Datasheet

TLV431, TLV431A, TLV431B
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR
SLVS139T − JULY 1996 − REVISED JUNE 2007
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
†
− Ratio of Delta Reference Voltage
RATIO OF DELTA REFERENCE VOLTAGE
TO DELTA CATHODE VOLTAGE
vs
JUNCTION TEMPERATURE
(for TLV431 and TLV431A)
0
−0.1
−0.2
−0.3
−0.4
−0.5
−0.6
−0.7
−0.8
to Delta Cathode Voltage − mV/V
V
ref/
∆
V
KA
∆
−50 −25 0 25 50 75 100 125 150
T
J
− Junction Temperature − °C
Figure 9
I
K
= 10 mA
∆V
KA
= V
REF
to 6 V
RATIO OF DELTA REFERENCE VOLTAGE
TO DELTA CATHODE VOLTAGE
vs
JUNCTION TEMPERATURE
(for TLV431B)
−1.0
−0.9
−0.8
−0.7
−0.6
−0.5
−0.4
−0.3
−0.2
−0.1
0.0
−50 −25 0 25 50 75 100 125 150
I
K
= 10 mA
∆V
KA
= V
REF
to 6 V
Figure 9BFigure 9A
−1
0
T
J
− Junction Temperature − °C
− Ratio of Delta Reference Voltage
to Delta Cathode Voltage − mV/V
V
ref/
∆
V
KA
∆
−0.025
−0.075
−0.1
−0.125
Percentage Change in Vref − %
0.025
PERCENTAGE CHANGE IN V
REF
vs
OPERATING LIFE AT 55°C
0
−0.05
0102030405060
I
K
= 1 mA
V
ref
Operating Life at 55°C − kh
‡
% Change (3δ)
% Change (−3δ)
% Change (avg)
‡
Extrapolated from life-test data taken at 125°C; the activation energy assumed is 0.7 eV.
Figure 10
†
Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.