May 2007 FAN431/FAN431A/FAN431L Programmable Shunt Regulator Features Description The FAN431/FAN431A/FAN431L are three terminal output adjustable regulators with thermal stability over operating temperature range. The output voltage can be set any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacement for Zener Diodes in many applications • Programmable Output Voltage to 36 Volts • Low Dynamic Output Impedance 0.20 Typical • Sink Current Capability of 1.0 to 100mA • Equivalent Full-Range Temperature Coefficient of 50ppm/°C Typical • Temperature Compensated for Operation Over Full Rated Operating Temperature Range • Low Output Noise Voltage • Fast Turn-on Response © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 1 www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 2 www.fairchildsemi.com Electrical Characteristics (TA = +25°C, unless otherwise specified) Note1 TMIN = -25°C, TMAX = +85°C www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 3 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 4 www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 5 www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 6 www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 7 www.fairchildsemi.com Bulk Type © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 8 www.fairchildsemi.com TO-92 Ammo Type & Tape And Reel Type © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 9 www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.2 10 www.fairchildsemi.com