TL431BILP TI Voltage Reference

The TL431B is a precision adjustable shunt voltage reference with 0.5% initial tolerance (B-grade) and 0.5mV/°C typical temperature drift. It operates over a current range of 1mA to 100mA and provides adjustable output voltage from 2.495V to 36V using two external resistors. The device features low output impedance (0.2Ω) and active output circuitry for excellent turn-on characteristics. The TL431B is available in 3-pin TO-92 package for through-hole mounting. Selection is the industry standard for voltage references and error amplifiers in power supplies. Applications include isolated feedback loops in switching power supplies (via optocoupler), precision voltage monitoring circuits, adjustable linear regulators, and constant-current sinks for LED drivers requiring high accuracy. In stock at HL Electronics – request a quote for fast delivery.