the minimum operating current of the NCP431BVSNT1G?
The minimum operating current of the NCP431BVSNT1G is 40 µA, typical at 25°C.
- What is the voltage reference tolerance of the NCP431BVSNT1G?
The voltage reference tolerance of the NCP431BVSNT1G is ±0.5%, typical at 25°C.
- What is the dynamic output impedance of the NCP431BVSNT1G?
The dynamic output impedance of the NCP431BVSNT1G is 0.22 Ω, typical.
- What is the operating temperature range of the NCP431BVSNT1G?
The operating temperature range of the NCP431BVSNT1G is -40°C to 125°C.
- Is the NCP431BVSNT1G AEC-Q100 qualified?
- What package types are available for the NCP431BVSNT1G?
The NCP431BVSNT1G is available in the SOT-23 (TO-236) package type.
- What are some typical applications of the NCP431BVSNT1G?
Typical applications include voltage adapters, switching power supplies, precision voltage references, chargers, instrumentation, and flat TVs.
- How does the NCP431BVSNT1G compare to the TL431A?
The NCP431BVSNT1G is an upgrade to the industry standard TL431A, offering improved specifications such as lower minimum operating current and better temperature compensation.
