BL431

BL431 ADJUSTABLE PRECISION ZENER SHUNT REGULATOR BL431 DESCRIPTION Outline Drawing The BL431 is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors. This device has typical dynamic output impedance of 0.2 Ω . Active output circuitry TO-92 SOT23-3L provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. F E AT U R E Programmable output voltage to 36V Low dynamic output impedance 0.2Ω typical Sink current capability of 1.0mA to 100mA Equivalent full-range temperature coefficient of 50ppm/℃ typical Temperature compensated for operation over full rated operating temperature range Low output noise voltage Fast turn on response BLOCK DIAGRAM Page1 www.belling.com.cn V1.1 PIN CONNECTION BL431 ABSOLUTE MAXIMUM RATINGS Operating temperature range applies unless otherwise specified.) Characteristic Cath ode Vo ltag e Cathode Current Range (continuous) Reference Input Current Range Power Dissipation Operating Temperature Range Symbol Vka Ika IREF PD TO-92 SOT23-3 Topr Va l u e 37 -10~+150 10 770 230 0~+70 Store temperature Range Ts t g -65~+150 Unit V mA mA mW ℃ ℃ Page2 www.belling.com.cn V1.1 BL431 ELECTRICAL CHARACTERISTICS (Ta=25℃ unless otherwise specified) Parameter Refe re nc e Vo lta ge Deviatio...