DESCRIPTION

The TL431/TL431A/TL431B series precision adjustable three terminal shunt voltage regulators are pin-to-pin compatible with the industry standard TL431. The output voltage of this reference is programmable by using two external resistors from 2.5V to 36V. These devices offer low output impedance for improved load regulation.

KEY FEATURES

■ INITIAL VOLTAGE REFERENCE

ACCURACY OF 0.4 (TL431B)

■ SINK CURRENT CAPABILITY 1mA

to 100mA

■ TYPICAL OUTPUT DYNAMIC

IMPEDANCE LESS THAN 200mΩ;

TYPICAL OUTPUT IMPEDANCE OF

THE TL431B LESS THAN 100mΩ

■ ADJUSTABLE OUTPUT VOLTAGE

FROM 2.5V TO 36V

■ AVAILABLE IN SURFACE-MOUNT PACKAGES

■ LOW OUTPUT NOISE

■ TYPICAL EQUIVALENT FULL

RANGE TEMPERATURE

COEFFICIENT OF 30ppm/°C

■ DIRECT PIN-TO-PIN

REPLACEMENT FOR INDUSTRY

STANDARD TL431 AND TL1431