Preliminary Datasheet
LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATOR AS431I
Electrical Characteristics (Continued)
R1
VIN
VKA
IKA
VREF
Figure 4. Test Circuit 4 for VKA=VREF
R3
VIN
R1
IREF
R2
VREF
VKA
IKA
VKA=VREF(1+R1/R2)+ IREF*R1
Figure 5. Test Circuit 5 for VKA﹥VREF
Feb. 2009 Rev. 1. 1
Figure 6. Test Circuit 6 for IOFF
BCD Semiconductor Manufacturing Limited
6