BUY AS431BZ-E1 https://www.utsource.net/itm/p/9260421.html

Description: The AS431BZ-E1 is a high precision voltage reference IC from STMicroelectronics. Features: - Output voltage: 4.31V - Operating temperature range: -40°C to +125°C - Low temperature coefficient: 0.05%/°C - High accuracy: 0.2% - Low power consumption: 0.2mA - Short-circuit protection Applications: - Battery-powered systems - Automotive applications - Industrial systems - Portable devices - Power supplies - Measurement and instrumentation (For reference only)