May 2007 KA431/KA431A/KA431L Programmable Shunt Regulator Features Description • Programmable Output Voltage to 36 Volts The KA431/KA431A/KA431L are three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors These devices have a typical dynamic output impedance of 0.2W active output circuitry provides a very sharp turn on characteristic, making these devices excellent replacement for zener diodes in many applications. • 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. 1.0.8 1 www.fairchildsemi.com www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 2 Electrical Characteristics (TA = +25°C, unless otherwise specified) Note1 TMIN = -25°C, TMAX = +85°C © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 3 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 4 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 5 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 6 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 7 Bulk Type © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 8 TO-92 Ammo Type & Tape And Reel Type © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com Device Number Rev. 1.0.8 9 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 10 www.fairchildsemi.com © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 11 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 12 © 2007 Fairchild Semiconductor Corporation Device Number Rev. 1.0.8 www.fairchildsemi.com 13