DESCRIPTIOON

The AP431 is a low voltage three terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 2.5 V) to 18V with two external resistors (see application circuit). This device has a typical output impedance of 0.2 Ω . Active output circuitry provides a very sharp turn on characteristic, making this device excel lent replacement for Zener diodes in many applications.

FEATURES

■ Low Voltage Operation (2.5V)

■ Adjustable Output Voltage V0 =VREF to 18V

■ Wide Operating Current Range 0.4mA

to 100mA

■ Low Dynamic Output Impedance 0.5Ω max.

■ ESD Rating is 5.5KV(Per MIL-STD-883D).

■ Halogen Free Product

APPLICATIONS

■ Linear Regulators

■ Adjustable Supplies

■ Switching Power Supplies

■ Battery Operated Computers

■ Instrumentation

■ Computer Disk Drives