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