Overview
The NCV431ASNT1G is a precision low voltage shunt regulator from ON Semiconductor. It belongs to the TLV431 series, which is known for its programmable output voltage range of 1.24 V to 16 V. This device is particularly notable for its high reference accuracy and low dynamic impedance, making it an excellent replacement for zener diodes in various applications. The NCV431ASNT1G features a guaranteed reference accuracy of ±0.5% at 25°C and ±1.0% over the industrial temperature range of -40°C to 125°C. It is available in a TSOP-5 package, offering a compact and efficient solution for voltage regulation needs.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Reference Voltage | Vref | 1.228 | 1.240 | 1.252 | V |
| Cathode to Anode Voltage | VKA | - | - | 16 | V |
| Cathode Current Range | IK | 0.1 | - | 20 | mA |
| Reference Input Current Range | Iref | 0.05 | - | 10 | mA |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Thermal Resistance, Junction-to-Ambient | RJA | - | - | 226 | °C/W |
Key Features
- Programmable output voltage range of 1.24 V to 16 V
- High reference accuracy: ±0.5% at 25°C and ±1.0% over the industrial temperature range
- Low dynamic impedance of 0.20 Ω over an operating current range of 0.1 mA to 20 mA
- Sharp low current turn-on characteristic
- Available in TSOP-5 and SOT-23-3 packages
- Pb-free package available
- ESD protection and latch-up protection
Applications
- Adjustable voltage or current linear and switching power supplies
- Voltage monitoring
- Current source and sink circuits
- Analog and digital circuits requiring precision references
- Low voltage zener diode replacements
- Power supplies, including isolated output line powered switching power supplies
- Smart phone chargers and adapters
Q & A
- What is the reference voltage range of the NCV431ASNT1G?
The reference voltage range is 1.24 V to 16 V.
- What is the reference accuracy of the NCV431ASNT1G at 25°C?
The reference accuracy is ±0.5% at 25°C.
- What is the operating ambient temperature range of the NCV431ASNT1G?
The operating ambient temperature range is -40°C to 125°C.
- What types of packages are available for the NCV431ASNT1G?
The device is available in TSOP-5 and SOT-23-3 packages.
- Does the NCV431ASNT1G have ESD protection?
- What are some common applications of the NCV431ASNT1G?
- What is the thermal resistance, junction-to-ambient, for the TSOP-5 package?
The thermal resistance, junction-to-ambient, is 226 °C/W for the TSOP-5 package.
- Can the NCV431ASNT1G be used in isolated output line powered switching power supplies?
- Is the NCV431ASNT1G available in Pb-free packages?
- What is the dynamic impedance of the NCV431ASNT1G over its operating current range?
